TY  - CONF
AU  - Stevanović, Gordana
AU  - Jović-Jovičić, Nataša
AU  - Popović, Aleksandar
AU  - Dojčinović, Biljana
AU  - Milovanović, Biljana
AU  - Šalipur, Hristina
AU  - Ajduković, Marija
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6276
AB  - Catalytic degradation of Tartrazine in the presence of Oxone® activated by Co-supported chitosan derived carbon-montmorillonite as catalyst was investigated. The catalyst was synthetized using
impregnation-carbonization method. The carbonization temperature was 500 °C. The catalytic
experiments were performed at different temperatures in range from 25 °C to 40 °C in order to
determinate kinetics parameters. The kinetics data showed best fit with the first-order kinetics model. The activation energy of the investigated degradation process was calculated according to the Arrhenius equation.
PB  - Society of Physical Chemists of Serbia
C3  - Proceedings - 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2022, September 26-30, 2022, Belgrade, Serbia
T1  - Kinetic and thermodynamic study of the oxidative catalytic degradation of tartrazine in the presence of oxone® and cobalt supported chitosan-derived carbon-montmorillonite
VL  - I
SP  - 137
EP  - 140
UR  - https://hdl.handle.net/21.15107/rcub_cer_6276
ER  - 

@conference{
author = "Stevanović, Gordana and Jović-Jovičić, Nataša and Popović, Aleksandar and Dojčinović, Biljana and Milovanović, Biljana and Šalipur, Hristina and Ajduković, Marija",
year = "2022",
abstract = "Catalytic degradation of Tartrazine in the presence of Oxone® activated by Co-supported chitosan derived carbon-montmorillonite as catalyst was investigated. The catalyst was synthetized using
impregnation-carbonization method. The carbonization temperature was 500 °C. The catalytic
experiments were performed at different temperatures in range from 25 °C to 40 °C in order to
determinate kinetics parameters. The kinetics data showed best fit with the first-order kinetics model. The activation energy of the investigated degradation process was calculated according to the Arrhenius equation.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Proceedings - 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2022, September 26-30, 2022, Belgrade, Serbia",
title = "Kinetic and thermodynamic study of the oxidative catalytic degradation of tartrazine in the presence of oxone® and cobalt supported chitosan-derived carbon-montmorillonite",
volume = "I",
pages = "137-140",
url = "https://hdl.handle.net/21.15107/rcub_cer_6276"
}

Stevanović, G., Jović-Jovičić, N., Popović, A., Dojčinović, B., Milovanović, B., Šalipur, H.,& Ajduković, M.. (2022). Kinetic and thermodynamic study of the oxidative catalytic degradation of tartrazine in the presence of oxone® and cobalt supported chitosan-derived carbon-montmorillonite. in Proceedings - 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2022, September 26-30, 2022, Belgrade, Serbia
Society of Physical Chemists of Serbia., I, 137-140.
https://hdl.handle.net/21.15107/rcub_cer_6276

Stevanović G, Jović-Jovičić N, Popović A, Dojčinović B, Milovanović B, Šalipur H, Ajduković M. Kinetic and thermodynamic study of the oxidative catalytic degradation of tartrazine in the presence of oxone® and cobalt supported chitosan-derived carbon-montmorillonite. in Proceedings - 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2022, September 26-30, 2022, Belgrade, Serbia. 2022;I:137-140.
https://hdl.handle.net/21.15107/rcub_cer_6276 .

Stevanović, Gordana, Jović-Jovičić, Nataša, Popović, Aleksandar, Dojčinović, Biljana, Milovanović, Biljana, Šalipur, Hristina, Ajduković, Marija, "Kinetic and thermodynamic study of the oxidative catalytic degradation of tartrazine in the presence of oxone® and cobalt supported chitosan-derived carbon-montmorillonite" in Proceedings - 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2022, September 26-30, 2022, Belgrade, Serbia, I (2022):137-140,
https://hdl.handle.net/21.15107/rcub_cer_6276 .

TY  - JOUR
AU  - Mudrinić, Tihana
AU  - Petrović, Srđan
AU  - Krstić, Jugoslav
AU  - Milovanović, Biljana
AU  - Pavlović, Stefan
AU  - Banković, Predrag
AU  - Milutinović Nikolić, Aleksandra
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5308
AB  - The main goals of this study are: i) employ the electrochemical methods as alternative methods for alumina-supported cobalt (Co-A) surface characterization; ii) investigate the electro-catalytic activity of different cobalt phases toward glucose, and iii) implement the mechanochemical approach for the synthesis of the fourth generation of glucose sensing materials. Co3O4 and alumina were either manual grinded (Co3O4-A) or ball-milled (CoAl2O4-A) with different amounts of cobalt in CoAl2O4-A. The final products were characterized by XRF, LDPSA, XRD and TPR. The electrodes were prepared in the form of the carbon paste electrode and tested in supporting electrolyte (1 M NaOH) as well as in a glucose-containing solution. The CV, EIS, and chronoamperometry were used for electrochemical measurements. TPR revealed the formation of CoAl2O4 during the ball milling process. Different cobalt phases significantly affected the electrochemical responses. Higher activity of CoAl2O4-A toward glucose oxidation in comparison with Co3O4-A was ascribed to tetrahedral Co2+ ion acting as the active site in glucose oxidation. In addition, results convinced employing the scarcely employed mechanochemical synthesis protocols for obtaining glucose-sensing materials. Finally, it was proven that electrochemical techniques can be harnessed as alternative, new, powerful methods for Co-A surface characterization.
PB  - Elsevier
T2  - Surfaces and Interfaces
T1  - Electrochemical approach to the surface characterization of mechanochemically synthesized alumina-supported cobalt applicable in glucose sensing
IS  - 102356
DO  - 10.1016/j.surfin.2022.102356
ER  - 

@article{
author = "Mudrinić, Tihana and Petrović, Srđan and Krstić, Jugoslav and Milovanović, Biljana and Pavlović, Stefan and Banković, Predrag and Milutinović Nikolić, Aleksandra",
year = "2022",
abstract = "The main goals of this study are: i) employ the electrochemical methods as alternative methods for alumina-supported cobalt (Co-A) surface characterization; ii) investigate the electro-catalytic activity of different cobalt phases toward glucose, and iii) implement the mechanochemical approach for the synthesis of the fourth generation of glucose sensing materials. Co3O4 and alumina were either manual grinded (Co3O4-A) or ball-milled (CoAl2O4-A) with different amounts of cobalt in CoAl2O4-A. The final products were characterized by XRF, LDPSA, XRD and TPR. The electrodes were prepared in the form of the carbon paste electrode and tested in supporting electrolyte (1 M NaOH) as well as in a glucose-containing solution. The CV, EIS, and chronoamperometry were used for electrochemical measurements. TPR revealed the formation of CoAl2O4 during the ball milling process. Different cobalt phases significantly affected the electrochemical responses. Higher activity of CoAl2O4-A toward glucose oxidation in comparison with Co3O4-A was ascribed to tetrahedral Co2+ ion acting as the active site in glucose oxidation. In addition, results convinced employing the scarcely employed mechanochemical synthesis protocols for obtaining glucose-sensing materials. Finally, it was proven that electrochemical techniques can be harnessed as alternative, new, powerful methods for Co-A surface characterization.",
publisher = "Elsevier",
journal = "Surfaces and Interfaces",
title = "Electrochemical approach to the surface characterization of mechanochemically synthesized alumina-supported cobalt applicable in glucose sensing",
number = "102356",
doi = "10.1016/j.surfin.2022.102356"
}

Mudrinić, T., Petrović, S., Krstić, J., Milovanović, B., Pavlović, S., Banković, P.,& Milutinović Nikolić, A.. (2022). Electrochemical approach to the surface characterization of mechanochemically synthesized alumina-supported cobalt applicable in glucose sensing. in Surfaces and Interfaces
Elsevier.(102356).
https://doi.org/10.1016/j.surfin.2022.102356

Mudrinić T, Petrović S, Krstić J, Milovanović B, Pavlović S, Banković P, Milutinović Nikolić A. Electrochemical approach to the surface characterization of mechanochemically synthesized alumina-supported cobalt applicable in glucose sensing. in Surfaces and Interfaces. 2022;(102356).
doi:10.1016/j.surfin.2022.102356 .

Mudrinić, Tihana, Petrović, Srđan, Krstić, Jugoslav, Milovanović, Biljana, Pavlović, Stefan, Banković, Predrag, Milutinović Nikolić, Aleksandra, "Electrochemical approach to the surface characterization of mechanochemically synthesized alumina-supported cobalt applicable in glucose sensing" in Surfaces and Interfaces, no. 102356 (2022),
https://doi.org/10.1016/j.surfin.2022.102356 . .

TY  - JOUR
AU  - Mudrinić, Tihana
AU  - Petrović, Srđan
AU  - Krstić, Jugoslav
AU  - Milovanović, Biljana
AU  - Pavlović, Stefan
AU  - Banković, Predrag
AU  - Milutinović Nikolić, Aleksandra
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5616
AB  - The main goals of this study are: i) employ the electrochemical methods as alternative methods for alumina-supported cobalt (Co-A) surface characterization; ii) investigate the electro-catalytic activity of different cobalt phases toward glucose, and iii) implement the mechanochemical approach for the synthesis of the fourth generation of glucose sensing materials. Co3O4 and alumina were either manual grinded (Co3O4-A) or ball-milled (CoAl2O4-A) with different amounts of cobalt in CoAl2O4-A. The final products were characterized by XRF, LDPSA, XRD and TPR. The electrodes were prepared in the form of the carbon paste electrode and tested in supporting electrolyte (1 M NaOH) as well as in a glucose-containing solution. The CV, EIS, and chronoamperometry were used for electrochemical measurements. TPR revealed the formation of CoAl2O4 during the ball milling process. Different cobalt phases significantly affected the electrochemical responses. Higher activity of CoAl2O4-A toward glucose oxidation in comparison with Co3O4-A was ascribed to tetrahedral Co2+ ion acting as the active site in glucose oxidation. In addition, results convinced employing the scarcely employed mechanochemical synthesis protocols for obtaining glucose-sensing materials. Finally, it was proven that electrochemical techniques can be harnessed as alternative, new, powerful methods for Co-A surface characterization.
PB  - Elsevier
T2  - Surfaces and Interfaces
T1  - Electrochemical approach to the surface characterization of mechanochemically synthesized alumina-supported cobalt applicable in glucose sensing
IS  - 102356
DO  - 10.1016/j.surfin.2022.102356
ER  - 

@article{
author = "Mudrinić, Tihana and Petrović, Srđan and Krstić, Jugoslav and Milovanović, Biljana and Pavlović, Stefan and Banković, Predrag and Milutinović Nikolić, Aleksandra",
year = "2022",
abstract = "The main goals of this study are: i) employ the electrochemical methods as alternative methods for alumina-supported cobalt (Co-A) surface characterization; ii) investigate the electro-catalytic activity of different cobalt phases toward glucose, and iii) implement the mechanochemical approach for the synthesis of the fourth generation of glucose sensing materials. Co3O4 and alumina were either manual grinded (Co3O4-A) or ball-milled (CoAl2O4-A) with different amounts of cobalt in CoAl2O4-A. The final products were characterized by XRF, LDPSA, XRD and TPR. The electrodes were prepared in the form of the carbon paste electrode and tested in supporting electrolyte (1 M NaOH) as well as in a glucose-containing solution. The CV, EIS, and chronoamperometry were used for electrochemical measurements. TPR revealed the formation of CoAl2O4 during the ball milling process. Different cobalt phases significantly affected the electrochemical responses. Higher activity of CoAl2O4-A toward glucose oxidation in comparison with Co3O4-A was ascribed to tetrahedral Co2+ ion acting as the active site in glucose oxidation. In addition, results convinced employing the scarcely employed mechanochemical synthesis protocols for obtaining glucose-sensing materials. Finally, it was proven that electrochemical techniques can be harnessed as alternative, new, powerful methods for Co-A surface characterization.",
publisher = "Elsevier",
journal = "Surfaces and Interfaces",
title = "Electrochemical approach to the surface characterization of mechanochemically synthesized alumina-supported cobalt applicable in glucose sensing",
number = "102356",
doi = "10.1016/j.surfin.2022.102356"
}

Mudrinić, T., Petrović, S., Krstić, J., Milovanović, B., Pavlović, S., Banković, P.,& Milutinović Nikolić, A.. (2022). Electrochemical approach to the surface characterization of mechanochemically synthesized alumina-supported cobalt applicable in glucose sensing. in Surfaces and Interfaces
Elsevier.(102356).
https://doi.org/10.1016/j.surfin.2022.102356

Mudrinić T, Petrović S, Krstić J, Milovanović B, Pavlović S, Banković P, Milutinović Nikolić A. Electrochemical approach to the surface characterization of mechanochemically synthesized alumina-supported cobalt applicable in glucose sensing. in Surfaces and Interfaces. 2022;(102356).
doi:10.1016/j.surfin.2022.102356 .

Mudrinić, Tihana, Petrović, Srđan, Krstić, Jugoslav, Milovanović, Biljana, Pavlović, Stefan, Banković, Predrag, Milutinović Nikolić, Aleksandra, "Electrochemical approach to the surface characterization of mechanochemically synthesized alumina-supported cobalt applicable in glucose sensing" in Surfaces and Interfaces, no. 102356 (2022),
https://doi.org/10.1016/j.surfin.2022.102356 . .

TY  - CONF
AU  - Mudrinić, Tihana
AU  - Milovanović, Biljana
AU  - Marinović, Sanja
AU  - Petrović, Srđan
AU  - Krstić, Jugoslav
AU  - Banković, Predrag
AU  - Milutinović Nikolić, Aleksandra
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6359
AB  - In recent years, mineral oxides (i.e. zeolite, alumina and clay minerals)-supported non-precious transition metals have extensively studied as highly promising sustainable and green glucose-sensing materials (Mudrinić, 2019). The reason for that is their low cost, easiness of synthesis, low negative environmental impact, and desirable electrochemical properties toward glucose oxidation. 
It is widely accepted that the catalytic activity of the mineral oxides-supported cobalt is strongly influenced by cobalt-mineral oxide interaction. As a consequence of this interaction different cobalt oxides (Wang, 1991) could be formed: Co3O4-contains both cobalt ions in tetrahedral (Co2+Td) and octahedral (Co3+Oh) coordination and CoAl2O4-contains only Co2+Td. However, little is known about the catalytic activity of these cobalt oxides (i.e. cobalt ions) in the reaction of the electro-oxidation of glucose. 
In this work, cobalt oxides in both tetrahedral (Co2+Td) and octahedral (Co3+Oh) coordination and with only Co2+Td were synthesized on aluminum pillared clay (AP) and alumina (A). The obtained materials were characterized by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and temperature-programmed reduction (TPR). Electrochemical measurements were performed in alkaline solution with and without glucose using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and chronoamperometry (CA). TPR and XPS along with the results of electrochemical measurements in alkaline solutions without glucose confirmed the successful synthesis of the different cobalt oxides on both AP and A. The electrochemical measurements in glucose-containing solutions showed the enhanced electrocatalytic activity of AP and A with Co2+Td in comparison to their counterparts with both Co2+Td and Co3+Oh.  This result suggested that the Co2+Td acted as the main active site for the glucose oxidation.
PB  - The clay mineral society
C3  - Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey
T1  - Electrocatalytic activity of different cobalt oxides supported on mineral oxides toward glucose oxidation
SP  - 331
EP  - 331
UR  - https://hdl.handle.net/21.15107/rcub_cer_6359
ER  - 

@conference{
author = "Mudrinić, Tihana and Milovanović, Biljana and Marinović, Sanja and Petrović, Srđan and Krstić, Jugoslav and Banković, Predrag and Milutinović Nikolić, Aleksandra",
year = "2022",
abstract = "In recent years, mineral oxides (i.e. zeolite, alumina and clay minerals)-supported non-precious transition metals have extensively studied as highly promising sustainable and green glucose-sensing materials (Mudrinić, 2019). The reason for that is their low cost, easiness of synthesis, low negative environmental impact, and desirable electrochemical properties toward glucose oxidation. 
It is widely accepted that the catalytic activity of the mineral oxides-supported cobalt is strongly influenced by cobalt-mineral oxide interaction. As a consequence of this interaction different cobalt oxides (Wang, 1991) could be formed: Co3O4-contains both cobalt ions in tetrahedral (Co2+Td) and octahedral (Co3+Oh) coordination and CoAl2O4-contains only Co2+Td. However, little is known about the catalytic activity of these cobalt oxides (i.e. cobalt ions) in the reaction of the electro-oxidation of glucose. 
In this work, cobalt oxides in both tetrahedral (Co2+Td) and octahedral (Co3+Oh) coordination and with only Co2+Td were synthesized on aluminum pillared clay (AP) and alumina (A). The obtained materials were characterized by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and temperature-programmed reduction (TPR). Electrochemical measurements were performed in alkaline solution with and without glucose using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and chronoamperometry (CA). TPR and XPS along with the results of electrochemical measurements in alkaline solutions without glucose confirmed the successful synthesis of the different cobalt oxides on both AP and A. The electrochemical measurements in glucose-containing solutions showed the enhanced electrocatalytic activity of AP and A with Co2+Td in comparison to their counterparts with both Co2+Td and Co3+Oh.  This result suggested that the Co2+Td acted as the main active site for the glucose oxidation.",
publisher = "The clay mineral society",
journal = "Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey",
title = "Electrocatalytic activity of different cobalt oxides supported on mineral oxides toward glucose oxidation",
pages = "331-331",
url = "https://hdl.handle.net/21.15107/rcub_cer_6359"
}

Mudrinić, T., Milovanović, B., Marinović, S., Petrović, S., Krstić, J., Banković, P.,& Milutinović Nikolić, A.. (2022). Electrocatalytic activity of different cobalt oxides supported on mineral oxides toward glucose oxidation. in Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey
The clay mineral society., 331-331.
https://hdl.handle.net/21.15107/rcub_cer_6359

Mudrinić T, Milovanović B, Marinović S, Petrović S, Krstić J, Banković P, Milutinović Nikolić A. Electrocatalytic activity of different cobalt oxides supported on mineral oxides toward glucose oxidation. in Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey. 2022;:331-331.
https://hdl.handle.net/21.15107/rcub_cer_6359 .

Mudrinić, Tihana, Milovanović, Biljana, Marinović, Sanja, Petrović, Srđan, Krstić, Jugoslav, Banković, Predrag, Milutinović Nikolić, Aleksandra, "Electrocatalytic activity of different cobalt oxides supported on mineral oxides toward glucose oxidation" in Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey (2022):331-331,
https://hdl.handle.net/21.15107/rcub_cer_6359 .

TY  - CONF
AU  - Milovanović, Biljana
AU  - Petrović, Rada
AU  - Marinović, Sanja
AU  - Milutinović Nikolić, Aleksandra
AU  - Banković, Predrag
AU  - Mudrinić, Tihana
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6360
AB  - Aluminum pillared montmorillonite-supported cobalt (Co/AP) has proven to be a suitable non-enzymatic
sensing material (Mudrinić, 2019). Beside low cost, Co/AP exhibited adequate electrocatalytic performance
toward glucose. However, further improvements of electrocatalytic performances are needed, especially
regarding increasing sensitivity and widening the linear range of glucose detection.
In this regard, in addition to the monometallic cobalt oxide catalyst, a series of bimetallic catalysts
supported on AP (Co+Cu/AP, Co+Zn/AP, Co+Fe/AP, and Co+Ni/AP) have been synthesized by the
incipient wetness impregnation method (Pinna, 1998). The total amount of supported metal was fixed at 4
mass%, while cobalt:dopant molar ratio was 9:1 for all samples. The synthesized materials were prepared
in the form of carbon paste electrode (Co+dopant/AP-CPE) with the same mass ratio of Co+dopant/AP to
carbon black (CB) and applied as a working electrode.
All the electrochemical measurements of each Co+dopant/AP-CPE were conducted using an Autolab
PGSTAT302N potentiostat with Nova 2.1 software. The experiments were carried out in a three-electrode
cell with prepared electrodes as working, Ag/AgCl (3 M KCl) as a reference electrode, and platinum rod
as a counter electrode. Electrochemical behavior of the working electrodes for glucose detection was
studied by the cyclic voltammetry and chronoamperometry in alkaline solution, with and without glucose.
Among investigated electrodes for glucose electrooxidation, the Co+Fe/AP-CPE exhibited the highest
current response with the best sensitivity. These very first results indicated a vital role of Fe in enhancing
the glucose-sensing performance of aluminum pillared montmorillonite-supported cobalt. The physical
chemical characterization of all Co+dopant/AP materials is ongoing.
PB  - The clay mineral society
C3  - Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey
T1  - Electrocatalytic behavior of pillared montmorillonite-supported cobalt oxide doped with Cu, Zn, Fe, and Ni for glucose sensing
SP  - 330
EP  - 330
UR  - https://hdl.handle.net/21.15107/rcub_cer_6360
ER  - 

@conference{
author = "Milovanović, Biljana and Petrović, Rada and Marinović, Sanja and Milutinović Nikolić, Aleksandra and Banković, Predrag and Mudrinić, Tihana",
year = "2022",
abstract = "Aluminum pillared montmorillonite-supported cobalt (Co/AP) has proven to be a suitable non-enzymatic
sensing material (Mudrinić, 2019). Beside low cost, Co/AP exhibited adequate electrocatalytic performance
toward glucose. However, further improvements of electrocatalytic performances are needed, especially
regarding increasing sensitivity and widening the linear range of glucose detection.
In this regard, in addition to the monometallic cobalt oxide catalyst, a series of bimetallic catalysts
supported on AP (Co+Cu/AP, Co+Zn/AP, Co+Fe/AP, and Co+Ni/AP) have been synthesized by the
incipient wetness impregnation method (Pinna, 1998). The total amount of supported metal was fixed at 4
mass%, while cobalt:dopant molar ratio was 9:1 for all samples. The synthesized materials were prepared
in the form of carbon paste electrode (Co+dopant/AP-CPE) with the same mass ratio of Co+dopant/AP to
carbon black (CB) and applied as a working electrode.
All the electrochemical measurements of each Co+dopant/AP-CPE were conducted using an Autolab
PGSTAT302N potentiostat with Nova 2.1 software. The experiments were carried out in a three-electrode
cell with prepared electrodes as working, Ag/AgCl (3 M KCl) as a reference electrode, and platinum rod
as a counter electrode. Electrochemical behavior of the working electrodes for glucose detection was
studied by the cyclic voltammetry and chronoamperometry in alkaline solution, with and without glucose.
Among investigated electrodes for glucose electrooxidation, the Co+Fe/AP-CPE exhibited the highest
current response with the best sensitivity. These very first results indicated a vital role of Fe in enhancing
the glucose-sensing performance of aluminum pillared montmorillonite-supported cobalt. The physical
chemical characterization of all Co+dopant/AP materials is ongoing.",
publisher = "The clay mineral society",
journal = "Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey",
title = "Electrocatalytic behavior of pillared montmorillonite-supported cobalt oxide doped with Cu, Zn, Fe, and Ni for glucose sensing",
pages = "330-330",
url = "https://hdl.handle.net/21.15107/rcub_cer_6360"
}

Milovanović, B., Petrović, R., Marinović, S., Milutinović Nikolić, A., Banković, P.,& Mudrinić, T.. (2022). Electrocatalytic behavior of pillared montmorillonite-supported cobalt oxide doped with Cu, Zn, Fe, and Ni for glucose sensing. in Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey
The clay mineral society., 330-330.
https://hdl.handle.net/21.15107/rcub_cer_6360

Milovanović B, Petrović R, Marinović S, Milutinović Nikolić A, Banković P, Mudrinić T. Electrocatalytic behavior of pillared montmorillonite-supported cobalt oxide doped with Cu, Zn, Fe, and Ni for glucose sensing. in Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey. 2022;:330-330.
https://hdl.handle.net/21.15107/rcub_cer_6360 .

Milovanović, Biljana, Petrović, Rada, Marinović, Sanja, Milutinović Nikolić, Aleksandra, Banković, Predrag, Mudrinić, Tihana, "Electrocatalytic behavior of pillared montmorillonite-supported cobalt oxide doped with Cu, Zn, Fe, and Ni for glucose sensing" in Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey (2022):330-330,
https://hdl.handle.net/21.15107/rcub_cer_6360 .

TY  - CONF
AU  - Marinović, Sanja
AU  - Jović-Jovičić, Nataša
AU  - Mudrinić, Tihana
AU  - Stevanović, Gordana
AU  - Milovanović, Biljana
AU  - Banković, Predrag
AU  - Ajduković, Marija
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6280
AB  - Mixed Al, Fe pillared clay (AlFePILC) was synthesized from Na-exchanged Wyoming clay
(Na-Wy) rich in montmorillonite. In the pillaring process Na-Wy was modified with a mixed
intercalating (Al, Fe) solution with molar ratio of Fe3+/(Al3++Fe3+) = 10%. The obtained
AlFePILC was impregnated with cobalt using the incipient wetness impregnation method,
dried at 110 ºC and calcined at 450 ºC (Co-AlFePILC). Co-AlFePILC was tested as a catalyst
in catalytic oxidation of tartrazine in the presence of Oxone®. Decolorization was monitored
at wavelength  =426 nm, while degradation of aryl groups was followed at  =257 nm using
UV-Vis spectroscopy. The influence of the mass of the catalyst on degradation process was followed in the mass range from 10 mg to 50 mg at 30 °C. It was found that mass increase
was beneficial for the decolorization rate. The effect of temperature was investigated from 30
ºC to 60 ºC. The decolorization was over 90% after only 10 minutes for the temperature of 60
ºC, while with the temperature decrease, the decolorization rate decreased. Co-AlFePILC was
found to be an efficient catalyst in degradation of tartrazine in the presence of Oxone®.
PB  - Serbian Ceramic Society
C3  - Program and the book of abstracts - Serbian Ceramic Society Conference – Advanced Ceramics and Application X, 26-27th September 2022, Belgrade, Serbia
T1  - Cobalt impregnated mixed Al, Fe-pillared montmorillonite as a catalyst for decolorization of tartrazine in the reaction with Oxone®
SP  - 66
EP  - 67
UR  - https://hdl.handle.net/21.15107/rcub_cer_6280
ER  - 

@conference{
author = "Marinović, Sanja and Jović-Jovičić, Nataša and Mudrinić, Tihana and Stevanović, Gordana and Milovanović, Biljana and Banković, Predrag and Ajduković, Marija",
year = "2022",
abstract = "Mixed Al, Fe pillared clay (AlFePILC) was synthesized from Na-exchanged Wyoming clay
(Na-Wy) rich in montmorillonite. In the pillaring process Na-Wy was modified with a mixed
intercalating (Al, Fe) solution with molar ratio of Fe3+/(Al3++Fe3+) = 10%. The obtained
AlFePILC was impregnated with cobalt using the incipient wetness impregnation method,
dried at 110 ºC and calcined at 450 ºC (Co-AlFePILC). Co-AlFePILC was tested as a catalyst
in catalytic oxidation of tartrazine in the presence of Oxone®. Decolorization was monitored
at wavelength  =426 nm, while degradation of aryl groups was followed at  =257 nm using
UV-Vis spectroscopy. The influence of the mass of the catalyst on degradation process was followed in the mass range from 10 mg to 50 mg at 30 °C. It was found that mass increase
was beneficial for the decolorization rate. The effect of temperature was investigated from 30
ºC to 60 ºC. The decolorization was over 90% after only 10 minutes for the temperature of 60
ºC, while with the temperature decrease, the decolorization rate decreased. Co-AlFePILC was
found to be an efficient catalyst in degradation of tartrazine in the presence of Oxone®.",
publisher = "Serbian Ceramic Society",
journal = "Program and the book of abstracts - Serbian Ceramic Society Conference – Advanced Ceramics and Application X, 26-27th September 2022, Belgrade, Serbia",
title = "Cobalt impregnated mixed Al, Fe-pillared montmorillonite as a catalyst for decolorization of tartrazine in the reaction with Oxone®",
pages = "66-67",
url = "https://hdl.handle.net/21.15107/rcub_cer_6280"
}

Marinović, S., Jović-Jovičić, N., Mudrinić, T., Stevanović, G., Milovanović, B., Banković, P.,& Ajduković, M.. (2022). Cobalt impregnated mixed Al, Fe-pillared montmorillonite as a catalyst for decolorization of tartrazine in the reaction with Oxone®. in Program and the book of abstracts - Serbian Ceramic Society Conference – Advanced Ceramics and Application X, 26-27th September 2022, Belgrade, Serbia
Serbian Ceramic Society., 66-67.
https://hdl.handle.net/21.15107/rcub_cer_6280

Marinović S, Jović-Jovičić N, Mudrinić T, Stevanović G, Milovanović B, Banković P, Ajduković M. Cobalt impregnated mixed Al, Fe-pillared montmorillonite as a catalyst for decolorization of tartrazine in the reaction with Oxone®. in Program and the book of abstracts - Serbian Ceramic Society Conference – Advanced Ceramics and Application X, 26-27th September 2022, Belgrade, Serbia. 2022;:66-67.
https://hdl.handle.net/21.15107/rcub_cer_6280 .

Marinović, Sanja, Jović-Jovičić, Nataša, Mudrinić, Tihana, Stevanović, Gordana, Milovanović, Biljana, Banković, Predrag, Ajduković, Marija, "Cobalt impregnated mixed Al, Fe-pillared montmorillonite as a catalyst for decolorization of tartrazine in the reaction with Oxone®" in Program and the book of abstracts - Serbian Ceramic Society Conference – Advanced Ceramics and Application X, 26-27th September 2022, Belgrade, Serbia (2022):66-67,
https://hdl.handle.net/21.15107/rcub_cer_6280 .

TY  - CONF
AU  - Marinović, Sanja
AU  - Mudrinić, Tihana
AU  - Milovanović, Biljana
AU  - Stevanović, Gordana
AU  - Milutinović Nikolić, Aleksandra
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6284
AB  - The 2 μm fraction of Wyoming clay rich in montmorillonite was pillared with aluminum. Obtained pillared clay was impregnated with different cobalt loadings using the incipient wetness impregnation method followed by calcination at 450 °C. The obtained materials were previously fully characterized. The synthesized materials were investigated as catalysts in catalytic oxidation of organic water pollutant, tartrazine, in the presence of Oxone®. Oxone® was a precursor of sulfate anion radicals. The effect of the different cobalt loadings on the reaction kinetics was investigated. The pseudo-first order kinetic model was found to be the most appropriate to fit the experimental data of all investigated catalysts under defined experimental conditions. The presence of Co3O4 as defined crystalline phase reduces the efficiency of cobalt-supported aluminum pillared clay in Oxone® activation and consequently oxidative tartrazine degradation.
PB  - Society of Physical Chemists of Serbia
C3  - Proceedings - 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2022, September, 26-30, 2022, Belgrade, Serbia
T1  - Effect of different cobalt loadings on the kinetic performance of cobalt-supported aluminum pillared clay towards tartrazine degradation
VL  - I
SP  - 165
EP  - 168
UR  - https://hdl.handle.net/21.15107/rcub_cer_6284
ER  - 

@conference{
author = "Marinović, Sanja and Mudrinić, Tihana and Milovanović, Biljana and Stevanović, Gordana and Milutinović Nikolić, Aleksandra",
year = "2022",
abstract = "The 2 μm fraction of Wyoming clay rich in montmorillonite was pillared with aluminum. Obtained pillared clay was impregnated with different cobalt loadings using the incipient wetness impregnation method followed by calcination at 450 °C. The obtained materials were previously fully characterized. The synthesized materials were investigated as catalysts in catalytic oxidation of organic water pollutant, tartrazine, in the presence of Oxone®. Oxone® was a precursor of sulfate anion radicals. The effect of the different cobalt loadings on the reaction kinetics was investigated. The pseudo-first order kinetic model was found to be the most appropriate to fit the experimental data of all investigated catalysts under defined experimental conditions. The presence of Co3O4 as defined crystalline phase reduces the efficiency of cobalt-supported aluminum pillared clay in Oxone® activation and consequently oxidative tartrazine degradation.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Proceedings - 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2022, September, 26-30, 2022, Belgrade, Serbia",
title = "Effect of different cobalt loadings on the kinetic performance of cobalt-supported aluminum pillared clay towards tartrazine degradation",
volume = "I",
pages = "165-168",
url = "https://hdl.handle.net/21.15107/rcub_cer_6284"
}

Marinović, S., Mudrinić, T., Milovanović, B., Stevanović, G.,& Milutinović Nikolić, A.. (2022). Effect of different cobalt loadings on the kinetic performance of cobalt-supported aluminum pillared clay towards tartrazine degradation. in Proceedings - 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2022, September, 26-30, 2022, Belgrade, Serbia
Society of Physical Chemists of Serbia., I, 165-168.
https://hdl.handle.net/21.15107/rcub_cer_6284

Marinović S, Mudrinić T, Milovanović B, Stevanović G, Milutinović Nikolić A. Effect of different cobalt loadings on the kinetic performance of cobalt-supported aluminum pillared clay towards tartrazine degradation. in Proceedings - 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2022, September, 26-30, 2022, Belgrade, Serbia. 2022;I:165-168.
https://hdl.handle.net/21.15107/rcub_cer_6284 .

Marinović, Sanja, Mudrinić, Tihana, Milovanović, Biljana, Stevanović, Gordana, Milutinović Nikolić, Aleksandra, "Effect of different cobalt loadings on the kinetic performance of cobalt-supported aluminum pillared clay towards tartrazine degradation" in Proceedings - 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2022, September, 26-30, 2022, Belgrade, Serbia, I (2022):165-168,
https://hdl.handle.net/21.15107/rcub_cer_6284 .

TY  - CONF
AU  - Milovanović, Biljana
AU  - Marinović, Sanja
AU  - Milutinović Nikolić, Aleksandra
AU  - Petrović, Rada
AU  - Stevanović, Gordana
AU  - Banković, Predrag
AU  - Mudrinić, Tihana
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6281
AB  - Our previous study demonstrated that cobalt content strongly affected the electro-activity of
aluminum pillared clay-supported cobalt (CoAP) toward glucose oxidation. It was found that
the electro-activity of CoAP increased with the increase of cobalt loading. However, at the 10
wt.% of cobalt content, the electro-activity significantly decreased. In the present study, the
focus is on the investigation of the nature of the surface sites that might cause the difference
in the electro-activity of CoAP. For this purpose, CoAP with 3 wt.% and 10 wt.% cobalt
contents (x%CoAP, x=3 and 10) were characterized using FE-SEM and HR-TEM with EDX
techniques, and XPS. The microscopic techniques coupled with EDX have shown that cobalt
oxide nanoparticles were evenly distributed in both samples. However, the higher cobalt
loading resulted in cobalt oxide agglomeration that led to larger particle sizes. The results of
XPS confirmed the presence of Co (II) in the 3%CoAP. On the other hand, the presence of
Co3O4 which contains both Co (II) and Co (III) was confirmed in 10%CoAP. It is clear from
this study that the electro-activity of CoAP strongly depends on the oxidation state of cobalt.
However, the effect of agglomeration and cobalt oxide particle sizes cannot be ruled out.
PB  - Serbian Ceramic Society
C3  - Program and the book of abstracts - Serbian Ceramic Society Conference – Advanced Ceramics and Application X, 26-27th September 2022, Belgrade, Serbia
T1  - Surface characterization of aluminum pillared clay-supported cobalt
SP  - 68
EP  - 68
UR  - https://hdl.handle.net/21.15107/rcub_cer_6281
ER  - 

@conference{
author = "Milovanović, Biljana and Marinović, Sanja and Milutinović Nikolić, Aleksandra and Petrović, Rada and Stevanović, Gordana and Banković, Predrag and Mudrinić, Tihana",
year = "2022",
abstract = "Our previous study demonstrated that cobalt content strongly affected the electro-activity of
aluminum pillared clay-supported cobalt (CoAP) toward glucose oxidation. It was found that
the electro-activity of CoAP increased with the increase of cobalt loading. However, at the 10
wt.% of cobalt content, the electro-activity significantly decreased. In the present study, the
focus is on the investigation of the nature of the surface sites that might cause the difference
in the electro-activity of CoAP. For this purpose, CoAP with 3 wt.% and 10 wt.% cobalt
contents (x%CoAP, x=3 and 10) were characterized using FE-SEM and HR-TEM with EDX
techniques, and XPS. The microscopic techniques coupled with EDX have shown that cobalt
oxide nanoparticles were evenly distributed in both samples. However, the higher cobalt
loading resulted in cobalt oxide agglomeration that led to larger particle sizes. The results of
XPS confirmed the presence of Co (II) in the 3%CoAP. On the other hand, the presence of
Co3O4 which contains both Co (II) and Co (III) was confirmed in 10%CoAP. It is clear from
this study that the electro-activity of CoAP strongly depends on the oxidation state of cobalt.
However, the effect of agglomeration and cobalt oxide particle sizes cannot be ruled out.",
publisher = "Serbian Ceramic Society",
journal = "Program and the book of abstracts - Serbian Ceramic Society Conference – Advanced Ceramics and Application X, 26-27th September 2022, Belgrade, Serbia",
title = "Surface characterization of aluminum pillared clay-supported cobalt",
pages = "68-68",
url = "https://hdl.handle.net/21.15107/rcub_cer_6281"
}

Milovanović, B., Marinović, S., Milutinović Nikolić, A., Petrović, R., Stevanović, G., Banković, P.,& Mudrinić, T.. (2022). Surface characterization of aluminum pillared clay-supported cobalt. in Program and the book of abstracts - Serbian Ceramic Society Conference – Advanced Ceramics and Application X, 26-27th September 2022, Belgrade, Serbia
Serbian Ceramic Society., 68-68.
https://hdl.handle.net/21.15107/rcub_cer_6281

Milovanović B, Marinović S, Milutinović Nikolić A, Petrović R, Stevanović G, Banković P, Mudrinić T. Surface characterization of aluminum pillared clay-supported cobalt. in Program and the book of abstracts - Serbian Ceramic Society Conference – Advanced Ceramics and Application X, 26-27th September 2022, Belgrade, Serbia. 2022;:68-68.
https://hdl.handle.net/21.15107/rcub_cer_6281 .

Milovanović, Biljana, Marinović, Sanja, Milutinović Nikolić, Aleksandra, Petrović, Rada, Stevanović, Gordana, Banković, Predrag, Mudrinić, Tihana, "Surface characterization of aluminum pillared clay-supported cobalt" in Program and the book of abstracts - Serbian Ceramic Society Conference – Advanced Ceramics and Application X, 26-27th September 2022, Belgrade, Serbia (2022):68-68,
https://hdl.handle.net/21.15107/rcub_cer_6281 .

TY  - JOUR
AU  - Marinović, Sanja
AU  - Mudrinić, Tihana
AU  - Milovanović, Biljana
AU  - Jović-Jovičić, Nataša
AU  - Ajduković, Marija
AU  - Banković, Predrag
AU  - Milutinović Nikolić, Aleksandra
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5569
AB  - A series of aluminum pillared montmorillonite impregnated with different cobalt loadings (1–10) mass% were investigated as catalysts in oxidative degradation of organic water pollutant, model azo dye (tartrazine), in the presence of Oxone®. Oxone® has potassium monopersulfate as an active component which is a precursor of sulfate anion radicals. With the increase of cobalt loading up to 4 mass% the efficiency of catalysts increased. The catalytic tests revealed that the sample impregnated with 4 mass% of cobalt had the best catalytic activity within investigated series. The presence of a new cobalt-containing phase was identified in samples impregnated with 5 mass% and 10 mass% of cobalt. This finding indicated that although these samples had a higher content of catalytically active component i.e., cobalt, the presence of a new cobalt phase was less favorable for Oxone® activation and formation of sulfate anion radicals. The effect of the different cobalt loading on the reaction kinetics was investigated. The pseudo-first-order kinetic model was found to be the most appropriate to fit the experimental data for all investigated catalysts under defined experimental conditions. Both decolorization and degradation of aryl moieties had the highest pseudo-first-order rate constant for catalyst impregnated with 4 mass% of cobalt.
PB  - Springer
T2  - Reaction Kinetics, Mechanisms and Catalysis
T1  - The influence of cobalt loading in cobalt-supported aluminum pillared montmorillonite on the kinetic of Oxone® activated oxidative degradation of tartrazine
DO  - 10.1007/s11144-022-02338-z
ER  - 

@article{
author = "Marinović, Sanja and Mudrinić, Tihana and Milovanović, Biljana and Jović-Jovičić, Nataša and Ajduković, Marija and Banković, Predrag and Milutinović Nikolić, Aleksandra",
year = "2022",
abstract = "A series of aluminum pillared montmorillonite impregnated with different cobalt loadings (1–10) mass% were investigated as catalysts in oxidative degradation of organic water pollutant, model azo dye (tartrazine), in the presence of Oxone®. Oxone® has potassium monopersulfate as an active component which is a precursor of sulfate anion radicals. With the increase of cobalt loading up to 4 mass% the efficiency of catalysts increased. The catalytic tests revealed that the sample impregnated with 4 mass% of cobalt had the best catalytic activity within investigated series. The presence of a new cobalt-containing phase was identified in samples impregnated with 5 mass% and 10 mass% of cobalt. This finding indicated that although these samples had a higher content of catalytically active component i.e., cobalt, the presence of a new cobalt phase was less favorable for Oxone® activation and formation of sulfate anion radicals. The effect of the different cobalt loading on the reaction kinetics was investigated. The pseudo-first-order kinetic model was found to be the most appropriate to fit the experimental data for all investigated catalysts under defined experimental conditions. Both decolorization and degradation of aryl moieties had the highest pseudo-first-order rate constant for catalyst impregnated with 4 mass% of cobalt.",
publisher = "Springer",
journal = "Reaction Kinetics, Mechanisms and Catalysis",
title = "The influence of cobalt loading in cobalt-supported aluminum pillared montmorillonite on the kinetic of Oxone® activated oxidative degradation of tartrazine",
doi = "10.1007/s11144-022-02338-z"
}

Marinović, S., Mudrinić, T., Milovanović, B., Jović-Jovičić, N., Ajduković, M., Banković, P.,& Milutinović Nikolić, A.. (2022). The influence of cobalt loading in cobalt-supported aluminum pillared montmorillonite on the kinetic of Oxone® activated oxidative degradation of tartrazine. in Reaction Kinetics, Mechanisms and Catalysis
Springer..
https://doi.org/10.1007/s11144-022-02338-z

Marinović S, Mudrinić T, Milovanović B, Jović-Jovičić N, Ajduković M, Banković P, Milutinović Nikolić A. The influence of cobalt loading in cobalt-supported aluminum pillared montmorillonite on the kinetic of Oxone® activated oxidative degradation of tartrazine. in Reaction Kinetics, Mechanisms and Catalysis. 2022;.
doi:10.1007/s11144-022-02338-z .

Marinović, Sanja, Mudrinić, Tihana, Milovanović, Biljana, Jović-Jovičić, Nataša, Ajduković, Marija, Banković, Predrag, Milutinović Nikolić, Aleksandra, "The influence of cobalt loading in cobalt-supported aluminum pillared montmorillonite on the kinetic of Oxone® activated oxidative degradation of tartrazine" in Reaction Kinetics, Mechanisms and Catalysis (2022),
https://doi.org/10.1007/s11144-022-02338-z . .

TY  - CONF
AU  - Mudrinić, Tihana
AU  - Milovanović, Biljana
AU  - Petrović, Srđan
AU  - Pavlović, Stefan
AU  - Banković, Predrag
AU  - Milutinović Nikolić, Aleksandra
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5305
AB  - Recently the focus of electrochemical glucose sensing is on the fabrication of enzyme-free electrodes based on non-precious transition metal oxides, especially cobalt oxide [1]. To our best knowledge, these materials were primarily prepared by conventional methods using solutions, while the solvent-free mechanochemical approach was scarcely reported. Therefore, in this work Co3O4 supported on alumina (Co3O4/Al2O3) were prepared by ball milling using different milling times (0.5, 1, and 2 h) and Co3O4 contents (4, 8, and 16 wt. %). Ball to powder ratio was 30:1 and the rotation speed was 300 rpm. The electrodes based on the synthesized material were prepared in the form of a carbon paste electrodes (CP-Co3O4/Al2O3). The particle size distribution, phase, and chemical composition of the obtained materials were determined using LDPSA, XRPD, and XRF, respectively. The electrochemical performance of the CP-Co3O4/A12O3 electrode was tested in an alkaline solution containing glucose using cyclovoltammetry (CV) and chronoamperometry (ChA). CV revealed that milling time affected the electrochemical response. The highest current response was obtained with material milled for 1 h. Both ChA and CV confirmed that the electrochemical performance was further improved by increasing cobalt content. The CP electrode-based mechanochemically prepared samples showed enhanced performance in comparison to hand mixed Co3O4 and alumina. The beneficial effect of ball milling was attributed to the high dispersion of cobalt oxides over alumina even for large cobalt loadings without agglomeration. The obtained experimental results proved that the solvent-free mechanochemical approach is a promising synthetic route for obtaining green and sustainable glucose-sensing material for the fourth generation.
PB  - Calgary, Italy :  University of Cagliari
PB  - COST Action CA18112
C3  - Book of abstracts - 10th International Conference on Mechanochemistry and Mechanical Alloying
T1  - Mechanochemical approach for non-enzymatic sensing materials
UR  - https://hdl.handle.net/21.15107/rcub_cer_5305
ER  - 

@conference{
author = "Mudrinić, Tihana and Milovanović, Biljana and Petrović, Srđan and Pavlović, Stefan and Banković, Predrag and Milutinović Nikolić, Aleksandra",
year = "2022",
abstract = "Recently the focus of electrochemical glucose sensing is on the fabrication of enzyme-free electrodes based on non-precious transition metal oxides, especially cobalt oxide [1]. To our best knowledge, these materials were primarily prepared by conventional methods using solutions, while the solvent-free mechanochemical approach was scarcely reported. Therefore, in this work Co3O4 supported on alumina (Co3O4/Al2O3) were prepared by ball milling using different milling times (0.5, 1, and 2 h) and Co3O4 contents (4, 8, and 16 wt. %). Ball to powder ratio was 30:1 and the rotation speed was 300 rpm. The electrodes based on the synthesized material were prepared in the form of a carbon paste electrodes (CP-Co3O4/Al2O3). The particle size distribution, phase, and chemical composition of the obtained materials were determined using LDPSA, XRPD, and XRF, respectively. The electrochemical performance of the CP-Co3O4/A12O3 electrode was tested in an alkaline solution containing glucose using cyclovoltammetry (CV) and chronoamperometry (ChA). CV revealed that milling time affected the electrochemical response. The highest current response was obtained with material milled for 1 h. Both ChA and CV confirmed that the electrochemical performance was further improved by increasing cobalt content. The CP electrode-based mechanochemically prepared samples showed enhanced performance in comparison to hand mixed Co3O4 and alumina. The beneficial effect of ball milling was attributed to the high dispersion of cobalt oxides over alumina even for large cobalt loadings without agglomeration. The obtained experimental results proved that the solvent-free mechanochemical approach is a promising synthetic route for obtaining green and sustainable glucose-sensing material for the fourth generation.",
publisher = "Calgary, Italy :  University of Cagliari, COST Action CA18112",
journal = "Book of abstracts - 10th International Conference on Mechanochemistry and Mechanical Alloying",
title = "Mechanochemical approach for non-enzymatic sensing materials",
url = "https://hdl.handle.net/21.15107/rcub_cer_5305"
}

Mudrinić, T., Milovanović, B., Petrović, S., Pavlović, S., Banković, P.,& Milutinović Nikolić, A.. (2022). Mechanochemical approach for non-enzymatic sensing materials. in Book of abstracts - 10th International Conference on Mechanochemistry and Mechanical Alloying
Calgary, Italy :  University of Cagliari..
https://hdl.handle.net/21.15107/rcub_cer_5305

Mudrinić T, Milovanović B, Petrović S, Pavlović S, Banković P, Milutinović Nikolić A. Mechanochemical approach for non-enzymatic sensing materials. in Book of abstracts - 10th International Conference on Mechanochemistry and Mechanical Alloying. 2022;.
https://hdl.handle.net/21.15107/rcub_cer_5305 .

Mudrinić, Tihana, Milovanović, Biljana, Petrović, Srđan, Pavlović, Stefan, Banković, Predrag, Milutinović Nikolić, Aleksandra, "Mechanochemical approach for non-enzymatic sensing materials" in Book of abstracts - 10th International Conference on Mechanochemistry and Mechanical Alloying (2022),
https://hdl.handle.net/21.15107/rcub_cer_5305 .

TY  - JOUR
AU  - Milovanović, Biljana
AU  - Marinović, Sanja
AU  - Vuković, Zorica
AU  - Milutinović Nikolić, Aleksandra
AU  - Petrović, Rada
AU  - Banković, Predrag
AU  - Mudrinić, Tihana
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5246
AB  - In this paper, the influence of cobalt loading in pillared clay-supported cobalt materials on their electrocatalytic performance toward glucose oxidation was investigated. A series of aluminum-pillared montmorillonite clay (AP) materials with different cobalt loadings (x%CoAP, x = 1, 3, 5, and 10 wt%) was synthesized using the incipient wetness impregnation method. The X-ray powder diffraction (XRPD), inductively coupled plasma optical emission spectroscopy (ICP-OES), Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy coupled with energy dispersive X-ray spectrometry (FE-SEM/EDX), high resolution transmission electron microscopy (HR-TEM) coupled with EDX, X-ray photoelectron spectroscopy (XPS), and low temperature N2 physisorption, were employed for characterization of the materials. The incorporation of cobalt in porous structure of pillared montmorillonite was confirmed. The synthesized materials (x%CoAP) were used for modification of carbon paste (CP) electrode and tested in reaction of glucose electrooxidation. The electrochemical measurements were conducted using cyclic voltammetry and chronoamperometry in a 1 M NaOH solution, with or without glucose. The results showed that the increase of cobalt loading improved the electrode performance toward glucose. The highest current response and sensitivity were obtained for the CP-5%CoAP electrode. A lower electrode performance of CP-10%CoAP was correlated with the presence of higher quantities of Co3O4 (confirmed by XRPD and XPS) in the electrode material. The mechanism and kinetics of glucose electrooxidation was studied in more details for the best performing electrode (CP-5%CoAP). It was found that the process was diffusion-controlled and the diffusion coefficient was determined. The charge transfer coefficient and catalytic rate constant were calculated. The electrode exhibited satisfactory repeatability, reproducibility, stability, and selectivity. The obtained results showed that appropriate amount of cobalt loading in pillared clay led to the obtainment of non-enzymatic electrode materials suitable for sustainable and green glucose sensors.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - The influence of cobalt loading on electrocatalytic performance toward glucose oxidation of pillared montmorillonite-supported cobalt
VL  - 915
SP  - 116332
DO  - 10.1016/j.jelechem.2022.116332
ER  - 

@article{
author = "Milovanović, Biljana and Marinović, Sanja and Vuković, Zorica and Milutinović Nikolić, Aleksandra and Petrović, Rada and Banković, Predrag and Mudrinić, Tihana",
year = "2022",
abstract = "In this paper, the influence of cobalt loading in pillared clay-supported cobalt materials on their electrocatalytic performance toward glucose oxidation was investigated. A series of aluminum-pillared montmorillonite clay (AP) materials with different cobalt loadings (x%CoAP, x = 1, 3, 5, and 10 wt%) was synthesized using the incipient wetness impregnation method. The X-ray powder diffraction (XRPD), inductively coupled plasma optical emission spectroscopy (ICP-OES), Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy coupled with energy dispersive X-ray spectrometry (FE-SEM/EDX), high resolution transmission electron microscopy (HR-TEM) coupled with EDX, X-ray photoelectron spectroscopy (XPS), and low temperature N2 physisorption, were employed for characterization of the materials. The incorporation of cobalt in porous structure of pillared montmorillonite was confirmed. The synthesized materials (x%CoAP) were used for modification of carbon paste (CP) electrode and tested in reaction of glucose electrooxidation. The electrochemical measurements were conducted using cyclic voltammetry and chronoamperometry in a 1 M NaOH solution, with or without glucose. The results showed that the increase of cobalt loading improved the electrode performance toward glucose. The highest current response and sensitivity were obtained for the CP-5%CoAP electrode. A lower electrode performance of CP-10%CoAP was correlated with the presence of higher quantities of Co3O4 (confirmed by XRPD and XPS) in the electrode material. The mechanism and kinetics of glucose electrooxidation was studied in more details for the best performing electrode (CP-5%CoAP). It was found that the process was diffusion-controlled and the diffusion coefficient was determined. The charge transfer coefficient and catalytic rate constant were calculated. The electrode exhibited satisfactory repeatability, reproducibility, stability, and selectivity. The obtained results showed that appropriate amount of cobalt loading in pillared clay led to the obtainment of non-enzymatic electrode materials suitable for sustainable and green glucose sensors.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "The influence of cobalt loading on electrocatalytic performance toward glucose oxidation of pillared montmorillonite-supported cobalt",
volume = "915",
pages = "116332",
doi = "10.1016/j.jelechem.2022.116332"
}

Milovanović, B., Marinović, S., Vuković, Z., Milutinović Nikolić, A., Petrović, R., Banković, P.,& Mudrinić, T.. (2022). The influence of cobalt loading on electrocatalytic performance toward glucose oxidation of pillared montmorillonite-supported cobalt. in Journal of Electroanalytical Chemistry
Elsevier., 915, 116332.
https://doi.org/10.1016/j.jelechem.2022.116332

Milovanović B, Marinović S, Vuković Z, Milutinović Nikolić A, Petrović R, Banković P, Mudrinić T. The influence of cobalt loading on electrocatalytic performance toward glucose oxidation of pillared montmorillonite-supported cobalt. in Journal of Electroanalytical Chemistry. 2022;915:116332.
doi:10.1016/j.jelechem.2022.116332 .

Milovanović, Biljana, Marinović, Sanja, Vuković, Zorica, Milutinović Nikolić, Aleksandra, Petrović, Rada, Banković, Predrag, Mudrinić, Tihana, "The influence of cobalt loading on electrocatalytic performance toward glucose oxidation of pillared montmorillonite-supported cobalt" in Journal of Electroanalytical Chemistry, 915 (2022):116332,
https://doi.org/10.1016/j.jelechem.2022.116332 . .

TY  - CONF
AU  - Milovanović, Biljana
AU  - Marinović, Sanja
AU  - Petrović, Rada
AU  - Banković, Predrag
AU  - Mudrinić, Tihana
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6283
AB  - This work investigated the kinetics of the glucose oxidation reaction on the carbon paste electrode modified with aluminum pillared clay-supported cobalt (CP-CoAP) in alkaline solution. Cyclic voltammetry and double-step chronoamperometry methods were employed for determining the kinetic parameters such as the charge transfer coefficient, the catalytic rate constant, and the diffusion coefficient. The obtained results confirm that the CP-CoAP can be considered as a competitive electrode material for glucose oxidation.
PB  - Society of Physical Chemists of Serbia
C3  - Proceedings - 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2022, September, 26-30, 2022, Belgrade, Serbia
T1  - Kinetic study of glucose oxidation reaction on carbon paste electrode modified with pillared clay-supported cobalt
VL  - I
SP  - 141
EP  - 144
UR  - https://hdl.handle.net/21.15107/rcub_cer_6283
ER  - 

@conference{
author = "Milovanović, Biljana and Marinović, Sanja and Petrović, Rada and Banković, Predrag and Mudrinić, Tihana",
year = "2022",
abstract = "This work investigated the kinetics of the glucose oxidation reaction on the carbon paste electrode modified with aluminum pillared clay-supported cobalt (CP-CoAP) in alkaline solution. Cyclic voltammetry and double-step chronoamperometry methods were employed for determining the kinetic parameters such as the charge transfer coefficient, the catalytic rate constant, and the diffusion coefficient. The obtained results confirm that the CP-CoAP can be considered as a competitive electrode material for glucose oxidation.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Proceedings - 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2022, September, 26-30, 2022, Belgrade, Serbia",
title = "Kinetic study of glucose oxidation reaction on carbon paste electrode modified with pillared clay-supported cobalt",
volume = "I",
pages = "141-144",
url = "https://hdl.handle.net/21.15107/rcub_cer_6283"
}

Milovanović, B., Marinović, S., Petrović, R., Banković, P.,& Mudrinić, T.. (2022). Kinetic study of glucose oxidation reaction on carbon paste electrode modified with pillared clay-supported cobalt. in Proceedings - 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2022, September, 26-30, 2022, Belgrade, Serbia
Society of Physical Chemists of Serbia., I, 141-144.
https://hdl.handle.net/21.15107/rcub_cer_6283

Milovanović B, Marinović S, Petrović R, Banković P, Mudrinić T. Kinetic study of glucose oxidation reaction on carbon paste electrode modified with pillared clay-supported cobalt. in Proceedings - 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2022, September, 26-30, 2022, Belgrade, Serbia. 2022;I:141-144.
https://hdl.handle.net/21.15107/rcub_cer_6283 .

Milovanović, Biljana, Marinović, Sanja, Petrović, Rada, Banković, Predrag, Mudrinić, Tihana, "Kinetic study of glucose oxidation reaction on carbon paste electrode modified with pillared clay-supported cobalt" in Proceedings - 16th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2022, September, 26-30, 2022, Belgrade, Serbia, I (2022):141-144,
https://hdl.handle.net/21.15107/rcub_cer_6283 .

TY  - CONF
AU  - Stevanović, Gordana
AU  - Jović-Jovičić, Nataša
AU  - Krstić, Jugoslav
AU  - Milutinović Nikolić, Aleksandra
AU  - Milovanović, Biljana
AU  - Radulović, Katarina
AU  - Ajduković, Marija
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6683
AB  - In this work cobalt supported on chitosan-derived carbon-smectite composite catalyst was synthetized using impregnation-carbonization method (Co/cCh-S). The carbonization temperature was 400 °C. The obtained catalyst was tested as peroxymonosulfate (in form of Oxone®) activator for the food dye tartrazine degradation. The textural properties were obtained using low temperature N2 physisorption. The calculated textural parameters of the Co/cCh-S catalyst were compared with properties of the carbonized chitosane-smectite composite (cCh-S). The catalytic tests confirmed that neither Oxone® without catalyst nor cCh-S were unable to activate Oxone®. The catalyst Co/cCh-S was found to be effective for tartrazine degradation in presence of Oxone®.
PB  - Society of Physical Chemists of Serbia
C3  - Proceedings - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24 2021, Belgrade, Serbia
T1  - Cobalt supported chitosan-derived carbon-smectite composite for catalytic activation of peroxymonosulfate in water
VL  - I
SP  - 151
EP  - 154
UR  - https://hdl.handle.net/21.15107/rcub_cer_6683
ER  - 

@conference{
author = "Stevanović, Gordana and Jović-Jovičić, Nataša and Krstić, Jugoslav and Milutinović Nikolić, Aleksandra and Milovanović, Biljana and Radulović, Katarina and Ajduković, Marija",
year = "2021",
abstract = "In this work cobalt supported on chitosan-derived carbon-smectite composite catalyst was synthetized using impregnation-carbonization method (Co/cCh-S). The carbonization temperature was 400 °C. The obtained catalyst was tested as peroxymonosulfate (in form of Oxone®) activator for the food dye tartrazine degradation. The textural properties were obtained using low temperature N2 physisorption. The calculated textural parameters of the Co/cCh-S catalyst were compared with properties of the carbonized chitosane-smectite composite (cCh-S). The catalytic tests confirmed that neither Oxone® without catalyst nor cCh-S were unable to activate Oxone®. The catalyst Co/cCh-S was found to be effective for tartrazine degradation in presence of Oxone®.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Proceedings - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24 2021, Belgrade, Serbia",
title = "Cobalt supported chitosan-derived carbon-smectite composite for catalytic activation of peroxymonosulfate in water",
volume = "I",
pages = "151-154",
url = "https://hdl.handle.net/21.15107/rcub_cer_6683"
}

Stevanović, G., Jović-Jovičić, N., Krstić, J., Milutinović Nikolić, A., Milovanović, B., Radulović, K.,& Ajduković, M.. (2021). Cobalt supported chitosan-derived carbon-smectite composite for catalytic activation of peroxymonosulfate in water. in Proceedings - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24 2021, Belgrade, Serbia
Society of Physical Chemists of Serbia., I, 151-154.
https://hdl.handle.net/21.15107/rcub_cer_6683

Stevanović G, Jović-Jovičić N, Krstić J, Milutinović Nikolić A, Milovanović B, Radulović K, Ajduković M. Cobalt supported chitosan-derived carbon-smectite composite for catalytic activation of peroxymonosulfate in water. in Proceedings - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24 2021, Belgrade, Serbia. 2021;I:151-154.
https://hdl.handle.net/21.15107/rcub_cer_6683 .

Stevanović, Gordana, Jović-Jovičić, Nataša, Krstić, Jugoslav, Milutinović Nikolić, Aleksandra, Milovanović, Biljana, Radulović, Katarina, Ajduković, Marija, "Cobalt supported chitosan-derived carbon-smectite composite for catalytic activation of peroxymonosulfate in water" in Proceedings - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24 2021, Belgrade, Serbia, I (2021):151-154,
https://hdl.handle.net/21.15107/rcub_cer_6683 .

TY  - CONF
AU  - Mudrinić, Tihana
AU  - Petrović, Srđan
AU  - Krstić, Jugoslav
AU  - Milovanović, Biljana
AU  - Pavlović, Stefan
AU  - Milutinović Nikolić, Aleksandra
AU  - Banković, Predrag
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4780
AB  - This work describes the possible application of cyclic voltammetry (CV) for obtaining information  about  cobalt  phases  onto  alumina supported  cobalt  catalysts.Starting  from  the  same  amount  of  ingredients,  two  catalysts  with  different  phases  of  cobalt  were  prepared:  Co3O4-A  obtained  by  manual  grinding  of  Co3O4  and alumina  in  an  agate  mortar  and  CoAl2O4-A  obtained  mechanochemically  using  a  planetary  ball  mill.The  final  productswere characterized  by  the  temperature-programmed  reduction  (TPR)  and  CV.  The  TPR  profile  of  Co3O4-A  showed  peaks  between  200–500°C  characteristic  of  Co3O4  reduction,  while  the  profile  of  CoAl2O4-A  was  altered  in  the  whole  temperature  region  and  especially  by  the  appearance  of  new  peaks  in  the  region  of  temperatures  of  600–900oC.This  result  indicated  that  a  certain  amount  ofhard-to-reduce  cobalt  aluminate  is  generated  during  milling.  CVin  alkaline  solution  revealed  that  theoxidation/reduction  of  cobalt  in  CoAl2O4-Aoccurred  at  more  negative  potentials  compared  with  cobalt  in  Co3O4-A.Negative  shift  of  peak  potential  well  correlated  with  the  appearance  of  high-temperature  TPR  peak  and  could  be  ascribed  to  the cobalt phase which has lower tendency to get reduced. These findings encourage the idea of using the CV as low cost and rapid assay for distinguishing the cobalt phases onto alumina.
PB  - Belgrade: Serbian Ceramic Society
C3  - Program and the Book of Abstracts - The 9th Serbian Ceramics Society Conference ''Advanced Ceramics and Application'', Belgrade
T1  - Electrochemical characterization of cobalt phases onto alumina supported cobalt catalyst
SP  - 85
EP  - 85
UR  - https://hdl.handle.net/21.15107/rcub_cer_4780
ER  - 

@conference{
author = "Mudrinić, Tihana and Petrović, Srđan and Krstić, Jugoslav and Milovanović, Biljana and Pavlović, Stefan and Milutinović Nikolić, Aleksandra and Banković, Predrag",
year = "2021",
abstract = "This work describes the possible application of cyclic voltammetry (CV) for obtaining information  about  cobalt  phases  onto  alumina supported  cobalt  catalysts.Starting  from  the  same  amount  of  ingredients,  two  catalysts  with  different  phases  of  cobalt  were  prepared:  Co3O4-A  obtained  by  manual  grinding  of  Co3O4  and alumina  in  an  agate  mortar  and  CoAl2O4-A  obtained  mechanochemically  using  a  planetary  ball  mill.The  final  productswere characterized  by  the  temperature-programmed  reduction  (TPR)  and  CV.  The  TPR  profile  of  Co3O4-A  showed  peaks  between  200–500°C  characteristic  of  Co3O4  reduction,  while  the  profile  of  CoAl2O4-A  was  altered  in  the  whole  temperature  region  and  especially  by  the  appearance  of  new  peaks  in  the  region  of  temperatures  of  600–900oC.This  result  indicated  that  a  certain  amount  ofhard-to-reduce  cobalt  aluminate  is  generated  during  milling.  CVin  alkaline  solution  revealed  that  theoxidation/reduction  of  cobalt  in  CoAl2O4-Aoccurred  at  more  negative  potentials  compared  with  cobalt  in  Co3O4-A.Negative  shift  of  peak  potential  well  correlated  with  the  appearance  of  high-temperature  TPR  peak  and  could  be  ascribed  to  the cobalt phase which has lower tendency to get reduced. These findings encourage the idea of using the CV as low cost and rapid assay for distinguishing the cobalt phases onto alumina.",
publisher = "Belgrade: Serbian Ceramic Society",
journal = "Program and the Book of Abstracts - The 9th Serbian Ceramics Society Conference ''Advanced Ceramics and Application'', Belgrade",
title = "Electrochemical characterization of cobalt phases onto alumina supported cobalt catalyst",
pages = "85-85",
url = "https://hdl.handle.net/21.15107/rcub_cer_4780"
}

Mudrinić, T., Petrović, S., Krstić, J., Milovanović, B., Pavlović, S., Milutinović Nikolić, A.,& Banković, P.. (2021). Electrochemical characterization of cobalt phases onto alumina supported cobalt catalyst. in Program and the Book of Abstracts - The 9th Serbian Ceramics Society Conference ''Advanced Ceramics and Application'', Belgrade
Belgrade: Serbian Ceramic Society., 85-85.
https://hdl.handle.net/21.15107/rcub_cer_4780

Mudrinić T, Petrović S, Krstić J, Milovanović B, Pavlović S, Milutinović Nikolić A, Banković P. Electrochemical characterization of cobalt phases onto alumina supported cobalt catalyst. in Program and the Book of Abstracts - The 9th Serbian Ceramics Society Conference ''Advanced Ceramics and Application'', Belgrade. 2021;:85-85.
https://hdl.handle.net/21.15107/rcub_cer_4780 .

Mudrinić, Tihana, Petrović, Srđan, Krstić, Jugoslav, Milovanović, Biljana, Pavlović, Stefan, Milutinović Nikolić, Aleksandra, Banković, Predrag, "Electrochemical characterization of cobalt phases onto alumina supported cobalt catalyst" in Program and the Book of Abstracts - The 9th Serbian Ceramics Society Conference ''Advanced Ceramics and Application'', Belgrade (2021):85-85,
https://hdl.handle.net/21.15107/rcub_cer_4780 .

TY  - CONF
AU  - Milovanović, Biljana
AU  - Marinović, Sanja
AU  - Vuković, Zorica
AU  - Ajduković, Marija
AU  - Stevanović, Gordana
AU  - Banković, Predrag
AU  - Mudrinić, Tihana
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6288
AB  - The aluminum pillared clay (AP) was synthesized and impregnated with various cobalt loadings (x%CoAP, x=1, 3, 5, and 10 wt.%) by incipient wetness impregnation method. All samples were characterized by using X-ray powder diffraction (XRPD), inductively coupled plasma optical emission spectroscopy (ICP-OES) and low temperature N2 physisorption techniques. The chemical analysis confirmed the successful incorporation of cobalt in all impregnated samples. Nevertheless, only cobalt oxide (Co3O4) was identified for samples having higher cobalt contents. Furthermore, different cobalt loading was mainly affected the microporous region in such way that micropore surface area decreased with the increase of cobalt.
PB  - Society of Physical Chemists of Serbia
C3  - Proceedings - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24 2021, Belgrade, Serbia
T1  - Influence of cobalt loading on the physical-chemical properties of pillared clay - supported cobalt
VL  - II
SP  - 388
EP  - 390
UR  - https://hdl.handle.net/21.15107/rcub_cer_6288
ER  - 

@conference{
author = "Milovanović, Biljana and Marinović, Sanja and Vuković, Zorica and Ajduković, Marija and Stevanović, Gordana and Banković, Predrag and Mudrinić, Tihana",
year = "2021",
abstract = "The aluminum pillared clay (AP) was synthesized and impregnated with various cobalt loadings (x%CoAP, x=1, 3, 5, and 10 wt.%) by incipient wetness impregnation method. All samples were characterized by using X-ray powder diffraction (XRPD), inductively coupled plasma optical emission spectroscopy (ICP-OES) and low temperature N2 physisorption techniques. The chemical analysis confirmed the successful incorporation of cobalt in all impregnated samples. Nevertheless, only cobalt oxide (Co3O4) was identified for samples having higher cobalt contents. Furthermore, different cobalt loading was mainly affected the microporous region in such way that micropore surface area decreased with the increase of cobalt.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Proceedings - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24 2021, Belgrade, Serbia",
title = "Influence of cobalt loading on the physical-chemical properties of pillared clay - supported cobalt",
volume = "II",
pages = "388-390",
url = "https://hdl.handle.net/21.15107/rcub_cer_6288"
}

Milovanović, B., Marinović, S., Vuković, Z., Ajduković, M., Stevanović, G., Banković, P.,& Mudrinić, T.. (2021). Influence of cobalt loading on the physical-chemical properties of pillared clay - supported cobalt. in Proceedings - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24 2021, Belgrade, Serbia
Society of Physical Chemists of Serbia., II, 388-390.
https://hdl.handle.net/21.15107/rcub_cer_6288

Milovanović B, Marinović S, Vuković Z, Ajduković M, Stevanović G, Banković P, Mudrinić T. Influence of cobalt loading on the physical-chemical properties of pillared clay - supported cobalt. in Proceedings - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24 2021, Belgrade, Serbia. 2021;II:388-390.
https://hdl.handle.net/21.15107/rcub_cer_6288 .

Milovanović, Biljana, Marinović, Sanja, Vuković, Zorica, Ajduković, Marija, Stevanović, Gordana, Banković, Predrag, Mudrinić, Tihana, "Influence of cobalt loading on the physical-chemical properties of pillared clay - supported cobalt" in Proceedings - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2021, September 20-24 2021, Belgrade, Serbia, II (2021):388-390,
https://hdl.handle.net/21.15107/rcub_cer_6288 .

TY  - CONF
AU  - Milovanović, Biljana
AU  - Mudrinić, Tihana
AU  - Marinović, Sanja
AU  - Ajduković, Marija
AU  - Milutinović Nikolić, Aleksandra
AU  - Banković, Predrag
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4878
AB  - This work is focused on our further efforts to improve the electrochemical performance of cobalt oxide supported on aluminum pillared clay (CoAP) towards glucose oxidation [1]. To this end, the effect of different cobalt loadings onto the electrochemical performance of CoAP was investigated. Four CoAP samples, with theoretical cobalt loadings corresponding to 1, 3, 5, 10 wt% introduced to the pillared clay (x%CoAP), were prepared using the incipient wetness impregnation method [2]. Furthermore, electrodes based on the obtained materials were prepared in the form of carbon paste electrode (CP-x%CoAP) with the same x%CoAP to carbon black (CB) mass ratio. The electrochemical performance of each of CP-x%CoAP was investigated using the cyclic voltammetry and chronoamperometry in 1M NaOH with and without glucose. The electrochemical measurements were carried out in a three-electrode system with an Ag/AgCl and platinum rod as the reference and counter electrodes, respectively. Preliminary results revealed that cobalt content in the pillared clay (AP) significantly affected both the intensity of the current peak of glucose oxidation and sensitivity. As cobalt loading increased (up to 5%) the glucose current response and sensitivity increased. On the other hand, the electrochemical behavior of the electrode with 10% cobalt loading deviated from this trend. The obtained results indicate that the variation of cobalt content could be used for fine-tuning of the electrocatalytic performance of CP-CoAP. The characterization of the synthesized materials required for establishing the correlation between the physical-chemical properties and the corresponding electrochemical performance of CP-CoAP is ongoing.
PB  - Belgrade : Institute of Technical Sciences of SASA
PB  - Belgrade : Materials Research Society of Serbia
C3  - Program and the Book of Abstracts - 19th Young Researchers' Conference-Materials Science and Engineering
T1  - Effect of different cobalt loadings on the electrochemical performance of aluminum pillared clay-supported cobalt towards glucose oxidation
SP  - 59
EP  - 59
UR  - https://hdl.handle.net/21.15107/rcub_cer_4878
ER  - 

@conference{
author = "Milovanović, Biljana and Mudrinić, Tihana and Marinović, Sanja and Ajduković, Marija and Milutinović Nikolić, Aleksandra and Banković, Predrag",
year = "2021",
abstract = "This work is focused on our further efforts to improve the electrochemical performance of cobalt oxide supported on aluminum pillared clay (CoAP) towards glucose oxidation [1]. To this end, the effect of different cobalt loadings onto the electrochemical performance of CoAP was investigated. Four CoAP samples, with theoretical cobalt loadings corresponding to 1, 3, 5, 10 wt% introduced to the pillared clay (x%CoAP), were prepared using the incipient wetness impregnation method [2]. Furthermore, electrodes based on the obtained materials were prepared in the form of carbon paste electrode (CP-x%CoAP) with the same x%CoAP to carbon black (CB) mass ratio. The electrochemical performance of each of CP-x%CoAP was investigated using the cyclic voltammetry and chronoamperometry in 1M NaOH with and without glucose. The electrochemical measurements were carried out in a three-electrode system with an Ag/AgCl and platinum rod as the reference and counter electrodes, respectively. Preliminary results revealed that cobalt content in the pillared clay (AP) significantly affected both the intensity of the current peak of glucose oxidation and sensitivity. As cobalt loading increased (up to 5%) the glucose current response and sensitivity increased. On the other hand, the electrochemical behavior of the electrode with 10% cobalt loading deviated from this trend. The obtained results indicate that the variation of cobalt content could be used for fine-tuning of the electrocatalytic performance of CP-CoAP. The characterization of the synthesized materials required for establishing the correlation between the physical-chemical properties and the corresponding electrochemical performance of CP-CoAP is ongoing.",
publisher = "Belgrade : Institute of Technical Sciences of SASA, Belgrade : Materials Research Society of Serbia",
journal = "Program and the Book of Abstracts - 19th Young Researchers' Conference-Materials Science and Engineering",
title = "Effect of different cobalt loadings on the electrochemical performance of aluminum pillared clay-supported cobalt towards glucose oxidation",
pages = "59-59",
url = "https://hdl.handle.net/21.15107/rcub_cer_4878"
}

Milovanović, B., Mudrinić, T., Marinović, S., Ajduković, M., Milutinović Nikolić, A.,& Banković, P.. (2021). Effect of different cobalt loadings on the electrochemical performance of aluminum pillared clay-supported cobalt towards glucose oxidation. in Program and the Book of Abstracts - 19th Young Researchers' Conference-Materials Science and Engineering
Belgrade : Institute of Technical Sciences of SASA., 59-59.
https://hdl.handle.net/21.15107/rcub_cer_4878

Milovanović B, Mudrinić T, Marinović S, Ajduković M, Milutinović Nikolić A, Banković P. Effect of different cobalt loadings on the electrochemical performance of aluminum pillared clay-supported cobalt towards glucose oxidation. in Program and the Book of Abstracts - 19th Young Researchers' Conference-Materials Science and Engineering. 2021;:59-59.
https://hdl.handle.net/21.15107/rcub_cer_4878 .

Milovanović, Biljana, Mudrinić, Tihana, Marinović, Sanja, Ajduković, Marija, Milutinović Nikolić, Aleksandra, Banković, Predrag, "Effect of different cobalt loadings on the electrochemical performance of aluminum pillared clay-supported cobalt towards glucose oxidation" in Program and the Book of Abstracts - 19th Young Researchers' Conference-Materials Science and Engineering (2021):59-59,
https://hdl.handle.net/21.15107/rcub_cer_4878 .

TY  - CONF
AU  - Pavlović, Stefan
AU  - Marinković, Dalibor
AU  - Milovanović, Biljana
AU  - Tišma, Marina
AU  - Mojović, Ljiljana
AU  - Stanković, Miroslav
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4721
AB  - Waste-based zeolite supported CaO catalyst (20CaO/ZMFA) was synthesized by ultrasound-assisted impregnation from alcoholic suspension. Zeolite was previously synthesized from lignite coal fly ash (FA) by alkali activation in miniature rotating autoclave reactors (6.25 M NaOH, 260 °C, 4 h), whereas CaO was prepared by chicken eggshell (ES) calcination (900 ºC, 4 h). The final catalyst was obtained by precursor calcination at 550 °C, 4 h. The obtained catalyst was used for catalyst stability tests (reusability and leaching) in transesterification (methanol/oil molar ratio of 12/1, catalyst concentration of 4 wt%, and temperature of 60 °C) of three types of oily feedstocks, fresh sunflower oil (SFO), waste cooking oil (WCO) and model thermal treated (230 °C, 5 days) sunflower oil (SFOTT). The concentration of triacylglycerols (TAGs) and fatty acid methyl esters (FAMEs) was determined by GC and HPLC, respectively. The 20CaO/ZMFA exhibited high activity (FAME content > 96.5 % for 180 min) in the transesterification of all three oily feedstocks. The stability tests are shown that catalyst is stable even in four reaction cycles for SFO and WCO, whereas the Ca 2+ leaching was significantly lower compared to similar catalytic systems.
PB  - Fuel Science Center
C3  - 9th International Conference Fuel Science - From Production to Propulsion 2021
T1  - Stability of waste-based zeolite supported CaO catalyst for biodiesel production from waste oily feedstocks
UR  - https://hdl.handle.net/21.15107/rcub_cer_4721
ER  - 

@conference{
author = "Pavlović, Stefan and Marinković, Dalibor and Milovanović, Biljana and Tišma, Marina and Mojović, Ljiljana and Stanković, Miroslav",
year = "2021",
abstract = "Waste-based zeolite supported CaO catalyst (20CaO/ZMFA) was synthesized by ultrasound-assisted impregnation from alcoholic suspension. Zeolite was previously synthesized from lignite coal fly ash (FA) by alkali activation in miniature rotating autoclave reactors (6.25 M NaOH, 260 °C, 4 h), whereas CaO was prepared by chicken eggshell (ES) calcination (900 ºC, 4 h). The final catalyst was obtained by precursor calcination at 550 °C, 4 h. The obtained catalyst was used for catalyst stability tests (reusability and leaching) in transesterification (methanol/oil molar ratio of 12/1, catalyst concentration of 4 wt%, and temperature of 60 °C) of three types of oily feedstocks, fresh sunflower oil (SFO), waste cooking oil (WCO) and model thermal treated (230 °C, 5 days) sunflower oil (SFOTT). The concentration of triacylglycerols (TAGs) and fatty acid methyl esters (FAMEs) was determined by GC and HPLC, respectively. The 20CaO/ZMFA exhibited high activity (FAME content > 96.5 % for 180 min) in the transesterification of all three oily feedstocks. The stability tests are shown that catalyst is stable even in four reaction cycles for SFO and WCO, whereas the Ca 2+ leaching was significantly lower compared to similar catalytic systems.",
publisher = "Fuel Science Center",
journal = "9th International Conference Fuel Science - From Production to Propulsion 2021",
title = "Stability of waste-based zeolite supported CaO catalyst for biodiesel production from waste oily feedstocks",
url = "https://hdl.handle.net/21.15107/rcub_cer_4721"
}

Pavlović, S., Marinković, D., Milovanović, B., Tišma, M., Mojović, L.,& Stanković, M.. (2021). Stability of waste-based zeolite supported CaO catalyst for biodiesel production from waste oily feedstocks. in 9th International Conference Fuel Science - From Production to Propulsion 2021
Fuel Science Center..
https://hdl.handle.net/21.15107/rcub_cer_4721

Pavlović S, Marinković D, Milovanović B, Tišma M, Mojović L, Stanković M. Stability of waste-based zeolite supported CaO catalyst for biodiesel production from waste oily feedstocks. in 9th International Conference Fuel Science - From Production to Propulsion 2021. 2021;.
https://hdl.handle.net/21.15107/rcub_cer_4721 .

Pavlović, Stefan, Marinković, Dalibor, Milovanović, Biljana, Tišma, Marina, Mojović, Ljiljana, Stanković, Miroslav, "Stability of waste-based zeolite supported CaO catalyst for biodiesel production from waste oily feedstocks" in 9th International Conference Fuel Science - From Production to Propulsion 2021 (2021),
https://hdl.handle.net/21.15107/rcub_cer_4721 .

TY  - CONF
AU  - Novaković, Tanja
AU  - Milovanović, Biljana
AU  - Pavlović, Stefan
AU  - Banković, Predrag
AU  - Mojović, Zorica
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4781
AB  - Alumina oxyhydrates have different structural and textural properties, as well as different density of surface functional groups. Three alumina oxyhydrates with different water content, 3mol H2O/ mol Al2O3 (gibbsite), 1mol H2O/ mol Al2O3 (boehmite) and 0.6 mol H2O/ mol Al2O3 (α,γ-alumina phase), were used in this study. The samples were used as modifiers of carbon paste electrode. Their electrochemical behavior toward ferricyanide/ferrocyanide redox probe was evaluated by electrochemical impedance spectroscopy and cyclic voltammetry. 
 Ferricyanide/ferrocyanide redox system has a well-known electrochemical behavior and is sensitive to the changes occurring at the electrode surface. The lowest charge transfer resistance was obtained for α,γ-alumina phase. The redox process of ferri/ferro redox probe on investigated electrodes exhibited a quasi-reversible behavior, since the obtained values of peak-to-peak separation are greater than 59 mV value expected for a reversible process. The response toward quinone/hydroquinone redox probe was evaluated by cyclic voltammetry in buffered solutions at various pH. Gibbsite and boehmite showed expected response, while the surface groups of α,γ-alumina phase enabled quinone oxidation to proceed through two pathways simultaneously. The surface chemistry of investigated samples influenced their electrochemical properties.
PB  - Belgrade: Serbian Ceramic Society
C3  - Program and the Book of Abstracts - The nineth Serbian Ceramics Society Conference ''Advanced Ceramics and Application'', Belgrade
T1  - Insights into the effect of aluminum oxyhydrates properties on their electrochemical behavior
SP  - 89
EP  - 89
UR  - https://hdl.handle.net/21.15107/rcub_cer_4781
ER  - 

@conference{
author = "Novaković, Tanja and Milovanović, Biljana and Pavlović, Stefan and Banković, Predrag and Mojović, Zorica",
year = "2021",
abstract = "Alumina oxyhydrates have different structural and textural properties, as well as different density of surface functional groups. Three alumina oxyhydrates with different water content, 3mol H2O/ mol Al2O3 (gibbsite), 1mol H2O/ mol Al2O3 (boehmite) and 0.6 mol H2O/ mol Al2O3 (α,γ-alumina phase), were used in this study. The samples were used as modifiers of carbon paste electrode. Their electrochemical behavior toward ferricyanide/ferrocyanide redox probe was evaluated by electrochemical impedance spectroscopy and cyclic voltammetry. 
 Ferricyanide/ferrocyanide redox system has a well-known electrochemical behavior and is sensitive to the changes occurring at the electrode surface. The lowest charge transfer resistance was obtained for α,γ-alumina phase. The redox process of ferri/ferro redox probe on investigated electrodes exhibited a quasi-reversible behavior, since the obtained values of peak-to-peak separation are greater than 59 mV value expected for a reversible process. The response toward quinone/hydroquinone redox probe was evaluated by cyclic voltammetry in buffered solutions at various pH. Gibbsite and boehmite showed expected response, while the surface groups of α,γ-alumina phase enabled quinone oxidation to proceed through two pathways simultaneously. The surface chemistry of investigated samples influenced their electrochemical properties.",
publisher = "Belgrade: Serbian Ceramic Society",
journal = "Program and the Book of Abstracts - The nineth Serbian Ceramics Society Conference ''Advanced Ceramics and Application'', Belgrade",
title = "Insights into the effect of aluminum oxyhydrates properties on their electrochemical behavior",
pages = "89-89",
url = "https://hdl.handle.net/21.15107/rcub_cer_4781"
}

Novaković, T., Milovanović, B., Pavlović, S., Banković, P.,& Mojović, Z.. (2021). Insights into the effect of aluminum oxyhydrates properties on their electrochemical behavior. in Program and the Book of Abstracts - The nineth Serbian Ceramics Society Conference ''Advanced Ceramics and Application'', Belgrade
Belgrade: Serbian Ceramic Society., 89-89.
https://hdl.handle.net/21.15107/rcub_cer_4781

Novaković T, Milovanović B, Pavlović S, Banković P, Mojović Z. Insights into the effect of aluminum oxyhydrates properties on their electrochemical behavior. in Program and the Book of Abstracts - The nineth Serbian Ceramics Society Conference ''Advanced Ceramics and Application'', Belgrade. 2021;:89-89.
https://hdl.handle.net/21.15107/rcub_cer_4781 .

Novaković, Tanja, Milovanović, Biljana, Pavlović, Stefan, Banković, Predrag, Mojović, Zorica, "Insights into the effect of aluminum oxyhydrates properties on their electrochemical behavior" in Program and the Book of Abstracts - The nineth Serbian Ceramics Society Conference ''Advanced Ceramics and Application'', Belgrade (2021):89-89,
https://hdl.handle.net/21.15107/rcub_cer_4781 .

TY  - CONF
AU  - Ilić, Irena
AU  - Milutinović Nikolić, Aleksandra
AU  - Gržetić, Ivan
AU  - Ajduković, Marija
AU  - Milovanović, Biljana
AU  - Mudrinić, Tihana
AU  - Jović-Jovičić, Nataša
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3841
AB  - Nicotine i.e. (S)-3-(1-methylpyrrolidin-2-yl) pyridine is an alkaloid present in significant quantities in tobacco leaves and can be found in wastewaters as an aftermath of tobacco manufacturing. Natural Wyoming originated montmorillonite (Wy-M) and acid modified montmorillonite (Wy-MA) were impregnated by wetness capillary method using Co(NO3)2 solution. The amount of introduced cobalt corresponded to cation exchange capacity of each sample. The samples were calcinated at 450°C during 6 hours and denoted as Co/Wy-M and Co/Wy-MA. These catalysts were used for nicotine degradation in the presence of Oxone® (2KHSO5∙KHSO4∙K2SO4). The changes in the chemical and phasecomposition of Wy-M, Wy-MA, Co/Wy-M and Co/Wy-MA were monitored using X-ray fluorescence (XRF) and X-ray diffraction (XRD), respectively.The powerful sulfate radicals for nicotine oxidation were generated by activation of Oxone® in the presence of transition metal cation (Co2+) incorporated into the catalysts structure. The process of nicotine oxidation was investigated at 30° C and 50 °C, while thenicotine concentration was monitored using a UV-Vis spectrophotometer at λmax=261 nm. The obtained results showed efficient degradation of stable nicotine molecule in heterogeneous Fenton-like reaction using cobalt impregnated natural and acid modified montmorillonite as catalysts.
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of Abstracts - The Eight Serbian Ceramic Society Conference "Advanced Ceramics and Application", Belgrade
T1  - Cobalt impregnated natural and acid modified montmorilloniteas catalysts in heterogeneous catalytic oxidation of nicotine in the presence of Oxone®
SP  - 42
EP  - 43
UR  - https://hdl.handle.net/21.15107/rcub_cer_3841
ER  - 

@conference{
author = "Ilić, Irena and Milutinović Nikolić, Aleksandra and Gržetić, Ivan and Ajduković, Marija and Milovanović, Biljana and Mudrinić, Tihana and Jović-Jovičić, Nataša",
year = "2019",
abstract = "Nicotine i.e. (S)-3-(1-methylpyrrolidin-2-yl) pyridine is an alkaloid present in significant quantities in tobacco leaves and can be found in wastewaters as an aftermath of tobacco manufacturing. Natural Wyoming originated montmorillonite (Wy-M) and acid modified montmorillonite (Wy-MA) were impregnated by wetness capillary method using Co(NO3)2 solution. The amount of introduced cobalt corresponded to cation exchange capacity of each sample. The samples were calcinated at 450°C during 6 hours and denoted as Co/Wy-M and Co/Wy-MA. These catalysts were used for nicotine degradation in the presence of Oxone® (2KHSO5∙KHSO4∙K2SO4). The changes in the chemical and phasecomposition of Wy-M, Wy-MA, Co/Wy-M and Co/Wy-MA were monitored using X-ray fluorescence (XRF) and X-ray diffraction (XRD), respectively.The powerful sulfate radicals for nicotine oxidation were generated by activation of Oxone® in the presence of transition metal cation (Co2+) incorporated into the catalysts structure. The process of nicotine oxidation was investigated at 30° C and 50 °C, while thenicotine concentration was monitored using a UV-Vis spectrophotometer at λmax=261 nm. The obtained results showed efficient degradation of stable nicotine molecule in heterogeneous Fenton-like reaction using cobalt impregnated natural and acid modified montmorillonite as catalysts.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of Abstracts - The Eight Serbian Ceramic Society Conference "Advanced Ceramics and Application", Belgrade",
title = "Cobalt impregnated natural and acid modified montmorilloniteas catalysts in heterogeneous catalytic oxidation of nicotine in the presence of Oxone®",
pages = "42-43",
url = "https://hdl.handle.net/21.15107/rcub_cer_3841"
}

Ilić, I., Milutinović Nikolić, A., Gržetić, I., Ajduković, M., Milovanović, B., Mudrinić, T.,& Jović-Jovičić, N.. (2019). Cobalt impregnated natural and acid modified montmorilloniteas catalysts in heterogeneous catalytic oxidation of nicotine in the presence of Oxone®. in Program and the Book of Abstracts - The Eight Serbian Ceramic Society Conference "Advanced Ceramics and Application", Belgrade
Belgrade : Serbian Ceramic Society., 42-43.
https://hdl.handle.net/21.15107/rcub_cer_3841

Ilić I, Milutinović Nikolić A, Gržetić I, Ajduković M, Milovanović B, Mudrinić T, Jović-Jovičić N. Cobalt impregnated natural and acid modified montmorilloniteas catalysts in heterogeneous catalytic oxidation of nicotine in the presence of Oxone®. in Program and the Book of Abstracts - The Eight Serbian Ceramic Society Conference "Advanced Ceramics and Application", Belgrade. 2019;:42-43.
https://hdl.handle.net/21.15107/rcub_cer_3841 .

Ilić, Irena, Milutinović Nikolić, Aleksandra, Gržetić, Ivan, Ajduković, Marija, Milovanović, Biljana, Mudrinić, Tihana, Jović-Jovičić, Nataša, "Cobalt impregnated natural and acid modified montmorilloniteas catalysts in heterogeneous catalytic oxidation of nicotine in the presence of Oxone®" in Program and the Book of Abstracts - The Eight Serbian Ceramic Society Conference "Advanced Ceramics and Application", Belgrade (2019):42-43,
https://hdl.handle.net/21.15107/rcub_cer_3841 .

TY  - CONF
AU  - Pavlović, Stefan
AU  - Marinković, Dalibor
AU  - Milovanović, Biljana
AU  - Kostić, Milan
AU  - Gabrovska, Margarita
AU  - Nikolova, Dimitrinka
AU  - Stanković, Miroslav
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3434
AB  - Eggshell based catalysts were synthesized by calcination (600 and 900 ºC, 4 h) of raw and rehydration (RH) modified (RH-temperature of 80 ºC, S/L ratio of 1/5, and RH-time of 6 h) eggshell. After RH-treatment, the sample underwent calcination at 600 ºC, 4 h. Obtained catalysts were characterized by XRD, SEM, N2-physisorption, and Hg-porosimetry, whereas the catalytic activity was analyzed in a batch reactor (reaction temperature of 60 ºC, sunflower oil/methanol molar ratio of 1/12, and catalyst concentration of 4 wt.%). The concentration of fatty acid methyl esters (FAMEs) was determined by HPLC. The reaction has reached equilibrium (FAME > 97%) with rehydrated catalyst for 1.5 h, whereas with catalyst calcined at 900 ºC for 4 h.
PB  - DECHEMA e.V.
C3  - 14th EuropaCat – European Congress on Catalysis “Catalysis without Borders”
T1  - Effects of preparation conditions on the catalytic activity of chicken eggshell catalysts for the transesterification of oils to biodiesel
SP  - 643
EP  - 644
UR  - https://hdl.handle.net/21.15107/rcub_cer_3434
ER  - 

@conference{
author = "Pavlović, Stefan and Marinković, Dalibor and Milovanović, Biljana and Kostić, Milan and Gabrovska, Margarita and Nikolova, Dimitrinka and Stanković, Miroslav",
year = "2019",
abstract = "Eggshell based catalysts were synthesized by calcination (600 and 900 ºC, 4 h) of raw and rehydration (RH) modified (RH-temperature of 80 ºC, S/L ratio of 1/5, and RH-time of 6 h) eggshell. After RH-treatment, the sample underwent calcination at 600 ºC, 4 h. Obtained catalysts were characterized by XRD, SEM, N2-physisorption, and Hg-porosimetry, whereas the catalytic activity was analyzed in a batch reactor (reaction temperature of 60 ºC, sunflower oil/methanol molar ratio of 1/12, and catalyst concentration of 4 wt.%). The concentration of fatty acid methyl esters (FAMEs) was determined by HPLC. The reaction has reached equilibrium (FAME > 97%) with rehydrated catalyst for 1.5 h, whereas with catalyst calcined at 900 ºC for 4 h.",
publisher = "DECHEMA e.V.",
journal = "14th EuropaCat – European Congress on Catalysis “Catalysis without Borders”",
title = "Effects of preparation conditions on the catalytic activity of chicken eggshell catalysts for the transesterification of oils to biodiesel",
pages = "643-644",
url = "https://hdl.handle.net/21.15107/rcub_cer_3434"
}

Pavlović, S., Marinković, D., Milovanović, B., Kostić, M., Gabrovska, M., Nikolova, D.,& Stanković, M.. (2019). Effects of preparation conditions on the catalytic activity of chicken eggshell catalysts for the transesterification of oils to biodiesel. in 14th EuropaCat – European Congress on Catalysis “Catalysis without Borders”
DECHEMA e.V.., 643-644.
https://hdl.handle.net/21.15107/rcub_cer_3434

Pavlović S, Marinković D, Milovanović B, Kostić M, Gabrovska M, Nikolova D, Stanković M. Effects of preparation conditions on the catalytic activity of chicken eggshell catalysts for the transesterification of oils to biodiesel. in 14th EuropaCat – European Congress on Catalysis “Catalysis without Borders”. 2019;:643-644.
https://hdl.handle.net/21.15107/rcub_cer_3434 .

Pavlović, Stefan, Marinković, Dalibor, Milovanović, Biljana, Kostić, Milan, Gabrovska, Margarita, Nikolova, Dimitrinka, Stanković, Miroslav, "Effects of preparation conditions on the catalytic activity of chicken eggshell catalysts for the transesterification of oils to biodiesel" in 14th EuropaCat – European Congress on Catalysis “Catalysis without Borders” (2019):643-644,
https://hdl.handle.net/21.15107/rcub_cer_3434 .

TY  - CONF
AU  - Milovanović, Biljana
AU  - Oljača, Đurđa
AU  - Pavlović, Stefan
AU  - Ostojić, Gordana
AU  - Obrenović, Zoran
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3796
AB  - Removal of some impurities from Bayer liquor, such as zinc compounds, allows obtaining alumina with low content of impurities incorporated in the crystalline structure. Impurities in alumina influence the quality of products obtained from alumina during electrolysis. In this research, the purification method presented in our previous paper was used for the purification of Bayer liquor, from which alumina was produced [1]. Crystallization of Bayer liquor was conducted at 52 °C during 24 h, whereas aluminium hydroxide with specific structural properties was used as the seed. The crystallization product (aluminium hydroxide) was calcined at 950 °C for 2 h with the heating rate of 5 °C min–1. The obtained alumina (Alumina I) is compared with alumina obtained without Bayer liquor purification (alumina from bauxite refinery „Alumina“ l.t.d., Zvornik, B&H – Alumina II). Zinc content is determined by atomic absorption spectroscopy. Structural and morphological properties are characterized by XRD, FT‐IR, N2‐physisorption, and particle size analyzer. Zinc content as ZnO in the initial and purified Bayer liquor was 0.0494 g dm–3 and 0.0057 g dm–3, respectively. Alumina from bauxite refinery contains 0.0260% ZnO, whereas the zinc content in alumina obtained after Bayer liquor purification was 0.016% ZnO. XRD analysis (Figure 1) showed that crystal structure is not destroyed and characteristic lines for both samples are at a 2Theta angle: 34.2, 37.2, 40.7, and 49.8. Bands characteristic for γ‐Al2O3 and α‐Al2O3 in pseudoboehmite structure can be observed at low wavenumbers in the obtained FT‐IR spectra [2]. Specific surface area and average pore diameter are shown in Table 1. These values are similar for both alumina samples.
PB  - Hrvatska: Hrvatsko društvo kemijskih inženjera i tehnologa
(HDKI)
C3  - Book of Abstracts - 26th Croatian Meeting of Chemists and Chemical Engineers with international participation and 4th Symposium Vladimir Prelog
T1  - Alumina production from purified Bayer liquor
T1  - Proizvodnja glinice iz pročišćene Bayerove otopine
SP  - 182
UR  - https://hdl.handle.net/21.15107/rcub_cer_3796
ER  - 

@conference{
author = "Milovanović, Biljana and Oljača, Đurđa and Pavlović, Stefan and Ostojić, Gordana and Obrenović, Zoran",
year = "2019",
abstract = "Removal of some impurities from Bayer liquor, such as zinc compounds, allows obtaining alumina with low content of impurities incorporated in the crystalline structure. Impurities in alumina influence the quality of products obtained from alumina during electrolysis. In this research, the purification method presented in our previous paper was used for the purification of Bayer liquor, from which alumina was produced [1]. Crystallization of Bayer liquor was conducted at 52 °C during 24 h, whereas aluminium hydroxide with specific structural properties was used as the seed. The crystallization product (aluminium hydroxide) was calcined at 950 °C for 2 h with the heating rate of 5 °C min–1. The obtained alumina (Alumina I) is compared with alumina obtained without Bayer liquor purification (alumina from bauxite refinery „Alumina“ l.t.d., Zvornik, B&H – Alumina II). Zinc content is determined by atomic absorption spectroscopy. Structural and morphological properties are characterized by XRD, FT‐IR, N2‐physisorption, and particle size analyzer. Zinc content as ZnO in the initial and purified Bayer liquor was 0.0494 g dm–3 and 0.0057 g dm–3, respectively. Alumina from bauxite refinery contains 0.0260% ZnO, whereas the zinc content in alumina obtained after Bayer liquor purification was 0.016% ZnO. XRD analysis (Figure 1) showed that crystal structure is not destroyed and characteristic lines for both samples are at a 2Theta angle: 34.2, 37.2, 40.7, and 49.8. Bands characteristic for γ‐Al2O3 and α‐Al2O3 in pseudoboehmite structure can be observed at low wavenumbers in the obtained FT‐IR spectra [2]. Specific surface area and average pore diameter are shown in Table 1. These values are similar for both alumina samples.",
publisher = "Hrvatska: Hrvatsko društvo kemijskih inženjera i tehnologa
(HDKI)",
journal = "Book of Abstracts - 26th Croatian Meeting of Chemists and Chemical Engineers with international participation and 4th Symposium Vladimir Prelog",
title = "Alumina production from purified Bayer liquor, Proizvodnja glinice iz pročišćene Bayerove otopine",
pages = "182",
url = "https://hdl.handle.net/21.15107/rcub_cer_3796"
}

Milovanović, B., Oljača, Đ., Pavlović, S., Ostojić, G.,& Obrenović, Z.. (2019). Alumina production from purified Bayer liquor. in Book of Abstracts - 26th Croatian Meeting of Chemists and Chemical Engineers with international participation and 4th Symposium Vladimir Prelog
Hrvatska: Hrvatsko društvo kemijskih inženjera i tehnologa
(HDKI)., 182.
https://hdl.handle.net/21.15107/rcub_cer_3796

Milovanović B, Oljača Đ, Pavlović S, Ostojić G, Obrenović Z. Alumina production from purified Bayer liquor. in Book of Abstracts - 26th Croatian Meeting of Chemists and Chemical Engineers with international participation and 4th Symposium Vladimir Prelog. 2019;:182.
https://hdl.handle.net/21.15107/rcub_cer_3796 .

Milovanović, Biljana, Oljača, Đurđa, Pavlović, Stefan, Ostojić, Gordana, Obrenović, Zoran, "Alumina production from purified Bayer liquor" in Book of Abstracts - 26th Croatian Meeting of Chemists and Chemical Engineers with international participation and 4th Symposium Vladimir Prelog (2019):182,
https://hdl.handle.net/21.15107/rcub_cer_3796 .

TY  - CONF
AU  - Pavlović, Stefan
AU  - Milovanović, Biljana
AU  - Paunović, Anđela
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3779
AB  - Modified highly active CaO catalyst (ESCHC-600) derived from waste chicken eggshells were prepared and used in the transesterification of sunflower oil. Eggshells were subjected to calcination-hydration-calcination (CHC) cycles described in detail previously [1]. After CHC treatments, highly active CaO was obtained, which indicates its great potential for biodiesel synthesis. The transesterification reaction was carried out in a batch reactor at 60 ºC, methanol to oil molar ratio of 12:1, and different catalyst concentrations ranging from 2 to 8 wt%. Fatty acid methyl esters (FAMEs) content was determined by the HPLC analytical technique. The highest triacylglycerols (TAGs) conversion to FAMEs was achieved at a catalyst loading of 4 wt% (Fig. 1a). A further increase in catalyst loading (> 4 wt%) led to a decrease in TAGs conversion. The higher catalyst loadings (6 and 8 wt%) limited mass transfer of the TAGs and reaction products (FAMEs, DAGs and MAGs) due to the higher reaction mixture density and viscosity of the complex multiphase system. Compared to raw eggshell calcined at 900 ºC (ES-900) (Fig. 1b), the synthesized ESCHC-600 catalyst showed a higher activity, which could be attributed to a more favourable pore structure of CHC treated catalyst and better availability of the active sites.
PB  - Belgrade : Serbian Chemical Society
C3  - Book of abstracts - Seventh Conference of the Young Chemists of Serbia
T1  - Modified eggshell catalyst for transesterification of sunflower oil: The effects of catalyst loading on FAMEs content
UR  - https://hdl.handle.net/21.15107/rcub_cer_3779
ER  - 

@conference{
author = "Pavlović, Stefan and Milovanović, Biljana and Paunović, Anđela",
year = "2019",
abstract = "Modified highly active CaO catalyst (ESCHC-600) derived from waste chicken eggshells were prepared and used in the transesterification of sunflower oil. Eggshells were subjected to calcination-hydration-calcination (CHC) cycles described in detail previously [1]. After CHC treatments, highly active CaO was obtained, which indicates its great potential for biodiesel synthesis. The transesterification reaction was carried out in a batch reactor at 60 ºC, methanol to oil molar ratio of 12:1, and different catalyst concentrations ranging from 2 to 8 wt%. Fatty acid methyl esters (FAMEs) content was determined by the HPLC analytical technique. The highest triacylglycerols (TAGs) conversion to FAMEs was achieved at a catalyst loading of 4 wt% (Fig. 1a). A further increase in catalyst loading (> 4 wt%) led to a decrease in TAGs conversion. The higher catalyst loadings (6 and 8 wt%) limited mass transfer of the TAGs and reaction products (FAMEs, DAGs and MAGs) due to the higher reaction mixture density and viscosity of the complex multiphase system. Compared to raw eggshell calcined at 900 ºC (ES-900) (Fig. 1b), the synthesized ESCHC-600 catalyst showed a higher activity, which could be attributed to a more favourable pore structure of CHC treated catalyst and better availability of the active sites.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Book of abstracts - Seventh Conference of the Young Chemists of Serbia",
title = "Modified eggshell catalyst for transesterification of sunflower oil: The effects of catalyst loading on FAMEs content",
url = "https://hdl.handle.net/21.15107/rcub_cer_3779"
}

Pavlović, S., Milovanović, B.,& Paunović, A.. (2019). Modified eggshell catalyst for transesterification of sunflower oil: The effects of catalyst loading on FAMEs content. in Book of abstracts - Seventh Conference of the Young Chemists of Serbia
Belgrade : Serbian Chemical Society..
https://hdl.handle.net/21.15107/rcub_cer_3779

Pavlović S, Milovanović B, Paunović A. Modified eggshell catalyst for transesterification of sunflower oil: The effects of catalyst loading on FAMEs content. in Book of abstracts - Seventh Conference of the Young Chemists of Serbia. 2019;.
https://hdl.handle.net/21.15107/rcub_cer_3779 .

Pavlović, Stefan, Milovanović, Biljana, Paunović, Anđela, "Modified eggshell catalyst for transesterification of sunflower oil: The effects of catalyst loading on FAMEs content" in Book of abstracts - Seventh Conference of the Young Chemists of Serbia (2019),
https://hdl.handle.net/21.15107/rcub_cer_3779 .

TY  - CONF
AU  - Pavlović, Stefan
AU  - Marinković, Dalibor
AU  - Stanković, Miroslav
AU  - Milovanović, Biljana
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2891
AB  - The zeolite from F class coal fly ash (FA) was prepared from alkali fused fly ash
followed by hydrothermal treatment. Sodium water glass obtained from the calcined and
acid activated FA and sodium aluminate were used in zeolitization. Hydrothermal
reaction was performed at 90°C for 4h. The prepared zeolitic material was characterized
by EDX, XRD, FT-IR and Hg-porosimetry. The concentrations of the main components
SiO2, Al2O3, and Na2O in the synthesized material are: 51.45%, 30.01%, and 16.64%,
respectively. The diffraction patterns show that the characteristics lines are at 14.4°,
20.5°, 25.5°, 32.7°, 39°, and 44.5° that are typical for Na-X zeolite. The FT-IR spectra
show that the strongest vibration is at 960 cm-1 (T-O stretch), whereas the vibrations in
the region between 600 and 750 cm-1 are related to tetrahedral atoms in zeolite structure
[1, 2]. The Hg porsimetry measurements show that the porosity of obtained material is
around 62% and the total pore volume is 1,10 cm3/g. Such characteristics of the prepared
zeolitic material allow its use in various catalytic chemical processes for converting
vegetable oil to biofuel including transesterification, deoxygenation, thermal cracking,
catalytic cracking, and hydroprocessing.
PB  - Serbian Chemical Society
C3  - Sixt Conference of the Young Chemists of Serbia
T1  - Preparation of zeolite from coal fly ash as waste raw material
SP  - 99
UR  - https://hdl.handle.net/21.15107/rcub_cer_2891
ER  - 

@conference{
author = "Pavlović, Stefan and Marinković, Dalibor and Stanković, Miroslav and Milovanović, Biljana",
year = "2018",
abstract = "The zeolite from F class coal fly ash (FA) was prepared from alkali fused fly ash
followed by hydrothermal treatment. Sodium water glass obtained from the calcined and
acid activated FA and sodium aluminate were used in zeolitization. Hydrothermal
reaction was performed at 90°C for 4h. The prepared zeolitic material was characterized
by EDX, XRD, FT-IR and Hg-porosimetry. The concentrations of the main components
SiO2, Al2O3, and Na2O in the synthesized material are: 51.45%, 30.01%, and 16.64%,
respectively. The diffraction patterns show that the characteristics lines are at 14.4°,
20.5°, 25.5°, 32.7°, 39°, and 44.5° that are typical for Na-X zeolite. The FT-IR spectra
show that the strongest vibration is at 960 cm-1 (T-O stretch), whereas the vibrations in
the region between 600 and 750 cm-1 are related to tetrahedral atoms in zeolite structure
[1, 2]. The Hg porsimetry measurements show that the porosity of obtained material is
around 62% and the total pore volume is 1,10 cm3/g. Such characteristics of the prepared
zeolitic material allow its use in various catalytic chemical processes for converting
vegetable oil to biofuel including transesterification, deoxygenation, thermal cracking,
catalytic cracking, and hydroprocessing.",
publisher = "Serbian Chemical Society",
journal = "Sixt Conference of the Young Chemists of Serbia",
title = "Preparation of zeolite from coal fly ash as waste raw material",
pages = "99",
url = "https://hdl.handle.net/21.15107/rcub_cer_2891"
}

Pavlović, S., Marinković, D., Stanković, M.,& Milovanović, B.. (2018). Preparation of zeolite from coal fly ash as waste raw material. in Sixt Conference of the Young Chemists of Serbia
Serbian Chemical Society., 99.
https://hdl.handle.net/21.15107/rcub_cer_2891

Pavlović S, Marinković D, Stanković M, Milovanović B. Preparation of zeolite from coal fly ash as waste raw material. in Sixt Conference of the Young Chemists of Serbia. 2018;:99.
https://hdl.handle.net/21.15107/rcub_cer_2891 .

Pavlović, Stefan, Marinković, Dalibor, Stanković, Miroslav, Milovanović, Biljana, "Preparation of zeolite from coal fly ash as waste raw material" in Sixt Conference of the Young Chemists of Serbia (2018):99,
https://hdl.handle.net/21.15107/rcub_cer_2891 .

TY  - CONF
AU  - Oljača, Đurđa
AU  - Milovanović, Biljana
AU  - Pavlović, Stefan
AU  - Smiljanić, Radenko
AU  - Obrenović, Zoran
AU  - Filipović, Radislav
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3771
AB  - The presence of Zn compounds in alumina reduces the current efficiency during electrolysis and quality of obtained metal. The known methods for Zn compounds removal that involves the use of different chemical agents (e.g. sulphide) are uneconomical and not environmentally friendly. In this research, aluminium-hydroxide with specific structural properties (AHSSP) was used as a crystallization agent during purification of Bayer liquor. The specific structural properties of the used aluminium-hydroxide are related with a small particle size (<8μm), small specific surface area (≈3 m2/g), and large pore diameter (≈1μm). Mechanism of Zn removal is based on crystallization phenomenon of aluminium-hydroxide from Bayer liquor where the AHSSP presents crystallization agent (seed). The crystallization process is conducted to a certain Na2O/Al2O3 ratio, which corresponds to a satisfactory aluminium concentration in Bayer liquor. The crystallization process was conducted in laboratory crystallization vessels (2 dm3) equipped with a heater and stirrer. The crystallization temperature was 50±1°C and the concentration of aluminium-hydroxide as crystallization agent (seed) was 15, 20 and 30g/l. The concentration of Al, Na, and Zn in Bayer liquor and solid crystallization product (aluminium hydroxide as seed and aluminium hydroxide from Bayer liquor) was analysed by using ICP-OES (Specto Genesis) and AAS (Shimadzu AA7000). The particle size of the obtained solid crystallization product was analysed by Cilas 1090, laser particle size analyser. The specific surface area was determined by using Gemini VII, whereas the pore structure was analysed by using Mercury intrusion porosimetry (Carlo Erba Porosimeter 2000). The obtained results show that the per cent of removed Zn compounds was above 80 for 2h, whereas Al concentration decreased slightly less than 20% for the same time. Structural analysis is shown, that particle size and pore diameter were increased, whereas the specific surface area was decreased. For this reason, the possibility of using the aluminium-hydroxide as a product of this process, without structural modification, is maximally two times. Keywords: Zn-compounds, crystallization, alumina, and structural properties.
PB  - Association of Technology Engineers of Republic of Srpska
C3  - Proceedings - XII Conference of Chemists, Technologists and Environmentalists of Republic of Srpska
T1  - Zinc removal from Bayer liquor by using aluminium hydroxide with specific structural properties as crystallization agent
SP  - 155
EP  - 158
UR  - https://hdl.handle.net/21.15107/rcub_cer_3771
ER  - 

@conference{
author = "Oljača, Đurđa and Milovanović, Biljana and Pavlović, Stefan and Smiljanić, Radenko and Obrenović, Zoran and Filipović, Radislav",
year = "2018",
abstract = "The presence of Zn compounds in alumina reduces the current efficiency during electrolysis and quality of obtained metal. The known methods for Zn compounds removal that involves the use of different chemical agents (e.g. sulphide) are uneconomical and not environmentally friendly. In this research, aluminium-hydroxide with specific structural properties (AHSSP) was used as a crystallization agent during purification of Bayer liquor. The specific structural properties of the used aluminium-hydroxide are related with a small particle size (<8μm), small specific surface area (≈3 m2/g), and large pore diameter (≈1μm). Mechanism of Zn removal is based on crystallization phenomenon of aluminium-hydroxide from Bayer liquor where the AHSSP presents crystallization agent (seed). The crystallization process is conducted to a certain Na2O/Al2O3 ratio, which corresponds to a satisfactory aluminium concentration in Bayer liquor. The crystallization process was conducted in laboratory crystallization vessels (2 dm3) equipped with a heater and stirrer. The crystallization temperature was 50±1°C and the concentration of aluminium-hydroxide as crystallization agent (seed) was 15, 20 and 30g/l. The concentration of Al, Na, and Zn in Bayer liquor and solid crystallization product (aluminium hydroxide as seed and aluminium hydroxide from Bayer liquor) was analysed by using ICP-OES (Specto Genesis) and AAS (Shimadzu AA7000). The particle size of the obtained solid crystallization product was analysed by Cilas 1090, laser particle size analyser. The specific surface area was determined by using Gemini VII, whereas the pore structure was analysed by using Mercury intrusion porosimetry (Carlo Erba Porosimeter 2000). The obtained results show that the per cent of removed Zn compounds was above 80 for 2h, whereas Al concentration decreased slightly less than 20% for the same time. Structural analysis is shown, that particle size and pore diameter were increased, whereas the specific surface area was decreased. For this reason, the possibility of using the aluminium-hydroxide as a product of this process, without structural modification, is maximally two times. Keywords: Zn-compounds, crystallization, alumina, and structural properties.",
publisher = "Association of Technology Engineers of Republic of Srpska",
journal = "Proceedings - XII Conference of Chemists, Technologists and Environmentalists of Republic of Srpska",
title = "Zinc removal from Bayer liquor by using aluminium hydroxide with specific structural properties as crystallization agent",
pages = "155-158",
url = "https://hdl.handle.net/21.15107/rcub_cer_3771"
}

Oljača, Đ., Milovanović, B., Pavlović, S., Smiljanić, R., Obrenović, Z.,& Filipović, R.. (2018). Zinc removal from Bayer liquor by using aluminium hydroxide with specific structural properties as crystallization agent. in Proceedings - XII Conference of Chemists, Technologists and Environmentalists of Republic of Srpska
Association of Technology Engineers of Republic of Srpska., 155-158.
https://hdl.handle.net/21.15107/rcub_cer_3771

Oljača Đ, Milovanović B, Pavlović S, Smiljanić R, Obrenović Z, Filipović R. Zinc removal from Bayer liquor by using aluminium hydroxide with specific structural properties as crystallization agent. in Proceedings - XII Conference of Chemists, Technologists and Environmentalists of Republic of Srpska. 2018;:155-158.
https://hdl.handle.net/21.15107/rcub_cer_3771 .

Oljača, Đurđa, Milovanović, Biljana, Pavlović, Stefan, Smiljanić, Radenko, Obrenović, Zoran, Filipović, Radislav, "Zinc removal from Bayer liquor by using aluminium hydroxide with specific structural properties as crystallization agent" in Proceedings - XII Conference of Chemists, Technologists and Environmentalists of Republic of Srpska (2018):155-158,
https://hdl.handle.net/21.15107/rcub_cer_3771 .

TY  - JOUR
AU  - Janković, Mladen
AU  - Obrenović, Zoran
AU  - Filipović, Radislav
AU  - Ostojić, Željko
AU  - Došić, Aleksandar
AU  - Milovanović, Biljana
AU  - Tomašević, Dragana
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3777
AB  - For more than three decades 4A zeolite has been an irreplaceable ingredient of powder
detergents, but there is still striving to it’s improvement in order to meet the ever more stringent
market and environmental demands.Alumina d.o.o., as one of the world-renowned producers of
this zeolite, tends to meet these requirements, and one of the latest examples is the work on the
production of zeolite 4A with increased adsorption of surface active substances, and the testing of
parameters for the synthesis of such a zeolite as well as its characterization is the subject of this
paper. The zeolite synthesis were performed to examine the effect of the Na2O concentration in
the reaction system, as well as the crystallization time on thecharacteristics of detergent zeolite,
namely:the adsorption of dibutylphthalate (DBP), the mean particle diameter, and the ion
exchange capacity. The additional characterization of the samples was performed by XRD and
FTIR instrumental methods.
It’s shown that the conditions examined have a significant effect on the characteristics of the
synthesized powders. In general, at all crystallization times, adsorption of DBP, as well as the
mean diameter, increases with the increase in Na2O concentration, while the ion exchange
capacity decreases,and it is very important to find the right conditions in which all the parameters
will be satisfactory.The influence of the crystallization time is not significantly pronounced when
adsorption is concerned, but it is on the other characteristics of zeolite.XRD diffractograms and
FT-IR spectroscopy showed the effect of reaction conditions on the crystallinity of the synthesized
powders, and the relationship between the crystallinity and other characteristics of 4A zeolite.
AB  - Zeolit 4A sada već više od tri decenije nezamenljiv je sastojak praškastih deterdženata, ali se i dalje teži njegovom usavršavanju kako bi se što uspešnije ispunili sve strožiji tržišni i ekološki zahtevi. Kompanija Alumina d.o.o. kao jedan od svetski priznatih proizvođača ovog zeolita teži ispunjavanju tih zahteva. Predmet ovog rada je upravo ispitivanje parametara za sintezu takvog zeolita kao i njegova karakterizacija. Sinteze zeolita izvođene su tako da se ispita uticaj koncentracije Na2O u reakcionom sistemu, kao i vremena kristalizacije na karakteristike deterdžentskog zeolita, i to adsorpciju dibutilftalata (DBP), srednji prečnik čestice (Ds50) i jonoizmenjivački kappacitet (JIK).Dodatna karakterizacija uzoraka izvršena je XRD i FTIR instrumentalnim metodama. Pokazalo se da ispitivani uslovi imaju značajan uticaj na karakteristike sintetisanih prahova. Generalno, pri svim vremenima kristalizacije, adsorpcija DBP raste sa porastom koncentracije Na2O, kao i srednji prečnik, dok JIK opada, te je jako bitno pronaći uslove u kojima će svi parametri biti zadovoljavajući. Uticaj vremena nije značajno izražen kada je adsorpcija u pitanju, ali jeste na ostale karakteristike zeolita. XRD difraktogramii FT-IR spektroskopija pokazali su uticaj reakcionih uslova na kristaliničnost, te vezu između kristaliničnosti i drugih karakteristika 4A zeolita.
PB  - Inženjersko društvo za koroziju
T2  - Zaštita materijala
T1  - Influence of process parameters on properties of the 4a zeolite with X-ray and FT-IR instrumental methods characterization
T1  - Uticaj procesnih parametara na osobine 4a zeolita uz karakterizaciju X-ray i FT-IR instrumentalnim metodama
VL  - 59
IS  - 3
SP  - 401
EP  - 409
DO  - 10.5937/ZasMat1803401J
ER  - 

@article{
author = "Janković, Mladen and Obrenović, Zoran and Filipović, Radislav and Ostojić, Željko and Došić, Aleksandar and Milovanović, Biljana and Tomašević, Dragana",
year = "2018",
abstract = "For more than three decades 4A zeolite has been an irreplaceable ingredient of powder
detergents, but there is still striving to it’s improvement in order to meet the ever more stringent
market and environmental demands.Alumina d.o.o., as one of the world-renowned producers of
this zeolite, tends to meet these requirements, and one of the latest examples is the work on the
production of zeolite 4A with increased adsorption of surface active substances, and the testing of
parameters for the synthesis of such a zeolite as well as its characterization is the subject of this
paper. The zeolite synthesis were performed to examine the effect of the Na2O concentration in
the reaction system, as well as the crystallization time on thecharacteristics of detergent zeolite,
namely:the adsorption of dibutylphthalate (DBP), the mean particle diameter, and the ion
exchange capacity. The additional characterization of the samples was performed by XRD and
FTIR instrumental methods.
It’s shown that the conditions examined have a significant effect on the characteristics of the
synthesized powders. In general, at all crystallization times, adsorption of DBP, as well as the
mean diameter, increases with the increase in Na2O concentration, while the ion exchange
capacity decreases,and it is very important to find the right conditions in which all the parameters
will be satisfactory.The influence of the crystallization time is not significantly pronounced when
adsorption is concerned, but it is on the other characteristics of zeolite.XRD diffractograms and
FT-IR spectroscopy showed the effect of reaction conditions on the crystallinity of the synthesized
powders, and the relationship between the crystallinity and other characteristics of 4A zeolite., Zeolit 4A sada već više od tri decenije nezamenljiv je sastojak praškastih deterdženata, ali se i dalje teži njegovom usavršavanju kako bi se što uspešnije ispunili sve strožiji tržišni i ekološki zahtevi. Kompanija Alumina d.o.o. kao jedan od svetski priznatih proizvođača ovog zeolita teži ispunjavanju tih zahteva. Predmet ovog rada je upravo ispitivanje parametara za sintezu takvog zeolita kao i njegova karakterizacija. Sinteze zeolita izvođene su tako da se ispita uticaj koncentracije Na2O u reakcionom sistemu, kao i vremena kristalizacije na karakteristike deterdžentskog zeolita, i to adsorpciju dibutilftalata (DBP), srednji prečnik čestice (Ds50) i jonoizmenjivački kappacitet (JIK).Dodatna karakterizacija uzoraka izvršena je XRD i FTIR instrumentalnim metodama. Pokazalo se da ispitivani uslovi imaju značajan uticaj na karakteristike sintetisanih prahova. Generalno, pri svim vremenima kristalizacije, adsorpcija DBP raste sa porastom koncentracije Na2O, kao i srednji prečnik, dok JIK opada, te je jako bitno pronaći uslove u kojima će svi parametri biti zadovoljavajući. Uticaj vremena nije značajno izražen kada je adsorpcija u pitanju, ali jeste na ostale karakteristike zeolita. XRD difraktogramii FT-IR spektroskopija pokazali su uticaj reakcionih uslova na kristaliničnost, te vezu između kristaliničnosti i drugih karakteristika 4A zeolita.",
publisher = "Inženjersko društvo za koroziju",
journal = "Zaštita materijala",
title = "Influence of process parameters on properties of the 4a zeolite with X-ray and FT-IR instrumental methods characterization, Uticaj procesnih parametara na osobine 4a zeolita uz karakterizaciju X-ray i FT-IR instrumentalnim metodama",
volume = "59",
number = "3",
pages = "401-409",
doi = "10.5937/ZasMat1803401J"
}

Janković, M., Obrenović, Z., Filipović, R., Ostojić, Ž., Došić, A., Milovanović, B.,& Tomašević, D.. (2018). Influence of process parameters on properties of the 4a zeolite with X-ray and FT-IR instrumental methods characterization. in Zaštita materijala
Inženjersko društvo za koroziju., 59(3), 401-409.
https://doi.org/10.5937/ZasMat1803401J

Janković M, Obrenović Z, Filipović R, Ostojić Ž, Došić A, Milovanović B, Tomašević D. Influence of process parameters on properties of the 4a zeolite with X-ray and FT-IR instrumental methods characterization. in Zaštita materijala. 2018;59(3):401-409.
doi:10.5937/ZasMat1803401J .

Janković, Mladen, Obrenović, Zoran, Filipović, Radislav, Ostojić, Željko, Došić, Aleksandar, Milovanović, Biljana, Tomašević, Dragana, "Influence of process parameters on properties of the 4a zeolite with X-ray and FT-IR instrumental methods characterization" in Zaštita materijala, 59, no. 3 (2018):401-409,
https://doi.org/10.5937/ZasMat1803401J . .