TY  - JOUR
AU  - Mojović, Zorica
AU  - Jović-Jovičić, Nataša
AU  - Banković, Predrag
AU  - Žunić, Marija
AU  - Abu Rabi-Stanković, Andjela S.
AU  - Milutinović Nikolić, Aleksandra
AU  - Jovanović, Dušan M.
PY  - 2011
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/840
AB  - Bentonite was modified by the exchange of inorganic cations with hexadecyl trimethylammonium, dodecyl trimethylammonium or tetramethylammonium cation. The obtained materials were characterized by physisorption of nitrogen and X-ray diffraction analysis. Multisweep cyclic voltammetry was applied to analyze phenol response on different organo bentonite-based electrodes. The aim of the investigation was to determine the influence of the type of modifying agent on the electrochemical performance of the investigated electrodes. All electrodes exhibited similar electrochemical behavior but with different intensities of the electrochemical response and Tafel slopes. The difference in Tafel slopes reflected different level of involvement of pores in the phenol electrooxidation.
PB  - Elsevier
T2  - Applied Clay Science
T1  - Electrooxidation of phenol on different organo bentonite-based electrodes
VL  - 53
IS  - 2
SP  - 331
EP  - 335
DO  - 10.1016/j.clay.2010.12.008
ER  - 

@article{
author = "Mojović, Zorica and Jović-Jovičić, Nataša and Banković, Predrag and Žunić, Marija and Abu Rabi-Stanković, Andjela S. and Milutinović Nikolić, Aleksandra and Jovanović, Dušan M.",
year = "2011",
abstract = "Bentonite was modified by the exchange of inorganic cations with hexadecyl trimethylammonium, dodecyl trimethylammonium or tetramethylammonium cation. The obtained materials were characterized by physisorption of nitrogen and X-ray diffraction analysis. Multisweep cyclic voltammetry was applied to analyze phenol response on different organo bentonite-based electrodes. The aim of the investigation was to determine the influence of the type of modifying agent on the electrochemical performance of the investigated electrodes. All electrodes exhibited similar electrochemical behavior but with different intensities of the electrochemical response and Tafel slopes. The difference in Tafel slopes reflected different level of involvement of pores in the phenol electrooxidation.",
publisher = "Elsevier",
journal = "Applied Clay Science",
title = "Electrooxidation of phenol on different organo bentonite-based electrodes",
volume = "53",
number = "2",
pages = "331-335",
doi = "10.1016/j.clay.2010.12.008"
}

Mojović, Z., Jović-Jovičić, N., Banković, P., Žunić, M., Abu Rabi-Stanković, A. S., Milutinović Nikolić, A.,& Jovanović, D. M.. (2011). Electrooxidation of phenol on different organo bentonite-based electrodes. in Applied Clay Science
Elsevier., 53(2), 331-335.
https://doi.org/10.1016/j.clay.2010.12.008

Mojović Z, Jović-Jovičić N, Banković P, Žunić M, Abu Rabi-Stanković AS, Milutinović Nikolić A, Jovanović DM. Electrooxidation of phenol on different organo bentonite-based electrodes. in Applied Clay Science. 2011;53(2):331-335.
doi:10.1016/j.clay.2010.12.008 .

Mojović, Zorica, Jović-Jovičić, Nataša, Banković, Predrag, Žunić, Marija, Abu Rabi-Stanković, Andjela S., Milutinović Nikolić, Aleksandra, Jovanović, Dušan M., "Electrooxidation of phenol on different organo bentonite-based electrodes" in Applied Clay Science, 53, no. 2 (2011):331-335,
https://doi.org/10.1016/j.clay.2010.12.008 . .

TY  - JOUR
AU  - Ostojić, Bojana
AU  - Bunker, P. R.
AU  - Schwerdtfeger, Peter
AU  - Assadollahzadeh, B.
AU  - Jensen, Per
PY  - 2011
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/906
AB  - The present study of MgOMg is a continuation of our theoretical work on Group 2 M2O hypermetallic oxides. Previous ab initio calculations have shown that MgOMg has a linear (1)Sigma(+)(g) ground electronic state and a very low lying first excited triplet electronic state that is also linear; the triplet state has (3)Sigma(+)(u) symmetry. No gas phase spectrum of this molecule has been assigned, and here we simulate the infrared absorption spectrum for both states. We calculate the three-dimensional potential energy surface, and the electric dipole moment surfaces, of each of the two states using a multireference configuration interaction (MRCISD) approach based on full-valence complete active space self-consistent field (FV-CASSCF) wavefunctions with a cc-pCVQZ basis set. A variational MORBID calculation using our potential energy and dipole moment surfaces is performed to determine rovibrational term values and to simulate the infrared absorption spectrum of the two states. We also calculate the dipole polarizability of both states at their equilibrium geometry in order to assist in the interpretation of future beam deflection experiments. Finally, in order to assist in the analysis of the electronic spectrum, we calculate the vertical excitation energies, and electric dipole transition matrix elements, for six excited singlet states and five excited triplet states using the state-average full valence CASSCF-MRCISD/aug-cc-pCVQZ procedure.
PB  - Royal Soc Chemistry, Cambridge
T2  - Physical Chemistry Chemical Physics
T1  - The predicted spectrum of the hypermetallic molecule MgOMg
VL  - 13
IS  - 16
SP  - 7546
EP  - 7553
DO  - 10.1039/c0cp02996c
ER  - 

@article{
author = "Ostojić, Bojana and Bunker, P. R. and Schwerdtfeger, Peter and Assadollahzadeh, B. and Jensen, Per",
year = "2011",
abstract = "The present study of MgOMg is a continuation of our theoretical work on Group 2 M2O hypermetallic oxides. Previous ab initio calculations have shown that MgOMg has a linear (1)Sigma(+)(g) ground electronic state and a very low lying first excited triplet electronic state that is also linear; the triplet state has (3)Sigma(+)(u) symmetry. No gas phase spectrum of this molecule has been assigned, and here we simulate the infrared absorption spectrum for both states. We calculate the three-dimensional potential energy surface, and the electric dipole moment surfaces, of each of the two states using a multireference configuration interaction (MRCISD) approach based on full-valence complete active space self-consistent field (FV-CASSCF) wavefunctions with a cc-pCVQZ basis set. A variational MORBID calculation using our potential energy and dipole moment surfaces is performed to determine rovibrational term values and to simulate the infrared absorption spectrum of the two states. We also calculate the dipole polarizability of both states at their equilibrium geometry in order to assist in the interpretation of future beam deflection experiments. Finally, in order to assist in the analysis of the electronic spectrum, we calculate the vertical excitation energies, and electric dipole transition matrix elements, for six excited singlet states and five excited triplet states using the state-average full valence CASSCF-MRCISD/aug-cc-pCVQZ procedure.",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "Physical Chemistry Chemical Physics",
title = "The predicted spectrum of the hypermetallic molecule MgOMg",
volume = "13",
number = "16",
pages = "7546-7553",
doi = "10.1039/c0cp02996c"
}

Ostojić, B., Bunker, P. R., Schwerdtfeger, P., Assadollahzadeh, B.,& Jensen, P.. (2011). The predicted spectrum of the hypermetallic molecule MgOMg. in Physical Chemistry Chemical Physics
Royal Soc Chemistry, Cambridge., 13(16), 7546-7553.
https://doi.org/10.1039/c0cp02996c

Ostojić B, Bunker PR, Schwerdtfeger P, Assadollahzadeh B, Jensen P. The predicted spectrum of the hypermetallic molecule MgOMg. in Physical Chemistry Chemical Physics. 2011;13(16):7546-7553.
doi:10.1039/c0cp02996c .

Ostojić, Bojana, Bunker, P. R., Schwerdtfeger, Peter, Assadollahzadeh, B., Jensen, Per, "The predicted spectrum of the hypermetallic molecule MgOMg" in Physical Chemistry Chemical Physics, 13, no. 16 (2011):7546-7553,
https://doi.org/10.1039/c0cp02996c . .

TY  - JOUR
AU  - Rožić, Ljiljana
AU  - Grbić, Boško
AU  - Radić, Nenad
AU  - Petrović, Srđan
AU  - Novaković, Tatjana
AU  - Vuković, Zorica
AU  - Nedić, Zoran
PY  - 2011
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/772
AB  - In the present study, the effect of 12-tungstophosphoric acid (HPW) immobilisation on the catalytic activity of H(3)PW(12)O(40)/mesoporous acid-activated bentonite catalysts (AAB) was investigated. The catalysts were characterised by XRD, IR, SEM and BET, and the activity of acid-activated bentonite catalysts with various loadings of HPW were studied in the conversion of vapour-phase 2-propanol. The results indicated that the conversion of 2-propanol increased substantially as the temperature increased from 343 K to 553 K. Alternatively, the conversion and selectivity of the reaction increased with an increase in the HPW concentration. Moreover, the proposed catalysts enhanced the oxidation of 2-propanol to acetone and suppressed the acid-catalysed dehydration of propanol to propylene.
PB  - Elsevier
T2  - Applied Clay Science
T1  - Mesoporous 12-tungstophosphoric acid/activated bentonite catalysts for oxidation of 2-propanol
VL  - 53
IS  - 2
SP  - 151
EP  - 156
DO  - 10.1016/j.clay.2010.09.017
ER  - 

@article{
author = "Rožić, Ljiljana and Grbić, Boško and Radić, Nenad and Petrović, Srđan and Novaković, Tatjana and Vuković, Zorica and Nedić, Zoran",
year = "2011",
abstract = "In the present study, the effect of 12-tungstophosphoric acid (HPW) immobilisation on the catalytic activity of H(3)PW(12)O(40)/mesoporous acid-activated bentonite catalysts (AAB) was investigated. The catalysts were characterised by XRD, IR, SEM and BET, and the activity of acid-activated bentonite catalysts with various loadings of HPW were studied in the conversion of vapour-phase 2-propanol. The results indicated that the conversion of 2-propanol increased substantially as the temperature increased from 343 K to 553 K. Alternatively, the conversion and selectivity of the reaction increased with an increase in the HPW concentration. Moreover, the proposed catalysts enhanced the oxidation of 2-propanol to acetone and suppressed the acid-catalysed dehydration of propanol to propylene.",
publisher = "Elsevier",
journal = "Applied Clay Science",
title = "Mesoporous 12-tungstophosphoric acid/activated bentonite catalysts for oxidation of 2-propanol",
volume = "53",
number = "2",
pages = "151-156",
doi = "10.1016/j.clay.2010.09.017"
}

Rožić, L., Grbić, B., Radić, N., Petrović, S., Novaković, T., Vuković, Z.,& Nedić, Z.. (2011). Mesoporous 12-tungstophosphoric acid/activated bentonite catalysts for oxidation of 2-propanol. in Applied Clay Science
Elsevier., 53(2), 151-156.
https://doi.org/10.1016/j.clay.2010.09.017

Rožić L, Grbić B, Radić N, Petrović S, Novaković T, Vuković Z, Nedić Z. Mesoporous 12-tungstophosphoric acid/activated bentonite catalysts for oxidation of 2-propanol. in Applied Clay Science. 2011;53(2):151-156.
doi:10.1016/j.clay.2010.09.017 .

Rožić, Ljiljana, Grbić, Boško, Radić, Nenad, Petrović, Srđan, Novaković, Tatjana, Vuković, Zorica, Nedić, Zoran, "Mesoporous 12-tungstophosphoric acid/activated bentonite catalysts for oxidation of 2-propanol" in Applied Clay Science, 53, no. 2 (2011):151-156,
https://doi.org/10.1016/j.clay.2010.09.017 . .

TY  - CONF
AU  - Jović-Jovičić, Nataša
AU  - Žunić, Marija
AU  - Banković, Predrag
AU  - Mojović, Zorica
AU  - Milutinović Nikolić, Aleksandra
AU  - Dojčinović, Biljana
AU  - Gržetić, Ivan
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6637
AB  - Quantitative substitution of the interlayer cations of smectite by hexadecyl trimethylammonium ions (HDTMA) was performed in order to prepare adsorbent able to simultaneously adsorb toxic metal cations and organic pollutants. The adsorption of Acid Yellow 99 textile dye and Pb2+ ion from their single solutions and mixture was performed. Kinetic data of adsorption were well represented by pseudo-second-order kinetic model for all investigated adsorption systems.
PB  - Society of Physical Chemists of Serbia
C3  - Proceedings - X International Conference on fundamental and applied aspects of Physical chemistry, 21-24 September 2010, Belgrade
T1  - Kinetics of adsorption of mixed pollutants by organobentonite
VL  - I
SP  - 173
EP  - 175
UR  - https://hdl.handle.net/21.15107/rcub_cer_6637
ER  - 

@conference{
author = "Jović-Jovičić, Nataša and Žunić, Marija and Banković, Predrag and Mojović, Zorica and Milutinović Nikolić, Aleksandra and Dojčinović, Biljana and Gržetić, Ivan",
year = "2010",
abstract = "Quantitative substitution of the interlayer cations of smectite by hexadecyl trimethylammonium ions (HDTMA) was performed in order to prepare adsorbent able to simultaneously adsorb toxic metal cations and organic pollutants. The adsorption of Acid Yellow 99 textile dye and Pb2+ ion from their single solutions and mixture was performed. Kinetic data of adsorption were well represented by pseudo-second-order kinetic model for all investigated adsorption systems.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Proceedings - X International Conference on fundamental and applied aspects of Physical chemistry, 21-24 September 2010, Belgrade",
title = "Kinetics of adsorption of mixed pollutants by organobentonite",
volume = "I",
pages = "173-175",
url = "https://hdl.handle.net/21.15107/rcub_cer_6637"
}

Jović-Jovičić, N., Žunić, M., Banković, P., Mojović, Z., Milutinović Nikolić, A., Dojčinović, B.,& Gržetić, I.. (2010). Kinetics of adsorption of mixed pollutants by organobentonite. in Proceedings - X International Conference on fundamental and applied aspects of Physical chemistry, 21-24 September 2010, Belgrade
Society of Physical Chemists of Serbia., I, 173-175.
https://hdl.handle.net/21.15107/rcub_cer_6637

Jović-Jovičić N, Žunić M, Banković P, Mojović Z, Milutinović Nikolić A, Dojčinović B, Gržetić I. Kinetics of adsorption of mixed pollutants by organobentonite. in Proceedings - X International Conference on fundamental and applied aspects of Physical chemistry, 21-24 September 2010, Belgrade. 2010;I:173-175.
https://hdl.handle.net/21.15107/rcub_cer_6637 .

Jović-Jovičić, Nataša, Žunić, Marija, Banković, Predrag, Mojović, Zorica, Milutinović Nikolić, Aleksandra, Dojčinović, Biljana, Gržetić, Ivan, "Kinetics of adsorption of mixed pollutants by organobentonite" in Proceedings - X International Conference on fundamental and applied aspects of Physical chemistry, 21-24 September 2010, Belgrade, I (2010):173-175,
https://hdl.handle.net/21.15107/rcub_cer_6637 .

TY  - CONF
AU  - Banković, Predrag
AU  - Milutinović Nikolić, Aleksandra
AU  - Mojović, Zorica
AU  - Jović-Jovičić, Nataša
AU  - Žunić, Marija
AU  - Dondur, Vera
AU  - Jovanović, Dušan
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6684
AB  - Al,Fe-pillared clays (PILCs) have shown good performance in catalytic wet 
peroxide oxidation (CWPO) of organic pollutants in water. They have predominantly 
been tested in the degradation of phenol. There are seldom reports on their use in 
the degradation of other organic pollutants such as toluene and dyes. In this 
work a series of Al,Fe–PILCs with different Fe3+ content was synthesized and 
characterized. Their catalytic performance was studied in the CWPO of food dye 
tartrazine used as a model compound. Degree of decolorization of tartrazine 
containing aqueous solution was monitored in relation to different parameters such 
as Fe3+ content and temperature.
PB  - Novosibirsk, Russia : Boreskov Institute of Catalysis SB RAS
C3  - XIX International Conference on Chemical Reactors "CHEMREACTOR-19", Abstracts, September 5-9, Novosibirsk
T1  - Al, Fe-pillared clays in catalytic decolorization of dye containing water
SP  - 450
EP  - 451
UR  - https://hdl.handle.net/21.15107/rcub_cer_6684
ER  - 

@conference{
author = "Banković, Predrag and Milutinović Nikolić, Aleksandra and Mojović, Zorica and Jović-Jovičić, Nataša and Žunić, Marija and Dondur, Vera and Jovanović, Dušan",
year = "2010",
abstract = "Al,Fe-pillared clays (PILCs) have shown good performance in catalytic wet 
peroxide oxidation (CWPO) of organic pollutants in water. They have predominantly 
been tested in the degradation of phenol. There are seldom reports on their use in 
the degradation of other organic pollutants such as toluene and dyes. In this 
work a series of Al,Fe–PILCs with different Fe3+ content was synthesized and 
characterized. Their catalytic performance was studied in the CWPO of food dye 
tartrazine used as a model compound. Degree of decolorization of tartrazine 
containing aqueous solution was monitored in relation to different parameters such 
as Fe3+ content and temperature.",
publisher = "Novosibirsk, Russia : Boreskov Institute of Catalysis SB RAS",
journal = "XIX International Conference on Chemical Reactors "CHEMREACTOR-19", Abstracts, September 5-9, Novosibirsk",
title = "Al, Fe-pillared clays in catalytic decolorization of dye containing water",
pages = "450-451",
url = "https://hdl.handle.net/21.15107/rcub_cer_6684"
}

Banković, P., Milutinović Nikolić, A., Mojović, Z., Jović-Jovičić, N., Žunić, M., Dondur, V.,& Jovanović, D.. (2010). Al, Fe-pillared clays in catalytic decolorization of dye containing water. in XIX International Conference on Chemical Reactors "CHEMREACTOR-19", Abstracts, September 5-9, Novosibirsk
Novosibirsk, Russia : Boreskov Institute of Catalysis SB RAS., 450-451.
https://hdl.handle.net/21.15107/rcub_cer_6684

Banković P, Milutinović Nikolić A, Mojović Z, Jović-Jovičić N, Žunić M, Dondur V, Jovanović D. Al, Fe-pillared clays in catalytic decolorization of dye containing water. in XIX International Conference on Chemical Reactors "CHEMREACTOR-19", Abstracts, September 5-9, Novosibirsk. 2010;:450-451.
https://hdl.handle.net/21.15107/rcub_cer_6684 .

Banković, Predrag, Milutinović Nikolić, Aleksandra, Mojović, Zorica, Jović-Jovičić, Nataša, Žunić, Marija, Dondur, Vera, Jovanović, Dušan, "Al, Fe-pillared clays in catalytic decolorization of dye containing water" in XIX International Conference on Chemical Reactors "CHEMREACTOR-19", Abstracts, September 5-9, Novosibirsk (2010):450-451,
https://hdl.handle.net/21.15107/rcub_cer_6684 .

TY  - JOUR
AU  - Mojović, Miloš
AU  - Dakovic, Marko
AU  - Omerasevic, Mia
AU  - Mojović, Zorica
AU  - Banković, Predrag
AU  - Milutinović Nikolić, Aleksandra
AU  - Jovanović, Dušan M.
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/648
AB  - The increased use of imaging techniques in diagnostic studies, such as MRI, has contributed to the development of the wide range of new materials which could be successfully used as image improving agents. However, there is a lack of such substances in the area of gastrointestinal tract MRI. Many of the traditionally popular relaxation altering agents show poor results and disadvantages provoking black bowel, side effects of diarrhea and the presence of artifacts arising from clumping. Paramagnetic species seem to be potentially suitable agents for these studies, but contrast opacification has been reported and less than 60% of the gastrointestinal tract magnetic resonance scans showed improved delineation of abdominal pathologies. The new solution has been proposed as zeolites or smectite clays (hectorite and montmorillonite) enclosing of paramagnetic metal ions obtained by ion-exchange methods. However, such materials have problems of leakage of paramagnetic ions causing the appearance of the various side-effects. In this study we show that Co(+2) and Dy(+3) paramagnetic-pillared bentonites could be successfully used as MRI digestive tract non-leaching contrast agents, altering the longitudinal and transverse relaxation times of fluids in contact with the clay minerals.
PB  - World Scientific Publ Co Pte Ltd, Singapore
T2  - International Journal of Modern Physics B
T1  - The paramagnetic pillared bentonites as digestive tract mri contrast agents
VL  - 24
IS  - 6-7
SP  - 780
EP  - 787
DO  - 10.1142/S0217979210064411
ER  - 

@article{
author = "Mojović, Miloš and Dakovic, Marko and Omerasevic, Mia and Mojović, Zorica and Banković, Predrag and Milutinović Nikolić, Aleksandra and Jovanović, Dušan M.",
year = "2010",
abstract = "The increased use of imaging techniques in diagnostic studies, such as MRI, has contributed to the development of the wide range of new materials which could be successfully used as image improving agents. However, there is a lack of such substances in the area of gastrointestinal tract MRI. Many of the traditionally popular relaxation altering agents show poor results and disadvantages provoking black bowel, side effects of diarrhea and the presence of artifacts arising from clumping. Paramagnetic species seem to be potentially suitable agents for these studies, but contrast opacification has been reported and less than 60% of the gastrointestinal tract magnetic resonance scans showed improved delineation of abdominal pathologies. The new solution has been proposed as zeolites or smectite clays (hectorite and montmorillonite) enclosing of paramagnetic metal ions obtained by ion-exchange methods. However, such materials have problems of leakage of paramagnetic ions causing the appearance of the various side-effects. In this study we show that Co(+2) and Dy(+3) paramagnetic-pillared bentonites could be successfully used as MRI digestive tract non-leaching contrast agents, altering the longitudinal and transverse relaxation times of fluids in contact with the clay minerals.",
publisher = "World Scientific Publ Co Pte Ltd, Singapore",
journal = "International Journal of Modern Physics B",
title = "The paramagnetic pillared bentonites as digestive tract mri contrast agents",
volume = "24",
number = "6-7",
pages = "780-787",
doi = "10.1142/S0217979210064411"
}

Mojović, M., Dakovic, M., Omerasevic, M., Mojović, Z., Banković, P., Milutinović Nikolić, A.,& Jovanović, D. M.. (2010). The paramagnetic pillared bentonites as digestive tract mri contrast agents. in International Journal of Modern Physics B
World Scientific Publ Co Pte Ltd, Singapore., 24(6-7), 780-787.
https://doi.org/10.1142/S0217979210064411

Mojović M, Dakovic M, Omerasevic M, Mojović Z, Banković P, Milutinović Nikolić A, Jovanović DM. The paramagnetic pillared bentonites as digestive tract mri contrast agents. in International Journal of Modern Physics B. 2010;24(6-7):780-787.
doi:10.1142/S0217979210064411 .

Mojović, Miloš, Dakovic, Marko, Omerasevic, Mia, Mojović, Zorica, Banković, Predrag, Milutinović Nikolić, Aleksandra, Jovanović, Dušan M., "The paramagnetic pillared bentonites as digestive tract mri contrast agents" in International Journal of Modern Physics B, 24, no. 6-7 (2010):780-787,
https://doi.org/10.1142/S0217979210064411 . .

TY  - JOUR
AU  - Mojović, Miloš
AU  - Dakovic, Marko
AU  - Banković, Predrag
AU  - Mojović, Zorica
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/652
AB  - The availability of sophisticated diagnostic methods such as MRI has contributed to the increased use of imaging technologies in therapy and diagnostic studies. However, gastrointestinal tract MRI generally shows poor results because of the lack of suitable contrast agents. The iron oxide is traditionally popular material for MRI gastrointestinal studies because of its well-known superparamagnetic properties. On the other hand, it has many disadvantages which include black bowel, side effects of diarrhea and, from an important analytical standpoint, the presence of artifacts arising from clumping. When paramagnetic iron concentrates, it may become ferromagnetic, drastically altering its imaging properties. Other paramagnetic species, represented by gadolinium, also seem to be potentially suitable agents for these studies. Nevertheless, this metal itself cannot be used in humans because of its toxic properties. Therefore, there is clearly a need for orally effective, well tolerated agents that can be used in humans for digestive imaging studies. This MRI contrast should be useful for visualizing the anatomy of the digestive tract and particularly to differentiate between normal and pathological states, such as tumors. The solution has been proposed as zeolites or smectites (hectorite and montmorillonite) enclosing of paramagnetic metal ions obtained by ion-exchange methods. However, such materials could have problems of leakage of paramagnetic ions causing the appearance of the number side-effects. We propose the usage of the pillaring method for paramagnetic metal encapsulation in bentonites. By that way, paramagnetic cations like Fe(+3), Mn(+2) and Gd(+3) are introduced between clay mineral layers as polyoxo cations. After calcination, these polyoxo cations grow to be pillars (oxides of these metals) which are incorporated into the clay mineral matrix which prevents ion-leaching and dangerous side-effects. In this study we show that paramagnetic-pillared bentonites could be successfully used as MRI digestive tract non-leaching contrast agents, altering the longitudinal relaxation times of fluids in contact with the clay minerals.
PB  - Elsevier
T2  - Applied Clay Science
T1  - Paramagnetic pillared bentonites - The new digestive tract MRI contrast agents
VL  - 48
IS  - 1-2
SP  - 191
EP  - 194
DO  - 10.1016/j.clay.2009.11.041
ER  - 

@article{
author = "Mojović, Miloš and Dakovic, Marko and Banković, Predrag and Mojović, Zorica",
year = "2010",
abstract = "The availability of sophisticated diagnostic methods such as MRI has contributed to the increased use of imaging technologies in therapy and diagnostic studies. However, gastrointestinal tract MRI generally shows poor results because of the lack of suitable contrast agents. The iron oxide is traditionally popular material for MRI gastrointestinal studies because of its well-known superparamagnetic properties. On the other hand, it has many disadvantages which include black bowel, side effects of diarrhea and, from an important analytical standpoint, the presence of artifacts arising from clumping. When paramagnetic iron concentrates, it may become ferromagnetic, drastically altering its imaging properties. Other paramagnetic species, represented by gadolinium, also seem to be potentially suitable agents for these studies. Nevertheless, this metal itself cannot be used in humans because of its toxic properties. Therefore, there is clearly a need for orally effective, well tolerated agents that can be used in humans for digestive imaging studies. This MRI contrast should be useful for visualizing the anatomy of the digestive tract and particularly to differentiate between normal and pathological states, such as tumors. The solution has been proposed as zeolites or smectites (hectorite and montmorillonite) enclosing of paramagnetic metal ions obtained by ion-exchange methods. However, such materials could have problems of leakage of paramagnetic ions causing the appearance of the number side-effects. We propose the usage of the pillaring method for paramagnetic metal encapsulation in bentonites. By that way, paramagnetic cations like Fe(+3), Mn(+2) and Gd(+3) are introduced between clay mineral layers as polyoxo cations. After calcination, these polyoxo cations grow to be pillars (oxides of these metals) which are incorporated into the clay mineral matrix which prevents ion-leaching and dangerous side-effects. In this study we show that paramagnetic-pillared bentonites could be successfully used as MRI digestive tract non-leaching contrast agents, altering the longitudinal relaxation times of fluids in contact with the clay minerals.",
publisher = "Elsevier",
journal = "Applied Clay Science",
title = "Paramagnetic pillared bentonites - The new digestive tract MRI contrast agents",
volume = "48",
number = "1-2",
pages = "191-194",
doi = "10.1016/j.clay.2009.11.041"
}

Mojović, M., Dakovic, M., Banković, P.,& Mojović, Z.. (2010). Paramagnetic pillared bentonites - The new digestive tract MRI contrast agents. in Applied Clay Science
Elsevier., 48(1-2), 191-194.
https://doi.org/10.1016/j.clay.2009.11.041

Mojović M, Dakovic M, Banković P, Mojović Z. Paramagnetic pillared bentonites - The new digestive tract MRI contrast agents. in Applied Clay Science. 2010;48(1-2):191-194.
doi:10.1016/j.clay.2009.11.041 .

Mojović, Miloš, Dakovic, Marko, Banković, Predrag, Mojović, Zorica, "Paramagnetic pillared bentonites - The new digestive tract MRI contrast agents" in Applied Clay Science, 48, no. 1-2 (2010):191-194,
https://doi.org/10.1016/j.clay.2009.11.041 . .

TY  - CONF
AU  - Banković, Predrag
AU  - Milutinović Nikolić, Aleksandra
AU  - Jović-Jovičić, Nataša
AU  - Žunić, Marija
AU  - Vuković, Zorica
AU  - Abu-Rabi Stanković, Anđela
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6636
AB  - In this work a series of Al,Fe-pillared clays (PILCs) with different Fe3+ content was synthesized and characterized. Their catalytic performance was studied in the in catalytic wet peroxide oxidation (CWPO) of food dye tartrazine used as a model compound. Degree of decolorization of tartrazine containing aqueous solution was monitored in relation to Fe3+ content. The results of the catalytic tests showed that higher Fe content leads to higher catalyst efficiency in the investigated reaction. The reaction can be described by 0-order kinetics inherent to heterogeneous catalytic processes.
PB  - Society of Physical Chemists of Serbia
C3  - Proceedings - X International Conference on fundamental and applied aspects of Physical chemistry, 21-24 September 2010, Belgrade
T1  - The influence of Fe content in Al,Fe-pillared clays on its performance in catalytic wet oxidation
VL  - I
SP  - 107
EP  - 109
UR  - https://hdl.handle.net/21.15107/rcub_cer_6636
ER  - 

@conference{
author = "Banković, Predrag and Milutinović Nikolić, Aleksandra and Jović-Jovičić, Nataša and Žunić, Marija and Vuković, Zorica and Abu-Rabi Stanković, Anđela",
year = "2010",
abstract = "In this work a series of Al,Fe-pillared clays (PILCs) with different Fe3+ content was synthesized and characterized. Their catalytic performance was studied in the in catalytic wet peroxide oxidation (CWPO) of food dye tartrazine used as a model compound. Degree of decolorization of tartrazine containing aqueous solution was monitored in relation to Fe3+ content. The results of the catalytic tests showed that higher Fe content leads to higher catalyst efficiency in the investigated reaction. The reaction can be described by 0-order kinetics inherent to heterogeneous catalytic processes.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Proceedings - X International Conference on fundamental and applied aspects of Physical chemistry, 21-24 September 2010, Belgrade",
title = "The influence of Fe content in Al,Fe-pillared clays on its performance in catalytic wet oxidation",
volume = "I",
pages = "107-109",
url = "https://hdl.handle.net/21.15107/rcub_cer_6636"
}

Banković, P., Milutinović Nikolić, A., Jović-Jovičić, N., Žunić, M., Vuković, Z.,& Abu-Rabi Stanković, A.. (2010). The influence of Fe content in Al,Fe-pillared clays on its performance in catalytic wet oxidation. in Proceedings - X International Conference on fundamental and applied aspects of Physical chemistry, 21-24 September 2010, Belgrade
Society of Physical Chemists of Serbia., I, 107-109.
https://hdl.handle.net/21.15107/rcub_cer_6636

Banković P, Milutinović Nikolić A, Jović-Jovičić N, Žunić M, Vuković Z, Abu-Rabi Stanković A. The influence of Fe content in Al,Fe-pillared clays on its performance in catalytic wet oxidation. in Proceedings - X International Conference on fundamental and applied aspects of Physical chemistry, 21-24 September 2010, Belgrade. 2010;I:107-109.
https://hdl.handle.net/21.15107/rcub_cer_6636 .

Banković, Predrag, Milutinović Nikolić, Aleksandra, Jović-Jovičić, Nataša, Žunić, Marija, Vuković, Zorica, Abu-Rabi Stanković, Anđela, "The influence of Fe content in Al,Fe-pillared clays on its performance in catalytic wet oxidation" in Proceedings - X International Conference on fundamental and applied aspects of Physical chemistry, 21-24 September 2010, Belgrade, I (2010):107-109,
https://hdl.handle.net/21.15107/rcub_cer_6636 .

TY  - CONF
AU  - Mojović, Zorica
AU  - Banković, Predrag
AU  - Jović-Jovičić, Nataša
AU  - Žunić, Marija
AU  - Abu Rabi-Stanković, Anđela
AU  - Marinović, Sanja
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6320
AB  - Zeolite NaX was modified by Pt and Pt/Ru nanodispersed metallic clusters. This
modification was achieved by zeolite impregnation with acetylacetonate salt/acetone
solution, followed by acetone evaporation and thermal decomposition of
organometallic complex. The mixture of modified zeolite and 10 wt.% of carbon black,
in a form of thin layer, was pasted to a glassy carbon surface by nafion. Electrocatalytic
properties of metal-modified zeolites were tested in methanol electrooxidation reaction.
PB  - Society of Physical Chemists of Serbia
C3  - Proceedings - 10th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2010, 21-24 September 2010, Belgrade, Serbia
T1  - Methanol electrooxidation from alkaline solution on pt and PtRu modified Zeolite X
SP  - 286
EP  - 288
UR  - https://hdl.handle.net/21.15107/rcub_cer_6320
ER  - 

@conference{
author = "Mojović, Zorica and Banković, Predrag and Jović-Jovičić, Nataša and Žunić, Marija and Abu Rabi-Stanković, Anđela and Marinović, Sanja",
year = "2010",
abstract = "Zeolite NaX was modified by Pt and Pt/Ru nanodispersed metallic clusters. This
modification was achieved by zeolite impregnation with acetylacetonate salt/acetone
solution, followed by acetone evaporation and thermal decomposition of
organometallic complex. The mixture of modified zeolite and 10 wt.% of carbon black,
in a form of thin layer, was pasted to a glassy carbon surface by nafion. Electrocatalytic
properties of metal-modified zeolites were tested in methanol electrooxidation reaction.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Proceedings - 10th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2010, 21-24 September 2010, Belgrade, Serbia",
title = "Methanol electrooxidation from alkaline solution on pt and PtRu modified Zeolite X",
pages = "286-288",
url = "https://hdl.handle.net/21.15107/rcub_cer_6320"
}

Mojović, Z., Banković, P., Jović-Jovičić, N., Žunić, M., Abu Rabi-Stanković, A.,& Marinović, S.. (2010). Methanol electrooxidation from alkaline solution on pt and PtRu modified Zeolite X. in Proceedings - 10th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2010, 21-24 September 2010, Belgrade, Serbia
Society of Physical Chemists of Serbia., 286-288.
https://hdl.handle.net/21.15107/rcub_cer_6320

Mojović Z, Banković P, Jović-Jovičić N, Žunić M, Abu Rabi-Stanković A, Marinović S. Methanol electrooxidation from alkaline solution on pt and PtRu modified Zeolite X. in Proceedings - 10th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2010, 21-24 September 2010, Belgrade, Serbia. 2010;:286-288.
https://hdl.handle.net/21.15107/rcub_cer_6320 .

Mojović, Zorica, Banković, Predrag, Jović-Jovičić, Nataša, Žunić, Marija, Abu Rabi-Stanković, Anđela, Marinović, Sanja, "Methanol electrooxidation from alkaline solution on pt and PtRu modified Zeolite X" in Proceedings - 10th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2010, 21-24 September 2010, Belgrade, Serbia (2010):286-288,
https://hdl.handle.net/21.15107/rcub_cer_6320 .

TY  - CONF
AU  - Ivanović, Ana
AU  - Čupić, Željko
AU  - Marinović, Sanja
AU  - Schmitz, Guy
AU  - Kolar-Anić, Ljiljana
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6317
AB  - Mixed mode oscillations are obtained in numerical simulations of the Bray-
Liebhafsky oscillatory reaction in CSTR, for appropriate choice of the parameter
set. In this paper, we analyze critical manifold of the slow-fast system in three
dimensional phase subspace. We found that small amplitude oscillations obtained
as a part of mixed mode dynamics are governed by canard solutions.
PB  - Society of Physical Chemists of Serbia
C3  - Proceedings - 10th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2010, 21-24 September 2010, Belgrade, Serbia
T1  - Critical manifold of the model for Bray-Liebhafsky oscillatory reaction
SP  - 236
EP  - 238
UR  - https://hdl.handle.net/21.15107/rcub_cer_6317
ER  - 

@conference{
author = "Ivanović, Ana and Čupić, Željko and Marinović, Sanja and Schmitz, Guy and Kolar-Anić, Ljiljana",
year = "2010",
abstract = "Mixed mode oscillations are obtained in numerical simulations of the Bray-
Liebhafsky oscillatory reaction in CSTR, for appropriate choice of the parameter
set. In this paper, we analyze critical manifold of the slow-fast system in three
dimensional phase subspace. We found that small amplitude oscillations obtained
as a part of mixed mode dynamics are governed by canard solutions.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Proceedings - 10th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2010, 21-24 September 2010, Belgrade, Serbia",
title = "Critical manifold of the model for Bray-Liebhafsky oscillatory reaction",
pages = "236-238",
url = "https://hdl.handle.net/21.15107/rcub_cer_6317"
}

Ivanović, A., Čupić, Ž., Marinović, S., Schmitz, G.,& Kolar-Anić, L.. (2010). Critical manifold of the model for Bray-Liebhafsky oscillatory reaction. in Proceedings - 10th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2010, 21-24 September 2010, Belgrade, Serbia
Society of Physical Chemists of Serbia., 236-238.
https://hdl.handle.net/21.15107/rcub_cer_6317

Ivanović A, Čupić Ž, Marinović S, Schmitz G, Kolar-Anić L. Critical manifold of the model for Bray-Liebhafsky oscillatory reaction. in Proceedings - 10th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2010, 21-24 September 2010, Belgrade, Serbia. 2010;:236-238.
https://hdl.handle.net/21.15107/rcub_cer_6317 .

Ivanović, Ana, Čupić, Željko, Marinović, Sanja, Schmitz, Guy, Kolar-Anić, Ljiljana, "Critical manifold of the model for Bray-Liebhafsky oscillatory reaction" in Proceedings - 10th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Physical Chemistry 2010, 21-24 September 2010, Belgrade, Serbia (2010):236-238,
https://hdl.handle.net/21.15107/rcub_cer_6317 .

TY  - JOUR
AU  - Ostojić, Bojana
AU  - Jensen, Per
AU  - Schwerdtfeger, Peter
AU  - Assadollahzadeh, B.
AU  - Bunker, P. R.
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/711
AB  - Hypermetallation is a concept that applies to molecules having metal stoichiometries that exceed normal valence, and BeOBe is just one example of such a molecule. Previous ab initio calculations and spectroscopic studies have shown that BeOBe has a linear (1)Sigma(+)(g) ground electronic state and a very low lying (3)Sigma(+)(u) first excited electronic state. As the gas phase infrared spectrum of this molecule is unknown, we simulate such absorption spectra for both of these electronic states. To this end, we calculate the three-dimensional potential energy surfaces and the electric dipole moment surfaces of each of the two states using a multireference configuration interaction (MRCISD) approach based on full-valence complete active space self-consistent field (FV-CASSCF) wavefunctions. This is followed by variational MORBID calculations, using our potential energy and dipole moment surfaces, in order to determine rovibrational term values and to simulate the infrared absorption spectrum of both the singlet and triplet states. We also calculate the dipole polarizability for both states at their equilibrium geometry, as this is of interest for probing the molecule in future beam deflection experiments.
PB  - Academic Press Inc Elsevier Science, San Diego
T2  - Journal of Molecular Spectroscopy
T1  - The predicted infrared spectrum of the hyperberyllium molecule BeOBe in its (X)over-tilde(1)Sigma(+)(g) and (a)over-tilde(3)Sigma(+)(u) electronic states
VL  - 263
IS  - 1
SP  - 21
EP  - 26
DO  - 10.1016/j.jms.2010.06.008
ER  - 

@article{
author = "Ostojić, Bojana and Jensen, Per and Schwerdtfeger, Peter and Assadollahzadeh, B. and Bunker, P. R.",
year = "2010",
abstract = "Hypermetallation is a concept that applies to molecules having metal stoichiometries that exceed normal valence, and BeOBe is just one example of such a molecule. Previous ab initio calculations and spectroscopic studies have shown that BeOBe has a linear (1)Sigma(+)(g) ground electronic state and a very low lying (3)Sigma(+)(u) first excited electronic state. As the gas phase infrared spectrum of this molecule is unknown, we simulate such absorption spectra for both of these electronic states. To this end, we calculate the three-dimensional potential energy surfaces and the electric dipole moment surfaces of each of the two states using a multireference configuration interaction (MRCISD) approach based on full-valence complete active space self-consistent field (FV-CASSCF) wavefunctions. This is followed by variational MORBID calculations, using our potential energy and dipole moment surfaces, in order to determine rovibrational term values and to simulate the infrared absorption spectrum of both the singlet and triplet states. We also calculate the dipole polarizability for both states at their equilibrium geometry, as this is of interest for probing the molecule in future beam deflection experiments.",
publisher = "Academic Press Inc Elsevier Science, San Diego",
journal = "Journal of Molecular Spectroscopy",
title = "The predicted infrared spectrum of the hyperberyllium molecule BeOBe in its (X)over-tilde(1)Sigma(+)(g) and (a)over-tilde(3)Sigma(+)(u) electronic states",
volume = "263",
number = "1",
pages = "21-26",
doi = "10.1016/j.jms.2010.06.008"
}

Ostojić, B., Jensen, P., Schwerdtfeger, P., Assadollahzadeh, B.,& Bunker, P. R.. (2010). The predicted infrared spectrum of the hyperberyllium molecule BeOBe in its (X)over-tilde(1)Sigma(+)(g) and (a)over-tilde(3)Sigma(+)(u) electronic states. in Journal of Molecular Spectroscopy
Academic Press Inc Elsevier Science, San Diego., 263(1), 21-26.
https://doi.org/10.1016/j.jms.2010.06.008

Ostojić B, Jensen P, Schwerdtfeger P, Assadollahzadeh B, Bunker PR. The predicted infrared spectrum of the hyperberyllium molecule BeOBe in its (X)over-tilde(1)Sigma(+)(g) and (a)over-tilde(3)Sigma(+)(u) electronic states. in Journal of Molecular Spectroscopy. 2010;263(1):21-26.
doi:10.1016/j.jms.2010.06.008 .

Ostojić, Bojana, Jensen, Per, Schwerdtfeger, Peter, Assadollahzadeh, B., Bunker, P. R., "The predicted infrared spectrum of the hyperberyllium molecule BeOBe in its (X)over-tilde(1)Sigma(+)(g) and (a)over-tilde(3)Sigma(+)(u) electronic states" in Journal of Molecular Spectroscopy, 263, no. 1 (2010):21-26,
https://doi.org/10.1016/j.jms.2010.06.008 . .

TY  - JOUR
AU  - Mojović, Zorica
AU  - Milutinović Nikolić, Aleksandra
AU  - Banković, Predrag
AU  - Mentus, Slavko
AU  - Jovanović, Dušan M.
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/634
AB  - In order to enhance silver effectiveness for oxygen reduction reaction, pillared clay was used as a support for silver nanodispersion. Silver particles incorporation into pillared clay pores was attempted by impregnation/thermal degradation technique. X-ray diffraction as well as adsorption-desorption isotherms confirmed that pillaring procedure was successful. Scanning electron microscopy evidenced that a part of silver appeared outside the pillared clay cavities. Ag-pillared clay composite homogenized with 10 wt.% of nanodispersed carbon black (Vulcan), was applied on a flat glassy carbon surface and used as an electrode material. Oxygen reduction reaction was investigated in an O(2)-saturated aqueous 0.1 M NaOH solution.
PB  - Springer, New York
T2  - Journal of Solid State Electrochemistry
T1  - Electrochemical behavior of silver-impregnated Al-pillared smectite in alkaline solution
VL  - 14
IS  - 9
SP  - 1621
EP  - 1627
DO  - 10.1007/s10008-010-1006-z
ER  - 

@article{
author = "Mojović, Zorica and Milutinović Nikolić, Aleksandra and Banković, Predrag and Mentus, Slavko and Jovanović, Dušan M.",
year = "2010",
abstract = "In order to enhance silver effectiveness for oxygen reduction reaction, pillared clay was used as a support for silver nanodispersion. Silver particles incorporation into pillared clay pores was attempted by impregnation/thermal degradation technique. X-ray diffraction as well as adsorption-desorption isotherms confirmed that pillaring procedure was successful. Scanning electron microscopy evidenced that a part of silver appeared outside the pillared clay cavities. Ag-pillared clay composite homogenized with 10 wt.% of nanodispersed carbon black (Vulcan), was applied on a flat glassy carbon surface and used as an electrode material. Oxygen reduction reaction was investigated in an O(2)-saturated aqueous 0.1 M NaOH solution.",
publisher = "Springer, New York",
journal = "Journal of Solid State Electrochemistry",
title = "Electrochemical behavior of silver-impregnated Al-pillared smectite in alkaline solution",
volume = "14",
number = "9",
pages = "1621-1627",
doi = "10.1007/s10008-010-1006-z"
}

Mojović, Z., Milutinović Nikolić, A., Banković, P., Mentus, S.,& Jovanović, D. M.. (2010). Electrochemical behavior of silver-impregnated Al-pillared smectite in alkaline solution. in Journal of Solid State Electrochemistry
Springer, New York., 14(9), 1621-1627.
https://doi.org/10.1007/s10008-010-1006-z

Mojović Z, Milutinović Nikolić A, Banković P, Mentus S, Jovanović DM. Electrochemical behavior of silver-impregnated Al-pillared smectite in alkaline solution. in Journal of Solid State Electrochemistry. 2010;14(9):1621-1627.
doi:10.1007/s10008-010-1006-z .

Mojović, Zorica, Milutinović Nikolić, Aleksandra, Banković, Predrag, Mentus, Slavko, Jovanović, Dušan M., "Electrochemical behavior of silver-impregnated Al-pillared smectite in alkaline solution" in Journal of Solid State Electrochemistry, 14, no. 9 (2010):1621-1627,
https://doi.org/10.1007/s10008-010-1006-z . .

TY  - JOUR
AU  - Rožić, Ljiljana
AU  - Novaković, Tatjana
AU  - Petrović, Srđan
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/650
AB  - The effect of acid activation on the textural properties of a bentonite from Serbia was investigated using response surface methodology. The influence of activation parameters (temperature, time, acid normality, solid-to-liquid ratio and stirring rate) on the specific surface area, pore volume, pore diameter and bulk density of the activated bentonite samples has been studied using response surface methodology based on central composite rotatable design (CCRD). The specific surface areas of the activated samples were chosen for the selected process response. The quantitative relationship between the specific surface areas and different levels of the quoted factors was used to determine the optimized levels of these factors by CCRD. The analysis of the variance of the quadratic model demonstrates that the response surface methodology was one of the suitable methods to optimize the best operating conditions to maximize the specific surface area of the bentonite. Three dimensional plots are used to demonstrate the relations between the specific surface areas and the paired factors (when the other factors was kept constant) describing the behavior of bentonite in the process of acid activation. The specific surface area and the textural properties of the acid-activated bentonite are strongly affected by the process parameters. The optimum conditions to obtain the maximum specific surface area of acid-activated bentonite were as follows: temperature 90 degrees C, acid normality 4.5, stirring rate 450 rpm, solid-to-liquid ratio of 1:4.5 and duration 3 h. Under these conditions, the experimental values agreed with the values predicted by the analysis of variance, indicating a high fitting accuracy (R(2)=0.927) of the model used and the success of the response surface methodology in optimizing the process parameters of the acid activation of bentonite.
PB  - Elsevier
T2  - Applied Clay Science
T1  - Modeling and optimization process parameters of acid activation of bentonite by response surface methodology
VL  - 48
IS  - 1-2
SP  - 154
EP  - 158
DO  - 10.1016/j.clay.2009.11.043
ER  - 

@article{
author = "Rožić, Ljiljana and Novaković, Tatjana and Petrović, Srđan",
year = "2010",
abstract = "The effect of acid activation on the textural properties of a bentonite from Serbia was investigated using response surface methodology. The influence of activation parameters (temperature, time, acid normality, solid-to-liquid ratio and stirring rate) on the specific surface area, pore volume, pore diameter and bulk density of the activated bentonite samples has been studied using response surface methodology based on central composite rotatable design (CCRD). The specific surface areas of the activated samples were chosen for the selected process response. The quantitative relationship between the specific surface areas and different levels of the quoted factors was used to determine the optimized levels of these factors by CCRD. The analysis of the variance of the quadratic model demonstrates that the response surface methodology was one of the suitable methods to optimize the best operating conditions to maximize the specific surface area of the bentonite. Three dimensional plots are used to demonstrate the relations between the specific surface areas and the paired factors (when the other factors was kept constant) describing the behavior of bentonite in the process of acid activation. The specific surface area and the textural properties of the acid-activated bentonite are strongly affected by the process parameters. The optimum conditions to obtain the maximum specific surface area of acid-activated bentonite were as follows: temperature 90 degrees C, acid normality 4.5, stirring rate 450 rpm, solid-to-liquid ratio of 1:4.5 and duration 3 h. Under these conditions, the experimental values agreed with the values predicted by the analysis of variance, indicating a high fitting accuracy (R(2)=0.927) of the model used and the success of the response surface methodology in optimizing the process parameters of the acid activation of bentonite.",
publisher = "Elsevier",
journal = "Applied Clay Science",
title = "Modeling and optimization process parameters of acid activation of bentonite by response surface methodology",
volume = "48",
number = "1-2",
pages = "154-158",
doi = "10.1016/j.clay.2009.11.043"
}

Rožić, L., Novaković, T.,& Petrović, S.. (2010). Modeling and optimization process parameters of acid activation of bentonite by response surface methodology. in Applied Clay Science
Elsevier., 48(1-2), 154-158.
https://doi.org/10.1016/j.clay.2009.11.043

Rožić L, Novaković T, Petrović S. Modeling and optimization process parameters of acid activation of bentonite by response surface methodology. in Applied Clay Science. 2010;48(1-2):154-158.
doi:10.1016/j.clay.2009.11.043 .

Rožić, Ljiljana, Novaković, Tatjana, Petrović, Srđan, "Modeling and optimization process parameters of acid activation of bentonite by response surface methodology" in Applied Clay Science, 48, no. 1-2 (2010):154-158,
https://doi.org/10.1016/j.clay.2009.11.043 . .

TY  - JOUR
AU  - Novaković, Tatjana
AU  - Rožić, Ljiljana
AU  - Petrović, Srđan
AU  - Vuković, Zorica
AU  - Dondur, Vera
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/641
AB  - Active porous alumina was prepared via a sol-gel method and subjected to thermal treatment in the temperature range 500-1200 °C. The addition of lanthanum effectively inhibited the surface area loss of the aluminas. Fractal analysis from nitrogen adsorption isotherm was used to study the pore surface roughness of alumina samples with different chemical compositions (PEG, PEG and lanthanum) and calcinations conditions in terms of the surface fractal dimension, d. The Mahnke and Mögel (MM) model was used to determine the value of d of La(III)-doped alumina. Following the MM model, the d value of the activated aluminas increased as the calcination temperature increased from 500 to 700 °C but decreased after calcination at 1000, 1100 and 1200 °C. The addition of polyethylene glycol (PEG 5600) to the boehmite sol reduced the surface fractal of the activated alumina due to the heterogeneous distribution of the pores. With increasing La(III) concentration from 0.015 to 0.045 mol La(III)/mol Al(III), the d value of La-modified alumina samples decreased, indicating a smoother surface. The obtained PEG+La-doped boehmite sol can be used as a precursor dispersion for the deposition of mesoporous alumina coatings on stainless steel foil, by the spray pyrolysis method.
AB  - Aktivni porozni aluminijum-oksid dobijen sol-gel metodom je termički obrađen na povišenim temperaturama u intervalu od 500 do 1200 °C. Ispitivan je uticaj temperature termičke obrade i dodatka polietilen glikola (PEG) i La(III) jona na specifičnu površinu, zapreminu pora i prečnik pora, kao i fraktalnu dimenziju površine aktiviranog aluminijum-oksida. Na osnovu podataka iz adsorpcionoesorpcionih izotermi azota određen je tip pora i izračunate su vrednosti osnovnih parametara teksturalnih svojstava uzoraka. Porast temperature termičke obrade prouzrokovao je smanjenje specifične površine sa 280 na 65 m2 g-1, zapremine pora sa 0,45 na 0,27 cm3 g-1, porast preovlađujućeg prečnika pora od 3 do 6 nm i porast fraktalne dimenzije površine od 2,068 do 2,192. Dobijeni bemitni sol sa dodatkom PEG i La(III) jona može se iskoristiti kao prekursorska disperzija pri sprej-pirolitičkoj metodi sinteze aluminijum oksidnih prevlaka na nosaču od nerđajućeg čelika.
PB  - Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Pore surface fractal analysis of PEG and La(III)-doped mesoporous alumina obtained by the sol-gel method
T1  - Fraktalna analiza površine mezoporoznog aluminijum(III)-oksida sa dodatkom PEG i La(III) dobijenog sol-gel postupkom
VL  - 75
IS  - 6
SP  - 833
EP  - 843
DO  - 10.2298/JSC090922053N
ER  - 

@article{
author = "Novaković, Tatjana and Rožić, Ljiljana and Petrović, Srđan and Vuković, Zorica and Dondur, Vera",
year = "2010",
abstract = "Active porous alumina was prepared via a sol-gel method and subjected to thermal treatment in the temperature range 500-1200 °C. The addition of lanthanum effectively inhibited the surface area loss of the aluminas. Fractal analysis from nitrogen adsorption isotherm was used to study the pore surface roughness of alumina samples with different chemical compositions (PEG, PEG and lanthanum) and calcinations conditions in terms of the surface fractal dimension, d. The Mahnke and Mögel (MM) model was used to determine the value of d of La(III)-doped alumina. Following the MM model, the d value of the activated aluminas increased as the calcination temperature increased from 500 to 700 °C but decreased after calcination at 1000, 1100 and 1200 °C. The addition of polyethylene glycol (PEG 5600) to the boehmite sol reduced the surface fractal of the activated alumina due to the heterogeneous distribution of the pores. With increasing La(III) concentration from 0.015 to 0.045 mol La(III)/mol Al(III), the d value of La-modified alumina samples decreased, indicating a smoother surface. The obtained PEG+La-doped boehmite sol can be used as a precursor dispersion for the deposition of mesoporous alumina coatings on stainless steel foil, by the spray pyrolysis method., Aktivni porozni aluminijum-oksid dobijen sol-gel metodom je termički obrađen na povišenim temperaturama u intervalu od 500 do 1200 °C. Ispitivan je uticaj temperature termičke obrade i dodatka polietilen glikola (PEG) i La(III) jona na specifičnu površinu, zapreminu pora i prečnik pora, kao i fraktalnu dimenziju površine aktiviranog aluminijum-oksida. Na osnovu podataka iz adsorpcionoesorpcionih izotermi azota određen je tip pora i izračunate su vrednosti osnovnih parametara teksturalnih svojstava uzoraka. Porast temperature termičke obrade prouzrokovao je smanjenje specifične površine sa 280 na 65 m2 g-1, zapremine pora sa 0,45 na 0,27 cm3 g-1, porast preovlađujućeg prečnika pora od 3 do 6 nm i porast fraktalne dimenzije površine od 2,068 do 2,192. Dobijeni bemitni sol sa dodatkom PEG i La(III) jona može se iskoristiti kao prekursorska disperzija pri sprej-pirolitičkoj metodi sinteze aluminijum oksidnih prevlaka na nosaču od nerđajućeg čelika.",
publisher = "Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Pore surface fractal analysis of PEG and La(III)-doped mesoporous alumina obtained by the sol-gel method, Fraktalna analiza površine mezoporoznog aluminijum(III)-oksida sa dodatkom PEG i La(III) dobijenog sol-gel postupkom",
volume = "75",
number = "6",
pages = "833-843",
doi = "10.2298/JSC090922053N"
}

Novaković, T., Rožić, L., Petrović, S., Vuković, Z.,& Dondur, V.. (2010). Pore surface fractal analysis of PEG and La(III)-doped mesoporous alumina obtained by the sol-gel method. in Journal of the Serbian Chemical Society
Serbian Chemical Society., 75(6), 833-843.
https://doi.org/10.2298/JSC090922053N

Novaković T, Rožić L, Petrović S, Vuković Z, Dondur V. Pore surface fractal analysis of PEG and La(III)-doped mesoporous alumina obtained by the sol-gel method. in Journal of the Serbian Chemical Society. 2010;75(6):833-843.
doi:10.2298/JSC090922053N .

Novaković, Tatjana, Rožić, Ljiljana, Petrović, Srđan, Vuković, Zorica, Dondur, Vera, "Pore surface fractal analysis of PEG and La(III)-doped mesoporous alumina obtained by the sol-gel method" in Journal of the Serbian Chemical Society, 75, no. 6 (2010):833-843,
https://doi.org/10.2298/JSC090922053N . .

TY  - JOUR
AU  - Mojović, Zorica
AU  - Banković, Predrag
AU  - Milutinović Nikolić, Aleksandra
AU  - Nedic, B.
AU  - Jovanović, Dušan M.
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/651
AB  - The influence of aluminosilicate support on the catalyst efficiency was investigated. Three different aluminosilicate materials containing cobalt (II) ion as active specie for phenol or nitrite oxidation were obtained. The first sample was zeolite 13X impregnated with Co by impregnation/thermal degradation procedure using Co-acetylacetonate. Bentonite was pillared with Al(3+)/Co(2+) mixture to obtain the second sample. For the third one Co was introduced into Al-pillared bentonite by ion-exchange using Co(NO(3))(2)*6H(2)O. Reactions of either phenol or nitrite oxidation were used as test reactions for the investigation of the influence of the type of aluminosilicate support on the catalytic activity of Co.
PB  - Elsevier
T2  - Applied Clay Science
T1  - Co-aluminosilicate based electrodes
VL  - 48
IS  - 1-2
SP  - 179
EP  - 184
DO  - 10.1016/j.clay.2009.11.022
ER  - 

@article{
author = "Mojović, Zorica and Banković, Predrag and Milutinović Nikolić, Aleksandra and Nedic, B. and Jovanović, Dušan M.",
year = "2010",
abstract = "The influence of aluminosilicate support on the catalyst efficiency was investigated. Three different aluminosilicate materials containing cobalt (II) ion as active specie for phenol or nitrite oxidation were obtained. The first sample was zeolite 13X impregnated with Co by impregnation/thermal degradation procedure using Co-acetylacetonate. Bentonite was pillared with Al(3+)/Co(2+) mixture to obtain the second sample. For the third one Co was introduced into Al-pillared bentonite by ion-exchange using Co(NO(3))(2)*6H(2)O. Reactions of either phenol or nitrite oxidation were used as test reactions for the investigation of the influence of the type of aluminosilicate support on the catalytic activity of Co.",
publisher = "Elsevier",
journal = "Applied Clay Science",
title = "Co-aluminosilicate based electrodes",
volume = "48",
number = "1-2",
pages = "179-184",
doi = "10.1016/j.clay.2009.11.022"
}

Mojović, Z., Banković, P., Milutinović Nikolić, A., Nedic, B.,& Jovanović, D. M.. (2010). Co-aluminosilicate based electrodes. in Applied Clay Science
Elsevier., 48(1-2), 179-184.
https://doi.org/10.1016/j.clay.2009.11.022

Mojović Z, Banković P, Milutinović Nikolić A, Nedic B, Jovanović DM. Co-aluminosilicate based electrodes. in Applied Clay Science. 2010;48(1-2):179-184.
doi:10.1016/j.clay.2009.11.022 .

Mojović, Zorica, Banković, Predrag, Milutinović Nikolić, Aleksandra, Nedic, B., Jovanović, Dušan M., "Co-aluminosilicate based electrodes" in Applied Clay Science, 48, no. 1-2 (2010):179-184,
https://doi.org/10.1016/j.clay.2009.11.022 . .

TY  - JOUR
AU  - Banković, Predrag
AU  - Mojović, Zorica
AU  - Milutinović Nikolić, Aleksandra
AU  - Jović-Jovičić, Nataša
AU  - Marinović, Sanja
AU  - Jovanović, Dušan M.
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/637
AB  - Bentonite was pillared with Al, Al-Cu, Al-Fe or Al-Co poly(hydroxo metal) cations for electrochemical oxidation of phenol in acidic solution. Multisweep cyclic voltammetry was applied to analyze the behavior of the bentonite modified glassy carbon electrode. The influence of pillaring on the electrocatalytic properties was investigated. Reactivation of the electrodes after prolonged phenol oxidation was performed by cathodisation at -2 V.
PB  - Elsevier
T2  - Applied Clay Science
T1  - Mixed pillared bentonite for electrooxidation of phenol
VL  - 49
IS  - 1-2
SP  - 84
EP  - 89
DO  - 10.1016/j.clay.2010.04.012
ER  - 

@article{
author = "Banković, Predrag and Mojović, Zorica and Milutinović Nikolić, Aleksandra and Jović-Jovičić, Nataša and Marinović, Sanja and Jovanović, Dušan M.",
year = "2010",
abstract = "Bentonite was pillared with Al, Al-Cu, Al-Fe or Al-Co poly(hydroxo metal) cations for electrochemical oxidation of phenol in acidic solution. Multisweep cyclic voltammetry was applied to analyze the behavior of the bentonite modified glassy carbon electrode. The influence of pillaring on the electrocatalytic properties was investigated. Reactivation of the electrodes after prolonged phenol oxidation was performed by cathodisation at -2 V.",
publisher = "Elsevier",
journal = "Applied Clay Science",
title = "Mixed pillared bentonite for electrooxidation of phenol",
volume = "49",
number = "1-2",
pages = "84-89",
doi = "10.1016/j.clay.2010.04.012"
}

Banković, P., Mojović, Z., Milutinović Nikolić, A., Jović-Jovičić, N., Marinović, S.,& Jovanović, D. M.. (2010). Mixed pillared bentonite for electrooxidation of phenol. in Applied Clay Science
Elsevier., 49(1-2), 84-89.
https://doi.org/10.1016/j.clay.2010.04.012

Banković P, Mojović Z, Milutinović Nikolić A, Jović-Jovičić N, Marinović S, Jovanović DM. Mixed pillared bentonite for electrooxidation of phenol. in Applied Clay Science. 2010;49(1-2):84-89.
doi:10.1016/j.clay.2010.04.012 .

Banković, Predrag, Mojović, Zorica, Milutinović Nikolić, Aleksandra, Jović-Jovičić, Nataša, Marinović, Sanja, Jovanović, Dušan M., "Mixed pillared bentonite for electrooxidation of phenol" in Applied Clay Science, 49, no. 1-2 (2010):84-89,
https://doi.org/10.1016/j.clay.2010.04.012 . .

TY  - JOUR
AU  - Kolar-Anić, Ljiljana
AU  - Čupić, Željko
AU  - Schmitz, Guy
AU  - Anić, Slobodan
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/633
AB  - Stoichiometric network analysis (SNA), a known method for analyzing complex reaction systems including biochemical ones, is improved and applied to a nonlinear process studied far from equilibrium in a continuously fed, well stirred tank reactor (CSTR). A particular attention is focused on the determination of the narrow range of the control parameter values where the main steady state is unstable and where different dynamic states can be simulated numerically. The instability region, the most important feature of nonlinear reaction systems, is calculated as a function of the SNA parameters (current rates and reciprocal concentrations of intermediate species in the steady state) and simplified by retaining only the dominant terms. Since the number of the current rates is usually larger than the number of linearly independent equations to be used for their calculation, it is shown here that the current rates can be replaced with a smaller number of reaction rates at the steady state. These rates are related to the experimental data in a simple manner. The instability conditions is also written as a function of dimensionless parameters derived from the SNA. This general approach is applied to a model of the Bray-Liebhafsky (BL) reaction having seven reactions without direct autocatalysis or autoinhibition, studied under CSTR conditions. Since the model has six intermediate species, it would be very difficult to analyze its instability condition by the conventional procedure, where a sixth order characteristics equation would have to be solved. On the other hand, the instability condition, obtained easily by the improved SNA, locates correctly the oscillatory region using numerical integration. Other dynamic states found earlier with a larger model of the BL reaction, such as mixed-mode oscillations, period doubling and chaos, are also obtained within the theoretically predicted oscillatory region. Thus, besides the general advantages of the improved stoichiometric network analysis as a method appropriate for the examination of complex nonlinear reactions, we show that the various mentioned dynamic states can be obtained by a very simple variant of the model of the BL reaction realized under CSTR conditions.
PB  - Oxford : Pergamon-Elsevier Science Ltd
T2  - Chemical Engineering Science
T1  - Improvement of the stoichiometric network analysis for determination of instability conditions of complex nonlinear reaction systems
VL  - 65
IS  - 12
SP  - 3718
EP  - 3728
DO  - 10.1016/j.ces.2010.03.008
ER  - 

@article{
author = "Kolar-Anić, Ljiljana and Čupić, Željko and Schmitz, Guy and Anić, Slobodan",
year = "2010",
abstract = "Stoichiometric network analysis (SNA), a known method for analyzing complex reaction systems including biochemical ones, is improved and applied to a nonlinear process studied far from equilibrium in a continuously fed, well stirred tank reactor (CSTR). A particular attention is focused on the determination of the narrow range of the control parameter values where the main steady state is unstable and where different dynamic states can be simulated numerically. The instability region, the most important feature of nonlinear reaction systems, is calculated as a function of the SNA parameters (current rates and reciprocal concentrations of intermediate species in the steady state) and simplified by retaining only the dominant terms. Since the number of the current rates is usually larger than the number of linearly independent equations to be used for their calculation, it is shown here that the current rates can be replaced with a smaller number of reaction rates at the steady state. These rates are related to the experimental data in a simple manner. The instability conditions is also written as a function of dimensionless parameters derived from the SNA. This general approach is applied to a model of the Bray-Liebhafsky (BL) reaction having seven reactions without direct autocatalysis or autoinhibition, studied under CSTR conditions. Since the model has six intermediate species, it would be very difficult to analyze its instability condition by the conventional procedure, where a sixth order characteristics equation would have to be solved. On the other hand, the instability condition, obtained easily by the improved SNA, locates correctly the oscillatory region using numerical integration. Other dynamic states found earlier with a larger model of the BL reaction, such as mixed-mode oscillations, period doubling and chaos, are also obtained within the theoretically predicted oscillatory region. Thus, besides the general advantages of the improved stoichiometric network analysis as a method appropriate for the examination of complex nonlinear reactions, we show that the various mentioned dynamic states can be obtained by a very simple variant of the model of the BL reaction realized under CSTR conditions.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
journal = "Chemical Engineering Science",
title = "Improvement of the stoichiometric network analysis for determination of instability conditions of complex nonlinear reaction systems",
volume = "65",
number = "12",
pages = "3718-3728",
doi = "10.1016/j.ces.2010.03.008"
}

Kolar-Anić, L., Čupić, Ž., Schmitz, G.,& Anić, S.. (2010). Improvement of the stoichiometric network analysis for determination of instability conditions of complex nonlinear reaction systems. in Chemical Engineering Science
Oxford : Pergamon-Elsevier Science Ltd., 65(12), 3718-3728.
https://doi.org/10.1016/j.ces.2010.03.008

Kolar-Anić L, Čupić Ž, Schmitz G, Anić S. Improvement of the stoichiometric network analysis for determination of instability conditions of complex nonlinear reaction systems. in Chemical Engineering Science. 2010;65(12):3718-3728.
doi:10.1016/j.ces.2010.03.008 .

Kolar-Anić, Ljiljana, Čupić, Željko, Schmitz, Guy, Anić, Slobodan, "Improvement of the stoichiometric network analysis for determination of instability conditions of complex nonlinear reaction systems" in Chemical Engineering Science, 65, no. 12 (2010):3718-3728,
https://doi.org/10.1016/j.ces.2010.03.008 . .

TY  - JOUR
AU  - Lončarević, Davor
AU  - Krstić, Jugoslav
AU  - Dostanić, Jasmina
AU  - Manojlović, Dragan
AU  - Čupić, Željko
AU  - Jovanović, Dušan M.
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/744
AB  - Polymer supported catalysts with Co(II) and Cr(VI) ions were prepared and characterized by means of FTIR, diffuse reflectance UV-vis, nitrogen physisorption, mercury porosimetry and SEM-EDX measurements. The catalytic activity and selectivity of the polymer supported catalysts were tested in aerobic liquid-phase partial oxidation of cyclohexane in a polytetrafluoroethylene lined reactor. The influence of reaction time and temperature, main products addition, mass of the catalyst and different metals loading was investigated. Product yield and cyclohexyl hydroperoxide formation in the catalytic system were used as critical parameters which could be optimized by changing the cobalt content on the polymer and the catalyst mass used in the catalytic runs. By increasing cobalt content, a higher activity and corresponding lower selectivity towards cyclohexanone were obtained. This study indicates that the selectivity towards cyclohexanone and cyclohexanol is mainly defined by the yield and type of the catalyst with minor influence of temperature and main products addition. In addition catalysts were used for deperoxidation of cyclohexyl hydroperoxide in mild conditions. Nearly the same selectivity towards cyclohexanone and cyclohexanol is achieved using the cobalt containing catalyst, while a higher selectivity towards cyclohexanone is achieved using the chromium containing catalysts.
PB  - Elsevier Science Sa, Lausanne
T2  - Chemical Engineering Journal
T1  - Cyclohexane oxidation and cyclohexyl hydroperoxide decomposition by poly(4-vinylpyridine-co-divinylbenzene) supported cobalt and chromium complexes
VL  - 157
IS  - 1
SP  - 181
EP  - 188
DO  - 10.1016/j.cej.2009.11.034
ER  - 

@article{
author = "Lončarević, Davor and Krstić, Jugoslav and Dostanić, Jasmina and Manojlović, Dragan and Čupić, Željko and Jovanović, Dušan M.",
year = "2010",
abstract = "Polymer supported catalysts with Co(II) and Cr(VI) ions were prepared and characterized by means of FTIR, diffuse reflectance UV-vis, nitrogen physisorption, mercury porosimetry and SEM-EDX measurements. The catalytic activity and selectivity of the polymer supported catalysts were tested in aerobic liquid-phase partial oxidation of cyclohexane in a polytetrafluoroethylene lined reactor. The influence of reaction time and temperature, main products addition, mass of the catalyst and different metals loading was investigated. Product yield and cyclohexyl hydroperoxide formation in the catalytic system were used as critical parameters which could be optimized by changing the cobalt content on the polymer and the catalyst mass used in the catalytic runs. By increasing cobalt content, a higher activity and corresponding lower selectivity towards cyclohexanone were obtained. This study indicates that the selectivity towards cyclohexanone and cyclohexanol is mainly defined by the yield and type of the catalyst with minor influence of temperature and main products addition. In addition catalysts were used for deperoxidation of cyclohexyl hydroperoxide in mild conditions. Nearly the same selectivity towards cyclohexanone and cyclohexanol is achieved using the cobalt containing catalyst, while a higher selectivity towards cyclohexanone is achieved using the chromium containing catalysts.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Chemical Engineering Journal",
title = "Cyclohexane oxidation and cyclohexyl hydroperoxide decomposition by poly(4-vinylpyridine-co-divinylbenzene) supported cobalt and chromium complexes",
volume = "157",
number = "1",
pages = "181-188",
doi = "10.1016/j.cej.2009.11.034"
}

Lončarević, D., Krstić, J., Dostanić, J., Manojlović, D., Čupić, Ž.,& Jovanović, D. M.. (2010). Cyclohexane oxidation and cyclohexyl hydroperoxide decomposition by poly(4-vinylpyridine-co-divinylbenzene) supported cobalt and chromium complexes. in Chemical Engineering Journal
Elsevier Science Sa, Lausanne., 157(1), 181-188.
https://doi.org/10.1016/j.cej.2009.11.034

Lončarević D, Krstić J, Dostanić J, Manojlović D, Čupić Ž, Jovanović DM. Cyclohexane oxidation and cyclohexyl hydroperoxide decomposition by poly(4-vinylpyridine-co-divinylbenzene) supported cobalt and chromium complexes. in Chemical Engineering Journal. 2010;157(1):181-188.
doi:10.1016/j.cej.2009.11.034 .

Lončarević, Davor, Krstić, Jugoslav, Dostanić, Jasmina, Manojlović, Dragan, Čupić, Željko, Jovanović, Dušan M., "Cyclohexane oxidation and cyclohexyl hydroperoxide decomposition by poly(4-vinylpyridine-co-divinylbenzene) supported cobalt and chromium complexes" in Chemical Engineering Journal, 157, no. 1 (2010):181-188,
https://doi.org/10.1016/j.cej.2009.11.034 . .

TY  - JOUR
AU  - Jović-Jovičić, Nataša
AU  - Milutinović Nikolić, Aleksandra
AU  - Banković, Predrag
AU  - Dojčinović, Biljana
AU  - Nedić, B.
AU  - Gržetić, Ivan
AU  - Jovanović, Dušan M.
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/627
AB  - In this paper partial and complete substitution of cations in the interlayer region of clay with different amounts of two aliphatic ammonium cations was performed with aim of synthesis of organobentonites with multipurpose adsorption properties. Domestic clay from Bogovina was submitted according to a common procedure used for the obtention of organobentonite, which comprises the following steps: grinding, sieving, Na-exchange, cation exchange and drying. The samples were characterized by X-ray diffraction and infrared spectroscopy. The incorporation of surfactant molecules into smectite structure lead to constant increase of d(001) basal spacing. IR absorption bands assigned to methyl and methylene vibrations increased with the increase of surfactant/bentonite ratio and length of aliphatic chain in surfactant molecules. Adsorptive properties of the obtained materials were in accordance with their organophylicity: the adsorption of organic dye increased while the rate of removal of Pb2+ by adsorption decreased.
PB  - Polish Acad Sciences Inst Physics, Warsaw
T2  - Acta Physica Polonica A
T1  - Synthesis, Characterization and Adsorptive Properties of Organobentonites
VL  - 117
IS  - 5
SP  - 849
EP  - 854
DO  - 10.12693/APhysPolA.117.849
ER  - 

@article{
author = "Jović-Jovičić, Nataša and Milutinović Nikolić, Aleksandra and Banković, Predrag and Dojčinović, Biljana and Nedić, B. and Gržetić, Ivan and Jovanović, Dušan M.",
year = "2010",
abstract = "In this paper partial and complete substitution of cations in the interlayer region of clay with different amounts of two aliphatic ammonium cations was performed with aim of synthesis of organobentonites with multipurpose adsorption properties. Domestic clay from Bogovina was submitted according to a common procedure used for the obtention of organobentonite, which comprises the following steps: grinding, sieving, Na-exchange, cation exchange and drying. The samples were characterized by X-ray diffraction and infrared spectroscopy. The incorporation of surfactant molecules into smectite structure lead to constant increase of d(001) basal spacing. IR absorption bands assigned to methyl and methylene vibrations increased with the increase of surfactant/bentonite ratio and length of aliphatic chain in surfactant molecules. Adsorptive properties of the obtained materials were in accordance with their organophylicity: the adsorption of organic dye increased while the rate of removal of Pb2+ by adsorption decreased.",
publisher = "Polish Acad Sciences Inst Physics, Warsaw",
journal = "Acta Physica Polonica A",
title = "Synthesis, Characterization and Adsorptive Properties of Organobentonites",
volume = "117",
number = "5",
pages = "849-854",
doi = "10.12693/APhysPolA.117.849"
}

Jović-Jovičić, N., Milutinović Nikolić, A., Banković, P., Dojčinović, B., Nedić, B., Gržetić, I.,& Jovanović, D. M.. (2010). Synthesis, Characterization and Adsorptive Properties of Organobentonites. in Acta Physica Polonica A
Polish Acad Sciences Inst Physics, Warsaw., 117(5), 849-854.
https://doi.org/10.12693/APhysPolA.117.849

Jović-Jovičić N, Milutinović Nikolić A, Banković P, Dojčinović B, Nedić B, Gržetić I, Jovanović DM. Synthesis, Characterization and Adsorptive Properties of Organobentonites. in Acta Physica Polonica A. 2010;117(5):849-854.
doi:10.12693/APhysPolA.117.849 .

Jović-Jovičić, Nataša, Milutinović Nikolić, Aleksandra, Banković, Predrag, Dojčinović, Biljana, Nedić, B., Gržetić, Ivan, Jovanović, Dušan M., "Synthesis, Characterization and Adsorptive Properties of Organobentonites" in Acta Physica Polonica A, 117, no. 5 (2010):849-854,
https://doi.org/10.12693/APhysPolA.117.849 . .

TY  - JOUR
AU  - Žunić, Marija
AU  - Milutinović Nikolić, Aleksandra
AU  - Jović-Jovičić, Nataša
AU  - Banković, Predrag
AU  - Mojović, Zorica
AU  - Manojlović, Dragan
AU  - Jovanović, Dušan M.
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/723
AB  - Modification and characterization of bentonite from location Bogovina, Serbia was performed in order to obtain material applicable in wastewater purification. The  LT 75μm bentonite fraction was used in organobentonite synthesis while the  LT 2μm bentonite fraction, obtained by hydroseparation was used in pillaring procedure. Organo-modification of bentonite was performed with (1-hexadecyl)trimethylammonium bromide (HDTMA-Br). Pillared bentonite was obtained using standard procedure. Al3+ and Fe3+ were incorporated in pillars in 4:1 ratio and applied as catalyst in catalytic wet peroxide oxidation. Differences in structure of starting and modified bentonites were established by XRD analysis and nitrogen physisorption on -196°C. The (001) smectite peak around 2θ = 6° shifts during the modification process. The Na-exchange process lowered d001 from 1.53 nm (2θ = 5.78°) for starting clay to 1.28 nm (2θ = 6.92°), but the clay retained its swelling properties. The pillaring process increased and fixed the basal spacing to 1.74 nm. Intercalation of HDTMA ions into smectite structure increased d001 to 2.00 nm for organobentonite. Specific surface area, SBET, was affected by particle size and type of modification. The samples with finer bentonite fraction had higher SBET due to increased smectite content. Na-exchanged bentonite samples had higher SBET value than starting clay samples of same granulation. Organo modification caused dramatic decrease in SBET value, while the pillaring process lead to an increase of SBET value. Adsorptive and catalytic purification of wastewaters containing dyes was tested using Acid Yellow 99 as a model dye. Na-exchanged bentonite had greater adsorption affinity for dye adsorption than raw bentonite owing to higher SBET. By organomodification this affinity was enhanced more than 70 times due to transition of bentonite surface from hydrophilic to organophilic. Al, Fe pillared bentonite was proven to be efficient in catalytic wet peroxide oxidation of Acid Yellow 99 dye at room temperature.
AB  - Izvršena je modifikacija i karakterizacija bentonita radi dobijanja materijala za prečišćavanje otpadnih voda. Organo-modifikacija bentonita izvedena je pomoću heksadeciltrimetilamonijum-bromida. Pilareni bentonit dobijen je standardnim postupkom uz ugradnju Al3+ i Fe3+ jona u odnosu 4:1, i korišćen je kao katalizator za oksidativnu razgradnju u prisustvu vodonik-peroksida. Razlike u strukturi polaznog i modifikovanih bentonita utvrđene su rendgeno-strukturnom analizom i fizisorpcijom azota na -196°C. Ispitivano je adsorpciono i katalitičko prečišćavanje otpadnih voda koje sadrže boje, korišćenjem Acid Yellow 99 kao model boje. Izvršeno je poređenje katalitičkih i adsorpiconih svojstava modifikovanih bentonita.
PB  - Assoc Chemists & Chemical Engineers Of Serbia, Belgrade
T2  - Hemijska industrija
T1  - Modified bentonite as adsorbent and catalyst for purification of wastewaters containing dyes
T1  - Modifikovani bentonit kao adsorbent i katalizator za prečišćavanje otpadnih voda koje sadrže boje
VL  - 64
IS  - 3
SP  - 193
EP  - 199
DO  - 10.2298/HEMIND091221023Z
ER  - 

@article{
author = "Žunić, Marija and Milutinović Nikolić, Aleksandra and Jović-Jovičić, Nataša and Banković, Predrag and Mojović, Zorica and Manojlović, Dragan and Jovanović, Dušan M.",
year = "2010",
abstract = "Modification and characterization of bentonite from location Bogovina, Serbia was performed in order to obtain material applicable in wastewater purification. The  LT 75μm bentonite fraction was used in organobentonite synthesis while the  LT 2μm bentonite fraction, obtained by hydroseparation was used in pillaring procedure. Organo-modification of bentonite was performed with (1-hexadecyl)trimethylammonium bromide (HDTMA-Br). Pillared bentonite was obtained using standard procedure. Al3+ and Fe3+ were incorporated in pillars in 4:1 ratio and applied as catalyst in catalytic wet peroxide oxidation. Differences in structure of starting and modified bentonites were established by XRD analysis and nitrogen physisorption on -196°C. The (001) smectite peak around 2θ = 6° shifts during the modification process. The Na-exchange process lowered d001 from 1.53 nm (2θ = 5.78°) for starting clay to 1.28 nm (2θ = 6.92°), but the clay retained its swelling properties. The pillaring process increased and fixed the basal spacing to 1.74 nm. Intercalation of HDTMA ions into smectite structure increased d001 to 2.00 nm for organobentonite. Specific surface area, SBET, was affected by particle size and type of modification. The samples with finer bentonite fraction had higher SBET due to increased smectite content. Na-exchanged bentonite samples had higher SBET value than starting clay samples of same granulation. Organo modification caused dramatic decrease in SBET value, while the pillaring process lead to an increase of SBET value. Adsorptive and catalytic purification of wastewaters containing dyes was tested using Acid Yellow 99 as a model dye. Na-exchanged bentonite had greater adsorption affinity for dye adsorption than raw bentonite owing to higher SBET. By organomodification this affinity was enhanced more than 70 times due to transition of bentonite surface from hydrophilic to organophilic. Al, Fe pillared bentonite was proven to be efficient in catalytic wet peroxide oxidation of Acid Yellow 99 dye at room temperature., Izvršena je modifikacija i karakterizacija bentonita radi dobijanja materijala za prečišćavanje otpadnih voda. Organo-modifikacija bentonita izvedena je pomoću heksadeciltrimetilamonijum-bromida. Pilareni bentonit dobijen je standardnim postupkom uz ugradnju Al3+ i Fe3+ jona u odnosu 4:1, i korišćen je kao katalizator za oksidativnu razgradnju u prisustvu vodonik-peroksida. Razlike u strukturi polaznog i modifikovanih bentonita utvrđene su rendgeno-strukturnom analizom i fizisorpcijom azota na -196°C. Ispitivano je adsorpciono i katalitičko prečišćavanje otpadnih voda koje sadrže boje, korišćenjem Acid Yellow 99 kao model boje. Izvršeno je poređenje katalitičkih i adsorpiconih svojstava modifikovanih bentonita.",
publisher = "Assoc Chemists & Chemical Engineers Of Serbia, Belgrade",
journal = "Hemijska industrija",
title = "Modified bentonite as adsorbent and catalyst for purification of wastewaters containing dyes, Modifikovani bentonit kao adsorbent i katalizator za prečišćavanje otpadnih voda koje sadrže boje",
volume = "64",
number = "3",
pages = "193-199",
doi = "10.2298/HEMIND091221023Z"
}

Žunić, M., Milutinović Nikolić, A., Jović-Jovičić, N., Banković, P., Mojović, Z., Manojlović, D.,& Jovanović, D. M.. (2010). Modified bentonite as adsorbent and catalyst for purification of wastewaters containing dyes. in Hemijska industrija
Assoc Chemists & Chemical Engineers Of Serbia, Belgrade., 64(3), 193-199.
https://doi.org/10.2298/HEMIND091221023Z

Žunić M, Milutinović Nikolić A, Jović-Jovičić N, Banković P, Mojović Z, Manojlović D, Jovanović DM. Modified bentonite as adsorbent and catalyst for purification of wastewaters containing dyes. in Hemijska industrija. 2010;64(3):193-199.
doi:10.2298/HEMIND091221023Z .

Žunić, Marija, Milutinović Nikolić, Aleksandra, Jović-Jovičić, Nataša, Banković, Predrag, Mojović, Zorica, Manojlović, Dragan, Jovanović, Dušan M., "Modified bentonite as adsorbent and catalyst for purification of wastewaters containing dyes" in Hemijska industrija, 64, no. 3 (2010):193-199,
https://doi.org/10.2298/HEMIND091221023Z . .

TY  - CONF
AU  - Žunić, Marija
AU  - Milutinović Nikolić, Aleksandra
AU  - Jović-Jovičić, Nataša
AU  - Banković, Predrag
AU  - Mojović, Zorica
AU  - Manojlović, Dragan
AU  - Jovanović, Dušan
PY  - 2009
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6988
AB  - Izvršena je modifikacija i karakterizacija bentonita s ciljem dobijanja nanomaterijala primenljivog u prečišćavanju otpadnih voda. Organo-modifikacija bentonita izvedena je pomoću heksadeciltrimetilamonijum-bromida. Pilareni bentonit dobijen je standardnim postupkom uz ugradnju Al3+ i Fe3+ jona u odnosu 4:1 i korišćen je kao katalizator za oksidativnu razgradnju u prisustvu vodonik-peroksida.
PB  - Institut tehničkih nauka Srpske akademije nauka i umetnosti
C3  - Program i knjiga apstrakata - VIII konferencija mladih istraživača - Nauka i inženjerstvo materijala
T1  - Modifikovani bentonit kao sorbent i katalizator za prečišćavanje otpadih voda koje sadrže boje
SP  - 25
EP  - 25
UR  - https://hdl.handle.net/21.15107/rcub_cer_6988
ER  - 

@conference{
author = "Žunić, Marija and Milutinović Nikolić, Aleksandra and Jović-Jovičić, Nataša and Banković, Predrag and Mojović, Zorica and Manojlović, Dragan and Jovanović, Dušan",
year = "2009",
abstract = "Izvršena je modifikacija i karakterizacija bentonita s ciljem dobijanja nanomaterijala primenljivog u prečišćavanju otpadnih voda. Organo-modifikacija bentonita izvedena je pomoću heksadeciltrimetilamonijum-bromida. Pilareni bentonit dobijen je standardnim postupkom uz ugradnju Al3+ i Fe3+ jona u odnosu 4:1 i korišćen je kao katalizator za oksidativnu razgradnju u prisustvu vodonik-peroksida.",
publisher = "Institut tehničkih nauka Srpske akademije nauka i umetnosti",
journal = "Program i knjiga apstrakata - VIII konferencija mladih istraživača - Nauka i inženjerstvo materijala",
title = "Modifikovani bentonit kao sorbent i katalizator za prečišćavanje otpadih voda koje sadrže boje",
pages = "25-25",
url = "https://hdl.handle.net/21.15107/rcub_cer_6988"
}

Žunić, M., Milutinović Nikolić, A., Jović-Jovičić, N., Banković, P., Mojović, Z., Manojlović, D.,& Jovanović, D.. (2009). Modifikovani bentonit kao sorbent i katalizator za prečišćavanje otpadih voda koje sadrže boje. in Program i knjiga apstrakata - VIII konferencija mladih istraživača - Nauka i inženjerstvo materijala
Institut tehničkih nauka Srpske akademije nauka i umetnosti., 25-25.
https://hdl.handle.net/21.15107/rcub_cer_6988

Žunić M, Milutinović Nikolić A, Jović-Jovičić N, Banković P, Mojović Z, Manojlović D, Jovanović D. Modifikovani bentonit kao sorbent i katalizator za prečišćavanje otpadih voda koje sadrže boje. in Program i knjiga apstrakata - VIII konferencija mladih istraživača - Nauka i inženjerstvo materijala. 2009;:25-25.
https://hdl.handle.net/21.15107/rcub_cer_6988 .

Žunić, Marija, Milutinović Nikolić, Aleksandra, Jović-Jovičić, Nataša, Banković, Predrag, Mojović, Zorica, Manojlović, Dragan, Jovanović, Dušan, "Modifikovani bentonit kao sorbent i katalizator za prečišćavanje otpadih voda koje sadrže boje" in Program i knjiga apstrakata - VIII konferencija mladih istraživača - Nauka i inženjerstvo materijala (2009):25-25,
https://hdl.handle.net/21.15107/rcub_cer_6988 .

TY  - JOUR
AU  - Ivanović-Šašić, Ana
AU  - Čupić, Željko
AU  - Kolar-Anić, Ljiljana
AU  - Janković, Marija M.
AU  - Anić, Slobodan
PY  - 2009
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/535
AB  - We applied multifractal analysis on time series obtained by deterministic simulation of the Bray-Liebhafsky oscillatory reaction. Large deviation spectrum was used to represent multifractal properties of the attractor. We obtained spectrums with two peaks, one in region of low and the other in region of high values of Holder exponent. Their intensity depends on flow rate. The method developed on the results from numerical simulations is tested on the experimental record from the same reaction system and multifractality of the time series is confirmed.
PB  - Maik Nauka/Interperiodica/Springer, New York
T2  - Russian Journal of Physical Chemistry A
T1  - Large deviation spectra of chaotic time series from Bray-Liebhafsky reaction
VL  - 83
IS  - 9
SP  - 1526
EP  - 1530
DO  - 10.1134/S0036024409090192
ER  - 

@article{
author = "Ivanović-Šašić, Ana and Čupić, Željko and Kolar-Anić, Ljiljana and Janković, Marija M. and Anić, Slobodan",
year = "2009",
abstract = "We applied multifractal analysis on time series obtained by deterministic simulation of the Bray-Liebhafsky oscillatory reaction. Large deviation spectrum was used to represent multifractal properties of the attractor. We obtained spectrums with two peaks, one in region of low and the other in region of high values of Holder exponent. Their intensity depends on flow rate. The method developed on the results from numerical simulations is tested on the experimental record from the same reaction system and multifractality of the time series is confirmed.",
publisher = "Maik Nauka/Interperiodica/Springer, New York",
journal = "Russian Journal of Physical Chemistry A",
title = "Large deviation spectra of chaotic time series from Bray-Liebhafsky reaction",
volume = "83",
number = "9",
pages = "1526-1530",
doi = "10.1134/S0036024409090192"
}

Ivanović-Šašić, A., Čupić, Ž., Kolar-Anić, L., Janković, M. M.,& Anić, S.. (2009). Large deviation spectra of chaotic time series from Bray-Liebhafsky reaction. in Russian Journal of Physical Chemistry A
Maik Nauka/Interperiodica/Springer, New York., 83(9), 1526-1530.
https://doi.org/10.1134/S0036024409090192

Ivanović-Šašić A, Čupić Ž, Kolar-Anić L, Janković MM, Anić S. Large deviation spectra of chaotic time series from Bray-Liebhafsky reaction. in Russian Journal of Physical Chemistry A. 2009;83(9):1526-1530.
doi:10.1134/S0036024409090192 .

Ivanović-Šašić, Ana, Čupić, Željko, Kolar-Anić, Ljiljana, Janković, Marija M., Anić, Slobodan, "Large deviation spectra of chaotic time series from Bray-Liebhafsky reaction" in Russian Journal of Physical Chemistry A, 83, no. 9 (2009):1526-1530,
https://doi.org/10.1134/S0036024409090192 . .

TY  - JOUR
AU  - Anić, Slobodan
AU  - Maksimović, Jelena
AU  - Lončarević, Davor
AU  - Pejić, Nataša
AU  - Čupić, Željko
PY  - 2009
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/544
AB  - The infuence of poly-4-vinylpyridine-co-divinylbenzene-Co2+ catalyst on the Bray-Liebhafsky (BL) oscillator used as the matrix for establishing catalyst's activity was analyzed. The addition of the catalyst do not change the dynamics of the reaction in the BL matrix, but the periods of the oscillatory evolution as well as the preoscillatory period (tau(1)) and the duration from the beginning of the reaction to the end of the oscillatory state (tau(end)). All experimental results are simulated satisfactory.
PB  - Maik Nauka/Interperiodica/Springer, New York
T2  - Russian Journal of Physical Chemistry A
T1  - Activity of polymer supported cobalt catalyst in the Bray-Liebhafsky oscillator
VL  - 83
IS  - 9
SP  - 1468
EP  - 1472
DO  - 10.1134/S003602440909009X
ER  - 

@article{
author = "Anić, Slobodan and Maksimović, Jelena and Lončarević, Davor and Pejić, Nataša and Čupić, Željko",
year = "2009",
abstract = "The infuence of poly-4-vinylpyridine-co-divinylbenzene-Co2+ catalyst on the Bray-Liebhafsky (BL) oscillator used as the matrix for establishing catalyst's activity was analyzed. The addition of the catalyst do not change the dynamics of the reaction in the BL matrix, but the periods of the oscillatory evolution as well as the preoscillatory period (tau(1)) and the duration from the beginning of the reaction to the end of the oscillatory state (tau(end)). All experimental results are simulated satisfactory.",
publisher = "Maik Nauka/Interperiodica/Springer, New York",
journal = "Russian Journal of Physical Chemistry A",
title = "Activity of polymer supported cobalt catalyst in the Bray-Liebhafsky oscillator",
volume = "83",
number = "9",
pages = "1468-1472",
doi = "10.1134/S003602440909009X"
}

Anić, S., Maksimović, J., Lončarević, D., Pejić, N.,& Čupić, Ž.. (2009). Activity of polymer supported cobalt catalyst in the Bray-Liebhafsky oscillator. in Russian Journal of Physical Chemistry A
Maik Nauka/Interperiodica/Springer, New York., 83(9), 1468-1472.
https://doi.org/10.1134/S003602440909009X

Anić S, Maksimović J, Lončarević D, Pejić N, Čupić Ž. Activity of polymer supported cobalt catalyst in the Bray-Liebhafsky oscillator. in Russian Journal of Physical Chemistry A. 2009;83(9):1468-1472.
doi:10.1134/S003602440909009X .

Anić, Slobodan, Maksimović, Jelena, Lončarević, Davor, Pejić, Nataša, Čupić, Željko, "Activity of polymer supported cobalt catalyst in the Bray-Liebhafsky oscillator" in Russian Journal of Physical Chemistry A, 83, no. 9 (2009):1468-1472,
https://doi.org/10.1134/S003602440909009X . .

TY  - JOUR
AU  - Jelić, S.
AU  - Čupić, Željko
AU  - Kolar-Anić, Ljiljana
AU  - Vukojević, V.
PY  - 2009
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/626
AB  - Two methods for dynamic systems analysis, Stoichiometric Network Analysis (SNA) and Quenching of Small Amplitude Oscillations (QA), are used to study the behaviour of a vital biological system. Both methods use geometric approaches for the study of complex reaction systems. In SNA, methods based on convex polytopes geometry are applied for stability analysis and optimization of reaction networks. QA relies on a geometric representation of the concentration phase space, introduces the concept of manifolds and the singular perturbation theory to study the dynamics of complex processes. The analyzed system, the Hypothalamic-Pituitary-Adrenal (HPA) axis, as a major constituent of the neuroendocrine system has a critical role in integrating biological responses in basal conditions and during stress. Self-regulation in the HPA system was modeled through a positive and negative feedback effect of Cortisol. A systematically reduced low-dimensional model of HPA activity in humans was fine-tuned by SNA, until quantitative agreement with experimental findings was achieved. By QA, we revealed an important dynamic regulatory mechanism that is a natural consequence of the intrinsic rhythmicity of the considered system.
T2  - International Journal of Nonlinear Sciences and Numerical Simulation
T1  - Predictive modeling of the hypothalamic-pituitary-adrenal (HPA) function. dynamic systems theory approach by stoichiometric network analysis and quenching small amplitude oscillations
VL  - 10
IS  - 11-12
SP  - 1451
EP  - 1472
UR  - https://hdl.handle.net/21.15107/rcub_cer_626
ER  - 

@article{
author = "Jelić, S. and Čupić, Željko and Kolar-Anić, Ljiljana and Vukojević, V.",
year = "2009",
abstract = "Two methods for dynamic systems analysis, Stoichiometric Network Analysis (SNA) and Quenching of Small Amplitude Oscillations (QA), are used to study the behaviour of a vital biological system. Both methods use geometric approaches for the study of complex reaction systems. In SNA, methods based on convex polytopes geometry are applied for stability analysis and optimization of reaction networks. QA relies on a geometric representation of the concentration phase space, introduces the concept of manifolds and the singular perturbation theory to study the dynamics of complex processes. The analyzed system, the Hypothalamic-Pituitary-Adrenal (HPA) axis, as a major constituent of the neuroendocrine system has a critical role in integrating biological responses in basal conditions and during stress. Self-regulation in the HPA system was modeled through a positive and negative feedback effect of Cortisol. A systematically reduced low-dimensional model of HPA activity in humans was fine-tuned by SNA, until quantitative agreement with experimental findings was achieved. By QA, we revealed an important dynamic regulatory mechanism that is a natural consequence of the intrinsic rhythmicity of the considered system.",
journal = "International Journal of Nonlinear Sciences and Numerical Simulation",
title = "Predictive modeling of the hypothalamic-pituitary-adrenal (HPA) function. dynamic systems theory approach by stoichiometric network analysis and quenching small amplitude oscillations",
volume = "10",
number = "11-12",
pages = "1451-1472",
url = "https://hdl.handle.net/21.15107/rcub_cer_626"
}

Jelić, S., Čupić, Ž., Kolar-Anić, L.,& Vukojević, V.. (2009). Predictive modeling of the hypothalamic-pituitary-adrenal (HPA) function. dynamic systems theory approach by stoichiometric network analysis and quenching small amplitude oscillations. in International Journal of Nonlinear Sciences and Numerical Simulation, 10(11-12), 1451-1472.
https://hdl.handle.net/21.15107/rcub_cer_626

Jelić S, Čupić Ž, Kolar-Anić L, Vukojević V. Predictive modeling of the hypothalamic-pituitary-adrenal (HPA) function. dynamic systems theory approach by stoichiometric network analysis and quenching small amplitude oscillations. in International Journal of Nonlinear Sciences and Numerical Simulation. 2009;10(11-12):1451-1472.
https://hdl.handle.net/21.15107/rcub_cer_626 .

Jelić, S., Čupić, Željko, Kolar-Anić, Ljiljana, Vukojević, V., "Predictive modeling of the hypothalamic-pituitary-adrenal (HPA) function. dynamic systems theory approach by stoichiometric network analysis and quenching small amplitude oscillations" in International Journal of Nonlinear Sciences and Numerical Simulation, 10, no. 11-12 (2009):1451-1472,
https://hdl.handle.net/21.15107/rcub_cer_626 .

TY  - JOUR
AU  - Rožić, Ljiljana
AU  - Vuković, Zorica
AU  - Novaković, Tatjana
AU  - Petrović, Srđan
PY  - 2009
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/496
AB  - Active porous alumina was prepared via a sol-gel method and subjected to thermal treatment in the temperature range 500 - 1200°C. The effect of calcinations temperature, polyethylen glycol combined with La3+, added to the boehmite sol, on activated alumina surface area, pore size, pore distribution and surface fractal dimension was studied. The N2 adsorption/desorption analyses of samples was performed to determine the adsorption isotherms, hysteresis and the textural properties. The adding of La3+ to boehmite sol inhibits the surface area loss of produced aluminas during its calcinations at high temperatures. Thermal treatment of La3+-doped alumina samples at temperature from 500 to 1200°C causes a considerable decrease of its specific surface area from 280 to 65 m2g-1, pore volume from 0,44 to 0,27 cm3g-1, increase of its pore size data from 3 to 6 nm and increase of its surface fractal dimension form 2,068 to 2,192. From behavior of surface fractal dimension of doped alumina samples can be concluded that there is no phase transformation to α-Al2O3 in all temperature range, i.e. addition of lanthanum to boehmite sol in atomic ratio of 0,03 La3+/Al3+ can raise phase transformation temperature to α-Al2O3 above 1200°C. .
AB  - Aktivni porozni aluminijumoksid, dobijen sol - gel metodom, je termički obrađen na povišenim temperaturama u intervalu od 500 do 1200°C. Ispitivan je uticaj temperature termičke obrade i dodatka polietilen glikola (PEG) i La3+-jona na specifičnu površinu, zapreminu pora i prečnik pora, kao i fraktalnu dimenziju površine aktiviranog aluminijum-oksida. Na osnovu podataka iz adsorpciono-desorpcionih izotermi azota određen je tip pora i izračunate su vrednosti osnovnih parametara teksturalnih svojstava uzoraka. Porast temperature termičke obrade prouzrokovao je smanjenje specifične površine sa 280 na 65 m2g-1, zapremine pora sa 0,45 na 0,27 cm3g-1, porast preovlađujućeg prečnika pora od 3 do 6 nm i porast fraktalne dimenzije površine od 2,068 do 2,192. Na osnovu dobijenih rezultata rendgenostrukturne analize može se zaključiti da u ispitivanom temperaturnom intervalu ne dolazi do fazne transformacije u α-Al2O3 i da dodatak lantana u odnosu 0,03 molLa3+/ molAl3+ pomera faznu transformaciju aktiviranog aluminijum-oksida u α-Al2O3 iznad 1200°C. .
T2  - Zbornik radova Tehnološkog fakulteta, Leskovac
T1  - Effects of thermal treatment on the microstructures of sol-gel synthesized La3+ + PEG doped alumina
T1  - Uticaj termičkog tretmana na mikro-strukturu alumine sa dodatkom PEG-a i La3+ dobijene sol-gel postupkom
IS  - 19
SP  - 143
EP  - 149
UR  - https://hdl.handle.net/21.15107/rcub_cer_496
ER  - 

@article{
author = "Rožić, Ljiljana and Vuković, Zorica and Novaković, Tatjana and Petrović, Srđan",
year = "2009",
abstract = "Active porous alumina was prepared via a sol-gel method and subjected to thermal treatment in the temperature range 500 - 1200°C. The effect of calcinations temperature, polyethylen glycol combined with La3+, added to the boehmite sol, on activated alumina surface area, pore size, pore distribution and surface fractal dimension was studied. The N2 adsorption/desorption analyses of samples was performed to determine the adsorption isotherms, hysteresis and the textural properties. The adding of La3+ to boehmite sol inhibits the surface area loss of produced aluminas during its calcinations at high temperatures. Thermal treatment of La3+-doped alumina samples at temperature from 500 to 1200°C causes a considerable decrease of its specific surface area from 280 to 65 m2g-1, pore volume from 0,44 to 0,27 cm3g-1, increase of its pore size data from 3 to 6 nm and increase of its surface fractal dimension form 2,068 to 2,192. From behavior of surface fractal dimension of doped alumina samples can be concluded that there is no phase transformation to α-Al2O3 in all temperature range, i.e. addition of lanthanum to boehmite sol in atomic ratio of 0,03 La3+/Al3+ can raise phase transformation temperature to α-Al2O3 above 1200°C. ., Aktivni porozni aluminijumoksid, dobijen sol - gel metodom, je termički obrađen na povišenim temperaturama u intervalu od 500 do 1200°C. Ispitivan je uticaj temperature termičke obrade i dodatka polietilen glikola (PEG) i La3+-jona na specifičnu površinu, zapreminu pora i prečnik pora, kao i fraktalnu dimenziju površine aktiviranog aluminijum-oksida. Na osnovu podataka iz adsorpciono-desorpcionih izotermi azota određen je tip pora i izračunate su vrednosti osnovnih parametara teksturalnih svojstava uzoraka. Porast temperature termičke obrade prouzrokovao je smanjenje specifične površine sa 280 na 65 m2g-1, zapremine pora sa 0,45 na 0,27 cm3g-1, porast preovlađujućeg prečnika pora od 3 do 6 nm i porast fraktalne dimenzije površine od 2,068 do 2,192. Na osnovu dobijenih rezultata rendgenostrukturne analize može se zaključiti da u ispitivanom temperaturnom intervalu ne dolazi do fazne transformacije u α-Al2O3 i da dodatak lantana u odnosu 0,03 molLa3+/ molAl3+ pomera faznu transformaciju aktiviranog aluminijum-oksida u α-Al2O3 iznad 1200°C. .",
journal = "Zbornik radova Tehnološkog fakulteta, Leskovac",
title = "Effects of thermal treatment on the microstructures of sol-gel synthesized La3+ + PEG doped alumina, Uticaj termičkog tretmana na mikro-strukturu alumine sa dodatkom PEG-a i La3+ dobijene sol-gel postupkom",
number = "19",
pages = "143-149",
url = "https://hdl.handle.net/21.15107/rcub_cer_496"
}

Rožić, L., Vuković, Z., Novaković, T.,& Petrović, S.. (2009). Effects of thermal treatment on the microstructures of sol-gel synthesized La3+ + PEG doped alumina. in Zbornik radova Tehnološkog fakulteta, Leskovac(19), 143-149.
https://hdl.handle.net/21.15107/rcub_cer_496

Rožić L, Vuković Z, Novaković T, Petrović S. Effects of thermal treatment on the microstructures of sol-gel synthesized La3+ + PEG doped alumina. in Zbornik radova Tehnološkog fakulteta, Leskovac. 2009;(19):143-149.
https://hdl.handle.net/21.15107/rcub_cer_496 .

Rožić, Ljiljana, Vuković, Zorica, Novaković, Tatjana, Petrović, Srđan, "Effects of thermal treatment on the microstructures of sol-gel synthesized La3+ + PEG doped alumina" in Zbornik radova Tehnološkog fakulteta, Leskovac, no. 19 (2009):143-149,
https://hdl.handle.net/21.15107/rcub_cer_496 .