TY  - CONF
AU  - Patarić, Aleksandra
AU  - Marković, Gordana
AU  - Đorđević, Nataša G.
AU  - Mihajlović, Slavica
AU  - Mihailović, Marija
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6248
AB  - Cobalt–chromium–molybdenum (CoCrMo) alloys are known for medical use due to their biocompatibility, corrosion and  wear resistance. The chemical and phase composition, as well as microstructure of the alloy directly affect the mechanical  properties. In this investigation, CoCrMo alloy samples were obtained by vacuum precise casting. The procedure of  melting and casting process as well as their parameters are given. Molds fabricated of copper, gray iron, steel, ceramics  and graphite were used during the casting process. In this way, the cooling rate influence on the obtained microstructure  was examined. Besides, different casting temperatures (1400°C, 1450°C and 1500°C) were applied for each kind of mold.  After metallographic preparation, the microstructure was examined on the cross section of samples by optical microscopy.  The obtained results show that by increasing the cooling rate, the microstructure of samples become finer and more  homogeneous.
PB  - Association of Metallurgical Engineers of Serbia (AMES)
C3  - Proceedings of the 5th Metallurgical and Materials Engineering Congress of South-East Europe, 7-10.06.2023, Trebinje, Bosnia and Herzegovina
T1  - Microstructure assessment of Co alloy intended for dentistry
SP  - 221
EP  - 225
UR  - https://hdl.handle.net/21.15107/rcub_cer_6248
ER  - 

@conference{
author = "Patarić, Aleksandra and Marković, Gordana and Đorđević, Nataša G. and Mihajlović, Slavica and Mihailović, Marija",
year = "2023",
abstract = "Cobalt–chromium–molybdenum (CoCrMo) alloys are known for medical use due to their biocompatibility, corrosion and  wear resistance. The chemical and phase composition, as well as microstructure of the alloy directly affect the mechanical  properties. In this investigation, CoCrMo alloy samples were obtained by vacuum precise casting. The procedure of  melting and casting process as well as their parameters are given. Molds fabricated of copper, gray iron, steel, ceramics  and graphite were used during the casting process. In this way, the cooling rate influence on the obtained microstructure  was examined. Besides, different casting temperatures (1400°C, 1450°C and 1500°C) were applied for each kind of mold.  After metallographic preparation, the microstructure was examined on the cross section of samples by optical microscopy.  The obtained results show that by increasing the cooling rate, the microstructure of samples become finer and more  homogeneous.",
publisher = "Association of Metallurgical Engineers of Serbia (AMES)",
journal = "Proceedings of the 5th Metallurgical and Materials Engineering Congress of South-East Europe, 7-10.06.2023, Trebinje, Bosnia and Herzegovina",
title = "Microstructure assessment of Co alloy intended for dentistry",
pages = "221-225",
url = "https://hdl.handle.net/21.15107/rcub_cer_6248"
}

Patarić, A., Marković, G., Đorđević, N. G., Mihajlović, S.,& Mihailović, M.. (2023). Microstructure assessment of Co alloy intended for dentistry. in Proceedings of the 5th Metallurgical and Materials Engineering Congress of South-East Europe, 7-10.06.2023, Trebinje, Bosnia and Herzegovina
Association of Metallurgical Engineers of Serbia (AMES)., 221-225.
https://hdl.handle.net/21.15107/rcub_cer_6248

Patarić A, Marković G, Đorđević NG, Mihajlović S, Mihailović M. Microstructure assessment of Co alloy intended for dentistry. in Proceedings of the 5th Metallurgical and Materials Engineering Congress of South-East Europe, 7-10.06.2023, Trebinje, Bosnia and Herzegovina. 2023;:221-225.
https://hdl.handle.net/21.15107/rcub_cer_6248 .

Patarić, Aleksandra, Marković, Gordana, Đorđević, Nataša G., Mihajlović, Slavica, Mihailović, Marija, "Microstructure assessment of Co alloy intended for dentistry" in Proceedings of the 5th Metallurgical and Materials Engineering Congress of South-East Europe, 7-10.06.2023, Trebinje, Bosnia and Herzegovina (2023):221-225,
https://hdl.handle.net/21.15107/rcub_cer_6248 .

TY  - JOUR
AU  - Đorđević, Nataša
AU  - Vlahović, Milica
AU  - Martinović, Sanja
AU  - Mihajlović, Slavica
AU  - Kašić, Vladan
AU  - Grubišić, Mirko
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7201
AB  - Concrete  is  a  material  that  has  been  used  for  centuries  and  is  often modified using polymers. In the last fifty years, synthetic polymers have been used for the modification of concrete, but also for the production of concrete. In recent decades, sulfur concrete has been an interesting product that can be used mainly in low-rise construction due to its characteristics. In this work, we used the starting mixture  for  the  preparation  of  sulfur  concrete  (sand,  elemental  sulfur  with  the addition of modified sulfur and fillers) heated to a temperature of 120 ºC to 170 ºC and  homogenized.  The  results  of  previous  research  on  the  production  of  sulfur concrete showed that the density of the obtained product changes depending on the type  as  well  as  the  amount  of  filler  added  to  the  basic  mixture  based  on  raw materials. Talc, microsilicon, plate alumina and fly ash were used as fillers. The amounts of fillers were 0%, 1%, 3%, 5%, 7% and 10%.
PB  - Belgrade : University of Belgrade, Faculty of Mining and Geology
T2  - Undeground mining engineering
T1  - Influence of type and quantity of filler on change of density of sulfur concrete
IS  - 42
SP  - 19
EP  - 25
DO  - 10.5937/podrad2342019Q
ER  - 

@article{
author = "Đorđević, Nataša and Vlahović, Milica and Martinović, Sanja and Mihajlović, Slavica and Kašić, Vladan and Grubišić, Mirko",
year = "2023",
abstract = "Concrete  is  a  material  that  has  been  used  for  centuries  and  is  often modified using polymers. In the last fifty years, synthetic polymers have been used for the modification of concrete, but also for the production of concrete. In recent decades, sulfur concrete has been an interesting product that can be used mainly in low-rise construction due to its characteristics. In this work, we used the starting mixture  for  the  preparation  of  sulfur  concrete  (sand,  elemental  sulfur  with  the addition of modified sulfur and fillers) heated to a temperature of 120 ºC to 170 ºC and  homogenized.  The  results  of  previous  research  on  the  production  of  sulfur concrete showed that the density of the obtained product changes depending on the type  as  well  as  the  amount  of  filler  added  to  the  basic  mixture  based  on  raw materials. Talc, microsilicon, plate alumina and fly ash were used as fillers. The amounts of fillers were 0%, 1%, 3%, 5%, 7% and 10%.",
publisher = "Belgrade : University of Belgrade, Faculty of Mining and Geology",
journal = "Undeground mining engineering",
title = "Influence of type and quantity of filler on change of density of sulfur concrete",
number = "42",
pages = "19-25",
doi = "10.5937/podrad2342019Q"
}

Đorđević, N., Vlahović, M., Martinović, S., Mihajlović, S., Kašić, V.,& Grubišić, M.. (2023). Influence of type and quantity of filler on change of density of sulfur concrete. in Undeground mining engineering
Belgrade : University of Belgrade, Faculty of Mining and Geology.(42), 19-25.
https://doi.org/10.5937/podrad2342019Q

Đorđević N, Vlahović M, Martinović S, Mihajlović S, Kašić V, Grubišić M. Influence of type and quantity of filler on change of density of sulfur concrete. in Undeground mining engineering. 2023;(42):19-25.
doi:10.5937/podrad2342019Q .

Đorđević, Nataša, Vlahović, Milica, Martinović, Sanja, Mihajlović, Slavica, Kašić, Vladan, Grubišić, Mirko, "Influence of type and quantity of filler on change of density of sulfur concrete" in Undeground mining engineering, no. 42 (2023):19-25,
https://doi.org/10.5937/podrad2342019Q . .

TY  - JOUR
AU  - Đorđević, Nataša
AU  - Vlahović, Milica
AU  - Mihajlović, Slavica
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7197
AB  - The aim of this research was to obtain an initial characterization of  the  BaO  and  TiO2components,  as  well  as  to  conduct  preliminary research into the possibility of activating the initial components in order toobtain barium titanate. Chemical and X-ray structural analysis of the initial components  was  performed.  In  order  to  determine  the  possibility  of applying a mechanochemical activator and the activation time in which the first intermediate compounds were formed by the activation of the starting substances, the system was activated for 30 minutes. After this, an X-ray structural analysis was performed and certain changes in the crystal lattice of  the  starting components  were  made. X-ray  structural analysis  showed that  during  grinding,  amorphization  of  the  initial  components  occurred, which is the first stage in the process of obtaining titanate, as well as the presence  of  a  small  amount  of  barium  titanate,  which  is  indicating  the presence of an intermediate compound in the process of finally obtaining barium titanate.
PB  - Belgrade : University of Belgrade, Faculty of Mining and Geology
T2  - Undeground mining engineering
T1  - X-ray structural analysis of the BaO and TiO2 starting compounds and initial mechanochemical activation
IS  - 42
SP  - 37
EP  - 46
DO  - 10.5937/podrad2342037Q
ER  - 

@article{
author = "Đorđević, Nataša and Vlahović, Milica and Mihajlović, Slavica",
year = "2023",
abstract = "The aim of this research was to obtain an initial characterization of  the  BaO  and  TiO2components,  as  well  as  to  conduct  preliminary research into the possibility of activating the initial components in order toobtain barium titanate. Chemical and X-ray structural analysis of the initial components  was  performed.  In  order  to  determine  the  possibility  of applying a mechanochemical activator and the activation time in which the first intermediate compounds were formed by the activation of the starting substances, the system was activated for 30 minutes. After this, an X-ray structural analysis was performed and certain changes in the crystal lattice of  the  starting components  were  made. X-ray  structural analysis  showed that  during  grinding,  amorphization  of  the  initial  components  occurred, which is the first stage in the process of obtaining titanate, as well as the presence  of  a  small  amount  of  barium  titanate,  which  is  indicating  the presence of an intermediate compound in the process of finally obtaining barium titanate.",
publisher = "Belgrade : University of Belgrade, Faculty of Mining and Geology",
journal = "Undeground mining engineering",
title = "X-ray structural analysis of the BaO and TiO2 starting compounds and initial mechanochemical activation",
number = "42",
pages = "37-46",
doi = "10.5937/podrad2342037Q"
}

Đorđević, N., Vlahović, M.,& Mihajlović, S.. (2023). X-ray structural analysis of the BaO and TiO2 starting compounds and initial mechanochemical activation. in Undeground mining engineering
Belgrade : University of Belgrade, Faculty of Mining and Geology.(42), 37-46.
https://doi.org/10.5937/podrad2342037Q

Đorđević N, Vlahović M, Mihajlović S. X-ray structural analysis of the BaO and TiO2 starting compounds and initial mechanochemical activation. in Undeground mining engineering. 2023;(42):37-46.
doi:10.5937/podrad2342037Q .

Đorđević, Nataša, Vlahović, Milica, Mihajlović, Slavica, "X-ray structural analysis of the BaO and TiO2 starting compounds and initial mechanochemical activation" in Undeground mining engineering, no. 42 (2023):37-46,
https://doi.org/10.5937/podrad2342037Q . .

TY  - JOUR
AU  - Darmanović, Darinka
AU  - Radanović, Dušanka
AU  - Jevtović, Mima
AU  - Turel, Iztok
AU  - Pevec, Andrej
AU  - Milčić, Miloš
AU  - Gruden, Maja
AU  - Zlatar, Matija
AU  - Đorđević, Nataša G.
AU  - Anđelković, Katarina
AU  - Čobeljić, Božidar
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5109
AB  - Two Co(III) complexes with condensation product of thiosemicarbazide and 2-acetylthiazole (HL1 ligand, (E)-2-(1-(thiazol-2-yl)ethylidene)hydrazine-1-carbothioamide) and the condensation product of 2-acetylpyridine and Girard's P reagent (HL2Cl ligand, (E)-1-(2-oxo-2-(2-(1-(pyridin-2-yl)ethylidene)hydrazinyl)ethyl)pyridin-1-ium chloride) have been synthesized and characterized based on the results of single-crystal X-ray diffraction, NMR and IR spectroscopy and elemental analysis. Cobalt(III) complex with HL1 ligand, [Co(L1)2]BF4⋅H2O (1), is bis octahedral complex in which two deprotonated ligand molecules coordinate in a mer arrangement through two NNS sets of donor atoms. In cobalt(III) complex with HL2Cl, [Co(L2)(N3)3] (2), the ligand is coordinated in deprotonated, formally neutral, form to Co(III) ion in tridentate fashion through NNO set of donor atoms, and the other three coordination sites of a monokis octahedron are occupied by meridionally coordinated azide anions. DFT calculations were performed to elucidate coordination preferences of these ligands toward Co(III) ion.
PB  - Elsevier
T2  - Journal of Molecular Structure
T1  - Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation
VL  - 1266
SP  - 133509
DO  - 10.1016/j.molstruc.2022.133509
ER  - 

@article{
author = "Darmanović, Darinka and Radanović, Dušanka and Jevtović, Mima and Turel, Iztok and Pevec, Andrej and Milčić, Miloš and Gruden, Maja and Zlatar, Matija and Đorđević, Nataša G. and Anđelković, Katarina and Čobeljić, Božidar",
year = "2022",
abstract = "Two Co(III) complexes with condensation product of thiosemicarbazide and 2-acetylthiazole (HL1 ligand, (E)-2-(1-(thiazol-2-yl)ethylidene)hydrazine-1-carbothioamide) and the condensation product of 2-acetylpyridine and Girard's P reagent (HL2Cl ligand, (E)-1-(2-oxo-2-(2-(1-(pyridin-2-yl)ethylidene)hydrazinyl)ethyl)pyridin-1-ium chloride) have been synthesized and characterized based on the results of single-crystal X-ray diffraction, NMR and IR spectroscopy and elemental analysis. Cobalt(III) complex with HL1 ligand, [Co(L1)2]BF4⋅H2O (1), is bis octahedral complex in which two deprotonated ligand molecules coordinate in a mer arrangement through two NNS sets of donor atoms. In cobalt(III) complex with HL2Cl, [Co(L2)(N3)3] (2), the ligand is coordinated in deprotonated, formally neutral, form to Co(III) ion in tridentate fashion through NNO set of donor atoms, and the other three coordination sites of a monokis octahedron are occupied by meridionally coordinated azide anions. DFT calculations were performed to elucidate coordination preferences of these ligands toward Co(III) ion.",
publisher = "Elsevier",
journal = "Journal of Molecular Structure",
title = "Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation",
volume = "1266",
pages = "133509",
doi = "10.1016/j.molstruc.2022.133509"
}

Darmanović, D., Radanović, D., Jevtović, M., Turel, I., Pevec, A., Milčić, M., Gruden, M., Zlatar, M., Đorđević, N. G., Anđelković, K.,& Čobeljić, B.. (2022). Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation. in Journal of Molecular Structure
Elsevier., 1266, 133509.
https://doi.org/10.1016/j.molstruc.2022.133509

Darmanović D, Radanović D, Jevtović M, Turel I, Pevec A, Milčić M, Gruden M, Zlatar M, Đorđević NG, Anđelković K, Čobeljić B. Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation. in Journal of Molecular Structure. 2022;1266:133509.
doi:10.1016/j.molstruc.2022.133509 .

Darmanović, Darinka, Radanović, Dušanka, Jevtović, Mima, Turel, Iztok, Pevec, Andrej, Milčić, Miloš, Gruden, Maja, Zlatar, Matija, Đorđević, Nataša G., Anđelković, Katarina, Čobeljić, Božidar, "Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation" in Journal of Molecular Structure, 1266 (2022):133509,
https://doi.org/10.1016/j.molstruc.2022.133509 . .

TY  - DATA
AU  - Darmanović, Darinka
AU  - Radanović, Dušanka
AU  - Jevtović, Mima
AU  - Turel, Iztok
AU  - Pevec, Andrej
AU  - Milčić, Miloš
AU  - Gruden, Maja
AU  - Zlatar, Matija
AU  - Đorđević, Nataša G.
AU  - Anđelković, Katarina
AU  - Čobeljić, Božidar
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5110
AB  - YEJPEM: Space Group: P b c a (61), Cell: a 17.8984(5)Å b 12.1563(3)Å c 18.9956(5)Å, α 90° β 90° γ 90°
PB  - The Cambridge Crystallographic Data Centre (CCDC)
T1  - CCDC 2168741: Experimental Crystal Structure Determination. Crystallographic data for: "Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation"
DO  - 10.5517/ccdc.csd.cc2bsrd9
ER  - 

@misc{
author = "Darmanović, Darinka and Radanović, Dušanka and Jevtović, Mima and Turel, Iztok and Pevec, Andrej and Milčić, Miloš and Gruden, Maja and Zlatar, Matija and Đorđević, Nataša G. and Anđelković, Katarina and Čobeljić, Božidar",
year = "2022",
abstract = "YEJPEM: Space Group: P b c a (61), Cell: a 17.8984(5)Å b 12.1563(3)Å c 18.9956(5)Å, α 90° β 90° γ 90°",
publisher = "The Cambridge Crystallographic Data Centre (CCDC)",
title = "CCDC 2168741: Experimental Crystal Structure Determination. Crystallographic data for: "Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation"",
doi = "10.5517/ccdc.csd.cc2bsrd9"
}

Darmanović, D., Radanović, D., Jevtović, M., Turel, I., Pevec, A., Milčić, M., Gruden, M., Zlatar, M., Đorđević, N. G., Anđelković, K.,& Čobeljić, B.. (2022). CCDC 2168741: Experimental Crystal Structure Determination. Crystallographic data for: "Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation". 
The Cambridge Crystallographic Data Centre (CCDC)..
https://doi.org/10.5517/ccdc.csd.cc2bsrd9

Darmanović D, Radanović D, Jevtović M, Turel I, Pevec A, Milčić M, Gruden M, Zlatar M, Đorđević NG, Anđelković K, Čobeljić B. CCDC 2168741: Experimental Crystal Structure Determination. Crystallographic data for: "Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation". 2022;.
doi:10.5517/ccdc.csd.cc2bsrd9 .

Darmanović, Darinka, Radanović, Dušanka, Jevtović, Mima, Turel, Iztok, Pevec, Andrej, Milčić, Miloš, Gruden, Maja, Zlatar, Matija, Đorđević, Nataša G., Anđelković, Katarina, Čobeljić, Božidar, "CCDC 2168741: Experimental Crystal Structure Determination. Crystallographic data for: "Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation"" (2022),
https://doi.org/10.5517/ccdc.csd.cc2bsrd9 . .

TY  - DATA
AU  - Darmanović, Darinka
AU  - Radanović, Dušanka
AU  - Jevtović, Mima
AU  - Turel, Iztok
AU  - Pevec, Andrej
AU  - Milčić, Miloš
AU  - Gruden, Maja
AU  - Zlatar, Matija
AU  - Đorđević, Nataša G.
AU  - Anđelković, Katarina
AU  - Čobeljić, Božidar
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5111
AB  - YEJPIQ: Space Group: P 1 (2), Cell: a 7.7052(3)Å b 8.6197(6)Å c 14.6157(8)Å, α 78.908(5)° β 84.048(4)° γ 69.181(5)°
PB  - The Cambridge Crystallographic Data Centre (CCDC)
T1  - CCDC 2168742: Experimental Crystal Structure Determination. Crystallographic data for: "Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation"
DO  - 10.5517/ccdc.csd.cc2bsrfb
ER  - 

@misc{
author = "Darmanović, Darinka and Radanović, Dušanka and Jevtović, Mima and Turel, Iztok and Pevec, Andrej and Milčić, Miloš and Gruden, Maja and Zlatar, Matija and Đorđević, Nataša G. and Anđelković, Katarina and Čobeljić, Božidar",
year = "2022",
abstract = "YEJPIQ: Space Group: P 1 (2), Cell: a 7.7052(3)Å b 8.6197(6)Å c 14.6157(8)Å, α 78.908(5)° β 84.048(4)° γ 69.181(5)°",
publisher = "The Cambridge Crystallographic Data Centre (CCDC)",
title = "CCDC 2168742: Experimental Crystal Structure Determination. Crystallographic data for: "Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation"",
doi = "10.5517/ccdc.csd.cc2bsrfb"
}

Darmanović, D., Radanović, D., Jevtović, M., Turel, I., Pevec, A., Milčić, M., Gruden, M., Zlatar, M., Đorđević, N. G., Anđelković, K.,& Čobeljić, B.. (2022). CCDC 2168742: Experimental Crystal Structure Determination. Crystallographic data for: "Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation". 
The Cambridge Crystallographic Data Centre (CCDC)..
https://doi.org/10.5517/ccdc.csd.cc2bsrfb

Darmanović D, Radanović D, Jevtović M, Turel I, Pevec A, Milčić M, Gruden M, Zlatar M, Đorđević NG, Anđelković K, Čobeljić B. CCDC 2168742: Experimental Crystal Structure Determination. Crystallographic data for: "Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation". 2022;.
doi:10.5517/ccdc.csd.cc2bsrfb .

Darmanović, Darinka, Radanović, Dušanka, Jevtović, Mima, Turel, Iztok, Pevec, Andrej, Milčić, Miloš, Gruden, Maja, Zlatar, Matija, Đorđević, Nataša G., Anđelković, Katarina, Čobeljić, Božidar, "CCDC 2168742: Experimental Crystal Structure Determination. Crystallographic data for: "Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation"" (2022),
https://doi.org/10.5517/ccdc.csd.cc2bsrfb . .

TY  - DATA
AU  - Darmanović, Darinka
AU  - Radanović, Dušanka
AU  - Jevtović, Mima
AU  - Turel, Iztok
AU  - Pevec, Andrej
AU  - Milčić, Miloš
AU  - Gruden, Maja
AU  - Zlatar, Matija
AU  - Đorđević, Nataša G.
AU  - Anđelković, Katarina
AU  - Čobeljić, Božidar
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5112
AB  - Selected bond lengths (Å) and angles (°) of complexes 1 and 2. Comparison of Co-Nthiazole, Co-Nimine and Co-Sthiolate bond lengths (Å) in octahedral Co(III)-N4S2 complexes with thiosemicarbazone based ligands. Comparison of Co-Npy, Co-Nimine, Co-Nazide and Co-Oenolate bond lengths (Å) in octahedral Co(III)N4O2–Co(III)N2O(N3)3 complexes with hydrazone and azide ligands.Hydrogen-bond parameters for complex 1.Intermolecular p×××p interaction parameters for complex 2. Hydrogen-bond parameters for complex 2.Crystal packing of 1 showing self-assembled complex cations within a layer parallel with the (001) lattice plane by means of intermolecular N–H×××N and N–H×××S hydrogen bonds and (b) Intermolecular p×××p interactions between thiazole rings.Crystal packing of 2 showing 2D assembly parallel with the (10-1) lattice plane generated by intermolecular p×××p interactions and C–H×××N hydrogen bonds.Cartesian coordinates of all DFT optimized structures
PB  - Elsevier
T2  - Journal of Molecular Structure
T1  - Supplementary material for: "Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation"
UR  - https://hdl.handle.net/21.15107/rcub_cer_5112
ER  - 

@misc{
author = "Darmanović, Darinka and Radanović, Dušanka and Jevtović, Mima and Turel, Iztok and Pevec, Andrej and Milčić, Miloš and Gruden, Maja and Zlatar, Matija and Đorđević, Nataša G. and Anđelković, Katarina and Čobeljić, Božidar",
year = "2022",
abstract = "Selected bond lengths (Å) and angles (°) of complexes 1 and 2. Comparison of Co-Nthiazole, Co-Nimine and Co-Sthiolate bond lengths (Å) in octahedral Co(III)-N4S2 complexes with thiosemicarbazone based ligands. Comparison of Co-Npy, Co-Nimine, Co-Nazide and Co-Oenolate bond lengths (Å) in octahedral Co(III)N4O2–Co(III)N2O(N3)3 complexes with hydrazone and azide ligands.Hydrogen-bond parameters for complex 1.Intermolecular p×××p interaction parameters for complex 2. Hydrogen-bond parameters for complex 2.Crystal packing of 1 showing self-assembled complex cations within a layer parallel with the (001) lattice plane by means of intermolecular N–H×××N and N–H×××S hydrogen bonds and (b) Intermolecular p×××p interactions between thiazole rings.Crystal packing of 2 showing 2D assembly parallel with the (10-1) lattice plane generated by intermolecular p×××p interactions and C–H×××N hydrogen bonds.Cartesian coordinates of all DFT optimized structures",
publisher = "Elsevier",
journal = "Journal of Molecular Structure",
title = "Supplementary material for: "Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation"",
url = "https://hdl.handle.net/21.15107/rcub_cer_5112"
}

Darmanović, D., Radanović, D., Jevtović, M., Turel, I., Pevec, A., Milčić, M., Gruden, M., Zlatar, M., Đorđević, N. G., Anđelković, K.,& Čobeljić, B.. (2022). Supplementary material for: "Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation". in Journal of Molecular Structure
Elsevier..
https://hdl.handle.net/21.15107/rcub_cer_5112

Darmanović D, Radanović D, Jevtović M, Turel I, Pevec A, Milčić M, Gruden M, Zlatar M, Đorđević NG, Anđelković K, Čobeljić B. Supplementary material for: "Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation". in Journal of Molecular Structure. 2022;.
https://hdl.handle.net/21.15107/rcub_cer_5112 .

Darmanović, Darinka, Radanović, Dušanka, Jevtović, Mima, Turel, Iztok, Pevec, Andrej, Milčić, Miloš, Gruden, Maja, Zlatar, Matija, Đorđević, Nataša G., Anđelković, Katarina, Čobeljić, Božidar, "Supplementary material for: "Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation"" in Journal of Molecular Structure (2022),
https://hdl.handle.net/21.15107/rcub_cer_5112 .

TY  - JOUR
AU  - Darmanović, Darinka
AU  - Radanović, Dušanka
AU  - Jevtović, Mima
AU  - Turel, Iztok
AU  - Pevec, Andrej
AU  - Milčić, Miloš
AU  - Gruden, Maja
AU  - Zlatar, Matija
AU  - Đorđević, Nataša G.
AU  - Anđelković, Katarina
AU  - Čobeljić, Božidar
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5113
AB  - Two Co(III) complexes with condensation product of thiosemicarbazide and 2-acetylthiazole (HL1 ligand, (E)-2-(1-(thiazol-2-yl)ethylidene)hydrazine-1-carbothioamide) and the condensation product of 2-acetylpyridine and Girard's P reagent (HL2Cl ligand, (E)-1-(2-oxo-2-(2-(1-(pyridin-2-yl)ethylidene)hydrazinyl)ethyl)pyridin-1-ium chloride) have been synthesized and characterized based on the results of single-crystal X-ray diffraction, NMR and IR spectroscopy and elemental analysis. Cobalt(III) complex with HL1 ligand, [Co(L1)2]BF4⋅H2O (1), is bis octahedral complex in which two deprotonated ligand molecules coordinate in a mer arrangement through two NNS sets of donor atoms. In cobalt(III) complex with HL2Cl, [Co(L2)(N3)3] (2), the ligand is coordinated in deprotonated, formally neutral, form to Co(III) ion in tridentate fashion through NNO set of donor atoms, and the other three coordination sites of a monokis octahedron are occupied by meridionally coordinated azide anions. DFT calculations were performed to elucidate coordination preferences of these ligands toward Co(III) ion.
PB  - Elsevier
T2  - Journal of Molecular Structure
T1  - Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation
VL  - 1266
SP  - 133509
DO  - 10.1016/j.molstruc.2022.133509
ER  - 

@article{
author = "Darmanović, Darinka and Radanović, Dušanka and Jevtović, Mima and Turel, Iztok and Pevec, Andrej and Milčić, Miloš and Gruden, Maja and Zlatar, Matija and Đorđević, Nataša G. and Anđelković, Katarina and Čobeljić, Božidar",
year = "2022",
abstract = "Two Co(III) complexes with condensation product of thiosemicarbazide and 2-acetylthiazole (HL1 ligand, (E)-2-(1-(thiazol-2-yl)ethylidene)hydrazine-1-carbothioamide) and the condensation product of 2-acetylpyridine and Girard's P reagent (HL2Cl ligand, (E)-1-(2-oxo-2-(2-(1-(pyridin-2-yl)ethylidene)hydrazinyl)ethyl)pyridin-1-ium chloride) have been synthesized and characterized based on the results of single-crystal X-ray diffraction, NMR and IR spectroscopy and elemental analysis. Cobalt(III) complex with HL1 ligand, [Co(L1)2]BF4⋅H2O (1), is bis octahedral complex in which two deprotonated ligand molecules coordinate in a mer arrangement through two NNS sets of donor atoms. In cobalt(III) complex with HL2Cl, [Co(L2)(N3)3] (2), the ligand is coordinated in deprotonated, formally neutral, form to Co(III) ion in tridentate fashion through NNO set of donor atoms, and the other three coordination sites of a monokis octahedron are occupied by meridionally coordinated azide anions. DFT calculations were performed to elucidate coordination preferences of these ligands toward Co(III) ion.",
publisher = "Elsevier",
journal = "Journal of Molecular Structure",
title = "Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation",
volume = "1266",
pages = "133509",
doi = "10.1016/j.molstruc.2022.133509"
}

Darmanović, D., Radanović, D., Jevtović, M., Turel, I., Pevec, A., Milčić, M., Gruden, M., Zlatar, M., Đorđević, N. G., Anđelković, K.,& Čobeljić, B.. (2022). Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation. in Journal of Molecular Structure
Elsevier., 1266, 133509.
https://doi.org/10.1016/j.molstruc.2022.133509

Darmanović D, Radanović D, Jevtović M, Turel I, Pevec A, Milčić M, Gruden M, Zlatar M, Đorđević NG, Anđelković K, Čobeljić B. Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation. in Journal of Molecular Structure. 2022;1266:133509.
doi:10.1016/j.molstruc.2022.133509 .

Darmanović, Darinka, Radanović, Dušanka, Jevtović, Mima, Turel, Iztok, Pevec, Andrej, Milčić, Miloš, Gruden, Maja, Zlatar, Matija, Đorđević, Nataša G., Anđelković, Katarina, Čobeljić, Božidar, "Coordination preferences of NNO and NNS Schiff base ligands with Co(III) complexes: Synthesis, characterization and DFT calculation" in Journal of Molecular Structure, 1266 (2022):133509,
https://doi.org/10.1016/j.molstruc.2022.133509 . .

TY  - JOUR
AU  - Đorđević, Nataša G.
AU  - Mihajlović, Slavica
AU  - Vlahović, Milica
AU  - Lozanović Šajić, Jasmina
AU  - Martinović, Sanja
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5262
AB  - Sodium carbonate is a well-known material for being used as a good sorbent of carbon dioxide from the atmosphere, and as such has gained increasing importance in environmental protection. In order to enhance its sorption ability, mechanochemical activation of sodium carbonate was carried out in this study while the occurred changes after the activation and the relaxation time in a controlled environment were monitored. Activation was performed in a vibro-mill from 1 to 28 min. Based on the results of specific surface area, obtained by BET, the samples activated for 2 and 7 min were chosen and placed in a moist carbon dioxide atmosphere for 96 h, a period called the relaxation time. Differential thermal and thermogravimetric analyses were applied with the aim of determining the changes that occurred on the activated samples during the relaxation period. The decomposition temperature change of activated Na2CO3 samples, as well as mass loss and conversion level of Na2CO3 to NaHCO3 were monitored depending on activation and relaxation time periods. The conversion reactions of sodium carbonate to sodium bicarbonate under the specified environment of carbon dioxide and moisture were also studied, and the thermodynamic data such are changes in enthalpy, entropy, and Gibbs energy at the temperature range of 0–160 °C are given.
PB  - Elsevier
T2  - Thermocimica Acta
T1  - Thermal analysis and phase changes of mechanochemically activated sodium carbonate
VL  - 708
IS  - 179139
DO  - 10.1016/j.tca.2021.179139
ER  - 

@article{
author = "Đorđević, Nataša G. and Mihajlović, Slavica and Vlahović, Milica and Lozanović Šajić, Jasmina and Martinović, Sanja",
year = "2022",
abstract = "Sodium carbonate is a well-known material for being used as a good sorbent of carbon dioxide from the atmosphere, and as such has gained increasing importance in environmental protection. In order to enhance its sorption ability, mechanochemical activation of sodium carbonate was carried out in this study while the occurred changes after the activation and the relaxation time in a controlled environment were monitored. Activation was performed in a vibro-mill from 1 to 28 min. Based on the results of specific surface area, obtained by BET, the samples activated for 2 and 7 min were chosen and placed in a moist carbon dioxide atmosphere for 96 h, a period called the relaxation time. Differential thermal and thermogravimetric analyses were applied with the aim of determining the changes that occurred on the activated samples during the relaxation period. The decomposition temperature change of activated Na2CO3 samples, as well as mass loss and conversion level of Na2CO3 to NaHCO3 were monitored depending on activation and relaxation time periods. The conversion reactions of sodium carbonate to sodium bicarbonate under the specified environment of carbon dioxide and moisture were also studied, and the thermodynamic data such are changes in enthalpy, entropy, and Gibbs energy at the temperature range of 0–160 °C are given.",
publisher = "Elsevier",
journal = "Thermocimica Acta",
title = "Thermal analysis and phase changes of mechanochemically activated sodium carbonate",
volume = "708",
number = "179139",
doi = "10.1016/j.tca.2021.179139"
}

Đorđević, N. G., Mihajlović, S., Vlahović, M., Lozanović Šajić, J.,& Martinović, S.. (2022). Thermal analysis and phase changes of mechanochemically activated sodium carbonate. in Thermocimica Acta
Elsevier., 708(179139).
https://doi.org/10.1016/j.tca.2021.179139

Đorđević NG, Mihajlović S, Vlahović M, Lozanović Šajić J, Martinović S. Thermal analysis and phase changes of mechanochemically activated sodium carbonate. in Thermocimica Acta. 2022;708(179139).
doi:10.1016/j.tca.2021.179139 .

Đorđević, Nataša G., Mihajlović, Slavica, Vlahović, Milica, Lozanović Šajić, Jasmina, Martinović, Sanja, "Thermal analysis and phase changes of mechanochemically activated sodium carbonate" in Thermocimica Acta, 708, no. 179139 (2022),
https://doi.org/10.1016/j.tca.2021.179139 . .

TY  - JOUR
AU  - Đorđević, Nataša G.
AU  - Vlahović, Milica
AU  - Mihajlović, Slavica
AU  - Martinović, Sanja
AU  - Vušović, Nenad
AU  - Lozanović-Sajić, Jasmina
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5633
AB  - During mechanical activation, qualitative changes that can produce various phenomena occur in the material. In this study, anhydrous sodium carbonate was mechanically activated for 2, 7, 14, and 28 minutes in a vibro mill at a frequency of 3000 oscillations per minute. After activation, four series of activated samples were stored in the air at room conditions for 31 days (relaxation period). To monitor the kinetics of the transformation process of activated sodium carbonate samples, i.e. the mechanism of sodium bicarbonate formation during relaxation, Fourier-transform infrared (FTIR) spectroscopy analysis was used. FTIR testing was performed as a function of relaxation time for all four series of samples, with characteristic groups observed: CO32-, HCO3- and OH-. The obtained results provided kinetics parameters for the transformation of sodium carbonate into sodium bicarbonate due to the chemisorption of moisture and carbon dioxide from the atmosphere.
AB  - Током механичке активације у материјалу се јављају квалитативне  промене које могу произвести различите појаве. У овој студији, анхидровани натријум  карбонат је механички активиран током 2, 7, 14 и 28 минута у вибро млину при  фреквенцији од 3000 осцилација у минути. Након активације, четири серије  активираних узорака су чуване на ваздуху у собним условима 31 дан (период  релаксације). За праћење кинетике процеса трансформације узорака активираног  натријум карбоната, односно механизма формирања натријум бикарбоната током  релаксације, коришћена је FTIR спектроскопска анализа. Испитивање је извршено у  функцији времена релаксације за све четири серије узорака, посматрањем  карактеристичних група: CO3 2- , HCO3- и OH- . На основу резултата, добијени су  кинетички параметри трансформације натријум карбоната у натријум бикарбонат  услед хемисорпције влаге и угљен-диоксида из атмосфере.
PB  - ETRAN Society
T2  - Science of Sintering
T1  - Fourier-transform infrared spectroscopy analysis of mechanochemical transformation kinetics of sodium carbonate to bicarbonate
VL  - 54
IS  - 4
SP  - 481
EP  - 494
DO  - 10.2298/SOS2204481D
ER  - 

@article{
author = "Đorđević, Nataša G. and Vlahović, Milica and Mihajlović, Slavica and Martinović, Sanja and Vušović, Nenad and Lozanović-Sajić, Jasmina",
year = "2022",
abstract = "During mechanical activation, qualitative changes that can produce various phenomena occur in the material. In this study, anhydrous sodium carbonate was mechanically activated for 2, 7, 14, and 28 minutes in a vibro mill at a frequency of 3000 oscillations per minute. After activation, four series of activated samples were stored in the air at room conditions for 31 days (relaxation period). To monitor the kinetics of the transformation process of activated sodium carbonate samples, i.e. the mechanism of sodium bicarbonate formation during relaxation, Fourier-transform infrared (FTIR) spectroscopy analysis was used. FTIR testing was performed as a function of relaxation time for all four series of samples, with characteristic groups observed: CO32-, HCO3- and OH-. The obtained results provided kinetics parameters for the transformation of sodium carbonate into sodium bicarbonate due to the chemisorption of moisture and carbon dioxide from the atmosphere., Током механичке активације у материјалу се јављају квалитативне  промене које могу произвести различите појаве. У овој студији, анхидровани натријум  карбонат је механички активиран током 2, 7, 14 и 28 минута у вибро млину при  фреквенцији од 3000 осцилација у минути. Након активације, четири серије  активираних узорака су чуване на ваздуху у собним условима 31 дан (период  релаксације). За праћење кинетике процеса трансформације узорака активираног  натријум карбоната, односно механизма формирања натријум бикарбоната током  релаксације, коришћена је FTIR спектроскопска анализа. Испитивање је извршено у  функцији времена релаксације за све четири серије узорака, посматрањем  карактеристичних група: CO3 2- , HCO3- и OH- . На основу резултата, добијени су  кинетички параметри трансформације натријум карбоната у натријум бикарбонат  услед хемисорпције влаге и угљен-диоксида из атмосфере.",
publisher = "ETRAN Society",
journal = "Science of Sintering",
title = "Fourier-transform infrared spectroscopy analysis of mechanochemical transformation kinetics of sodium carbonate to bicarbonate",
volume = "54",
number = "4",
pages = "481-494",
doi = "10.2298/SOS2204481D"
}

Đorđević, N. G., Vlahović, M., Mihajlović, S., Martinović, S., Vušović, N.,& Lozanović-Sajić, J.. (2022). Fourier-transform infrared spectroscopy analysis of mechanochemical transformation kinetics of sodium carbonate to bicarbonate. in Science of Sintering
ETRAN Society., 54(4), 481-494.
https://doi.org/10.2298/SOS2204481D

Đorđević NG, Vlahović M, Mihajlović S, Martinović S, Vušović N, Lozanović-Sajić J. Fourier-transform infrared spectroscopy analysis of mechanochemical transformation kinetics of sodium carbonate to bicarbonate. in Science of Sintering. 2022;54(4):481-494.
doi:10.2298/SOS2204481D .

Đorđević, Nataša G., Vlahović, Milica, Mihajlović, Slavica, Martinović, Sanja, Vušović, Nenad, Lozanović-Sajić, Jasmina, "Fourier-transform infrared spectroscopy analysis of mechanochemical transformation kinetics of sodium carbonate to bicarbonate" in Science of Sintering, 54, no. 4 (2022):481-494,
https://doi.org/10.2298/SOS2204481D . .

TY  - JOUR
AU  - Đorđević, Nataša G.
AU  - Vlahović, Milica
AU  - Martinović, Sanja
AU  - Mihajlović, Slavica
AU  - Vušović, Nenad M.
AU  - Sokić, Miroslav D.
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4764
AB  - In this study, a mixture of magnesium oxide and titanium dioxide was mechanically activated in order to investigate the possibility of mechanochemical synthesis of magnesium titanate. Mechanical activation was performed for 1000 min in a high-energy vibro mill (type MH954/3, KHD Humboldt Wedag AG, Germany). The mill is equipped with housing having a horizontally placed shutter. The cylindrical stainless steel working vessel, with inner dimensions of 40 mm in height and 170 mm in diameter, has working elements consisting of two free concentric stainless steel rings with a total weight of 3 kg. The engine power is 0.8 kW. Respecting the optimal amount of powder to be activated of 50-150 g and the stoichiometric ratio of the reactants in the equation presenting the chemical reaction of magnesium titanate synthesis, the starting amounts were 20.2 g (0.5 mol) of MgO and 39.9 g (0.5 mol) TiO2. During the experiments, X-ray diffraction analysis of the samples taken from the reaction system after 60, 180, 330, and 1000 min of mechanical activation was performed. Atomic absorption spectrophotometry was used for chemical composition analysis of samples taken at different activation times. Based on the X-ray diffraction analysis results, it can be concluded that the greatest changes in the system took place at the very beginning of the mechanical activation due to the disturbance of the crystal structure of the initial components. X-ray diffraction analysis of the sample after 1000 min of activation showed complete amorphization of the mixture, but diffraction maxima characteristic for magnesium titanate were not identified. Therefore, the mechanical activation experiments were stopped. Evidently, the energy input was not sufficient to overcome the energy barrier to form a new chemical compound-magnesium titanate. The failure to synthesize magnesium titanate is explained by the low negative Gibbs energy value of-25.8 kJ/mol (despite the theoretical possibility that the reaction will happen), as well as by the amount of mechanical energy entered into the system during activation which was insufficient to obtain the reaction product. Although the synthesis of MgTiO3 was not achieved, significant results were obtained which identify models for further investigations of the possibility of mechanochemical reactions of alkaline earth metals and titanium dioxide.
AB  - U ovom radu izvršen je pokušaj mehanohemijske sinteze magnezijum titanata u visokoenergetskom mlinu sa torzionim oprugama i prstenastim radnim elementima. Teorijski, hemijska reakcija je moguća samo ako je Gibsova slobodna energija te reakcije negativna, odnosno ako je energetski sadržaj produkata reakcije na nižem nivou od energetskog sadržaja reaktanata. Na osnovu rezultata dobijenih u ovom istraživanju može se zaključiti da i pored dovedene mehaničke energije u sistem, prisutna slobodna energija nije bila dovoljna da se odigra reakcija između MgO i TiO2 i dobije magnezijum titanat kao produkt. Mehanička energija koja je predata reakcionom sistemu u mehano-hemijskom aktivatoru dovela je do rušenja kristalne strukture i amorfizacije reaktanata, što se vidi na prikazanim diftaktogramima, ali nije bila dovoljna za sintezu magnezijum titanata prema jednačini (1), pa bi u tom cilju bilo neophodno koristiti energetski jači uređaj koji bi polaznim komponentama predao veći sadržaj energije, čime bi se preskočila energetska barijera i omogućilo polaznim oksidima da uđu u hemijsku reakciju tokom mehaničke aktivacije.
PB  - Belgrade : Association of the Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Investigation of the impact of mechanical activation on synthesis of the MgO-TiO2 system
T1  - Ispitivanje uticaja mehaničke aktivacije smeše MgO-TiO2 na sintezu magnezijum-titanata
VL  - 75
IS  - 4
SP  - 213
EP  - 225
DO  - 10.2298/HEMIND210402022D
ER  - 

@article{
author = "Đorđević, Nataša G. and Vlahović, Milica and Martinović, Sanja and Mihajlović, Slavica and Vušović, Nenad M. and Sokić, Miroslav D.",
year = "2021",
abstract = "In this study, a mixture of magnesium oxide and titanium dioxide was mechanically activated in order to investigate the possibility of mechanochemical synthesis of magnesium titanate. Mechanical activation was performed for 1000 min in a high-energy vibro mill (type MH954/3, KHD Humboldt Wedag AG, Germany). The mill is equipped with housing having a horizontally placed shutter. The cylindrical stainless steel working vessel, with inner dimensions of 40 mm in height and 170 mm in diameter, has working elements consisting of two free concentric stainless steel rings with a total weight of 3 kg. The engine power is 0.8 kW. Respecting the optimal amount of powder to be activated of 50-150 g and the stoichiometric ratio of the reactants in the equation presenting the chemical reaction of magnesium titanate synthesis, the starting amounts were 20.2 g (0.5 mol) of MgO and 39.9 g (0.5 mol) TiO2. During the experiments, X-ray diffraction analysis of the samples taken from the reaction system after 60, 180, 330, and 1000 min of mechanical activation was performed. Atomic absorption spectrophotometry was used for chemical composition analysis of samples taken at different activation times. Based on the X-ray diffraction analysis results, it can be concluded that the greatest changes in the system took place at the very beginning of the mechanical activation due to the disturbance of the crystal structure of the initial components. X-ray diffraction analysis of the sample after 1000 min of activation showed complete amorphization of the mixture, but diffraction maxima characteristic for magnesium titanate were not identified. Therefore, the mechanical activation experiments were stopped. Evidently, the energy input was not sufficient to overcome the energy barrier to form a new chemical compound-magnesium titanate. The failure to synthesize magnesium titanate is explained by the low negative Gibbs energy value of-25.8 kJ/mol (despite the theoretical possibility that the reaction will happen), as well as by the amount of mechanical energy entered into the system during activation which was insufficient to obtain the reaction product. Although the synthesis of MgTiO3 was not achieved, significant results were obtained which identify models for further investigations of the possibility of mechanochemical reactions of alkaline earth metals and titanium dioxide., U ovom radu izvršen je pokušaj mehanohemijske sinteze magnezijum titanata u visokoenergetskom mlinu sa torzionim oprugama i prstenastim radnim elementima. Teorijski, hemijska reakcija je moguća samo ako je Gibsova slobodna energija te reakcije negativna, odnosno ako je energetski sadržaj produkata reakcije na nižem nivou od energetskog sadržaja reaktanata. Na osnovu rezultata dobijenih u ovom istraživanju može se zaključiti da i pored dovedene mehaničke energije u sistem, prisutna slobodna energija nije bila dovoljna da se odigra reakcija između MgO i TiO2 i dobije magnezijum titanat kao produkt. Mehanička energija koja je predata reakcionom sistemu u mehano-hemijskom aktivatoru dovela je do rušenja kristalne strukture i amorfizacije reaktanata, što se vidi na prikazanim diftaktogramima, ali nije bila dovoljna za sintezu magnezijum titanata prema jednačini (1), pa bi u tom cilju bilo neophodno koristiti energetski jači uređaj koji bi polaznim komponentama predao veći sadržaj energije, čime bi se preskočila energetska barijera i omogućilo polaznim oksidima da uđu u hemijsku reakciju tokom mehaničke aktivacije.",
publisher = "Belgrade : Association of the Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Investigation of the impact of mechanical activation on synthesis of the MgO-TiO2 system, Ispitivanje uticaja mehaničke aktivacije smeše MgO-TiO2 na sintezu magnezijum-titanata",
volume = "75",
number = "4",
pages = "213-225",
doi = "10.2298/HEMIND210402022D"
}

Đorđević, N. G., Vlahović, M., Martinović, S., Mihajlović, S., Vušović, N. M.,& Sokić, M. D.. (2021). Investigation of the impact of mechanical activation on synthesis of the MgO-TiO2 system. in Hemijska industrija
Belgrade : Association of the Chemical Engineers of Serbia., 75(4), 213-225.
https://doi.org/10.2298/HEMIND210402022D

Đorđević NG, Vlahović M, Martinović S, Mihajlović S, Vušović NM, Sokić MD. Investigation of the impact of mechanical activation on synthesis of the MgO-TiO2 system. in Hemijska industrija. 2021;75(4):213-225.
doi:10.2298/HEMIND210402022D .

Đorđević, Nataša G., Vlahović, Milica, Martinović, Sanja, Mihajlović, Slavica, Vušović, Nenad M., Sokić, Miroslav D., "Investigation of the impact of mechanical activation on synthesis of the MgO-TiO2 system" in Hemijska industrija, 75, no. 4 (2021):213-225,
https://doi.org/10.2298/HEMIND210402022D . .

TY  - JOUR
AU  - Mihajlović, Slavica
AU  - Vlahović, Milica
AU  - Vušović, Nenad
AU  - Đorđević, Nataša G.
AU  - Jovanović, Marina N.
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4754
AB  - To provide the quality required for its use, raw kaolin must be subjected to certain processing procedures like delamination which is applied to the layered structure materials. The aim of this research is to determine the possibility of performing delamination in the extruder and to estimate the effects of this process on the physico-chemical properties of kaolin. The results showed that delamination can be efficiently realized in the extruder by shearing densely packed layers under the influence of friction force and added Na2 CO3 electrolyte. The crystal structure of the system was thus disrupted. This was confirmed by the Hinckley index (HI) decrease and by the dilatometric characteristics changes during heating. The particle size was reduced and, furthermore, new adsorption centers were formed, which led to an increase in the total cation exchange capacity (CEC). The plasticity of kaolin decreased with the increasing delamination degree, as well as the amount of water required for plastic processing, which is favorable in drying ceramic products.
PB  - International Institute for the Science of Sintering (IISS)
T2  - Science of Sintering
T1  - Effect оf delamination оn physico-chemical properties оf kaolin
VL  - 53
IS  - 2
SP  - 253
SP  - 266
DO  - 10.2298/SOS2102253M
ER  - 

@article{
author = "Mihajlović, Slavica and Vlahović, Milica and Vušović, Nenad and Đorđević, Nataša G. and Jovanović, Marina N.",
year = "2021",
abstract = "To provide the quality required for its use, raw kaolin must be subjected to certain processing procedures like delamination which is applied to the layered structure materials. The aim of this research is to determine the possibility of performing delamination in the extruder and to estimate the effects of this process on the physico-chemical properties of kaolin. The results showed that delamination can be efficiently realized in the extruder by shearing densely packed layers under the influence of friction force and added Na2 CO3 electrolyte. The crystal structure of the system was thus disrupted. This was confirmed by the Hinckley index (HI) decrease and by the dilatometric characteristics changes during heating. The particle size was reduced and, furthermore, new adsorption centers were formed, which led to an increase in the total cation exchange capacity (CEC). The plasticity of kaolin decreased with the increasing delamination degree, as well as the amount of water required for plastic processing, which is favorable in drying ceramic products.",
publisher = "International Institute for the Science of Sintering (IISS)",
journal = "Science of Sintering",
title = "Effect оf delamination оn physico-chemical properties оf kaolin",
volume = "53",
number = "2",
pages = "253-266",
doi = "10.2298/SOS2102253M"
}

Mihajlović, S., Vlahović, M., Vušović, N., Đorđević, N. G.,& Jovanović, M. N.. (2021). Effect оf delamination оn physico-chemical properties оf kaolin. in Science of Sintering
International Institute for the Science of Sintering (IISS)., 53(2), 253.
https://doi.org/10.2298/SOS2102253M

Mihajlović S, Vlahović M, Vušović N, Đorđević NG, Jovanović MN. Effect оf delamination оn physico-chemical properties оf kaolin. in Science of Sintering. 2021;53(2):253.
doi:10.2298/SOS2102253M .

Mihajlović, Slavica, Vlahović, Milica, Vušović, Nenad, Đorđević, Nataša G., Jovanović, Marina N., "Effect оf delamination оn physico-chemical properties оf kaolin" in Science of Sintering, 53, no. 2 (2021):253,
https://doi.org/10.2298/SOS2102253M . .

TY  - JOUR
AU  - Mihajlović, Slavica
AU  - Đorđević, Nataša G.
AU  - Jovanović, Marina N.
AU  - Vlahović, Milica
AU  - Savić, Ljubinko D.
AU  - Patarić, Aleksandra S.
AU  - Blagojev, Marina S.
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4676
AB  - This work presents a grinding process of monoammonium phosphate (MAP) as an active component in a powder fire extinguisher (PFE). The aim was to determine the grinding time for reaching the optimal particle size of MAP necessary for permanent fire extinguishing. MAP grinding was performed by using a laboratory ceramic ball mill and a vibrating cup mill. The grinding process was controlled by sieving using a 100 µm sieve at precisely defined time intervals. The efficiency of a PFE depends on the share of the -100 µm fraction of the active component, which has to exceed 60 %. The optimal grain size with 64 % of fraction of particle size -100 µm was obtained after 33 min of grinding of ≈3000 µm mm grain size MAP by using a ball mill (single-stage grinding). In two-stage process, by grinding the same initial MAP sample (≈3000 µm) in the vibro mill for 10 min, powder with the upper limit grain size of 300 µm and the mean grain diameter of 120 µm was obtained. This sample with a reduced size was further ground in the ceramic ball mill yielding 67.5 % of the fraction of particle size -100 µm after 19 min. The total time of the two-stage grinding process was 29 min. By analyzing the grinding time of MAP required to get the lowest required share of the fraction of particle size -100 µm that provides the effectiveness of formed PFE it can be concluded that 64 % of this fraction was obtained after 33 min of single-stage grinding, while only after 26 min in the two-stage process. Thus, the grinding time was reduced by 7 min indicating certain energy savings. Stability and hydrophobicity of the obtained PFE were achieved by coating with magnesium stearate (MgSt) at the content of 2 % in a ball mill for 15 min. The coating was confirmed by the standardized procedure for verification of PFE hydrophobic properties in contact with water drops. To obtained PFE had component mass ratios of MAP:AS:CC:QS:MgSt=55:20:18:5:2 (AS-ammonium sulfate; CC-calcium carbonate, QS-quartz sand) and was further characterized by chemical and granulometric analyses. The fire extinguishing efficiency of the PFE was tested in controlled conditions, whereby fires were initiated by burning solid materials and flammable liquids. In both cases, immediate elimination of flames was achieved, thus proving the efficiency of the PFE obtained in this work for practical applications.
AB  - U radu je prikazan postupak mlevenja monoamonijum fosfata (MAP) kao aktivne komponente u praškastom sredstvu za gašenje požara (SGP). Cilj je bio da se utvrdi vreme mlevenja MAP koje je potrebno za dobijanje optimalne granulacije za potpuno gašenje požara i eliminisanje plamena. MAP je mleven u laboratorijskom keramičkom mlinu sa kuglama i vibro mlinu sa prstenastim radnim elementima. Proces je kontrolisan prosejavanjem na situ 100 μm. Utvrđeno je da se mlevenjem granula MAP veličine ≈3000 μm u laboratorijskom mlinu sa kuglama optimalna krupnoća od 64 % frakcije čestica veličine -100 μm dobija nakon 33 min mlevenja. Za postizanje iste finoće proizvoda u dvostepenom mlevenju vreme je skraćeno na 26 min (10 min u vibro mlinu i 16 min u mlinu sa kuglama). Stabilnost i hidrofobnost SGP je postignuta oblaganjem magnezijum stearatom (MgSt) pri udelu od 2 % u mlinu sa kuglama u trajanju od 15 min. Efikasnost gašenja je testirana na poligonu u realnim uslovima. Na tačno određenom mestu za testiranje, u kontro-lisanim uslovima, izazvan je požar paljenjem čvrstih materijala i zapaljivih tečnosti. U oba slučaja je došlo do trenutne eliminacije plamena. Na taj način je potvrđena efikasnost formiranog SGP i mogućnost njegove upotrebe u praksi.
PB  - Beograd : Savez hemijskih inženjera
T2  - Hemijska industrija
T1  - Optimization of the active component grinding process and hydrophobization of the obtained powder fire extinguisher
T1  - Optimizacija mlevenja aktivne komponente i hidrofobizacija dobijenog sredstva za gašenje požara]
VL  - 75
IS  - 2
SP  - 65
EP  - 75
DO  - 10.2298/HEMIND210114012M
ER  - 

@article{
author = "Mihajlović, Slavica and Đorđević, Nataša G. and Jovanović, Marina N. and Vlahović, Milica and Savić, Ljubinko D. and Patarić, Aleksandra S. and Blagojev, Marina S.",
year = "2021",
abstract = "This work presents a grinding process of monoammonium phosphate (MAP) as an active component in a powder fire extinguisher (PFE). The aim was to determine the grinding time for reaching the optimal particle size of MAP necessary for permanent fire extinguishing. MAP grinding was performed by using a laboratory ceramic ball mill and a vibrating cup mill. The grinding process was controlled by sieving using a 100 µm sieve at precisely defined time intervals. The efficiency of a PFE depends on the share of the -100 µm fraction of the active component, which has to exceed 60 %. The optimal grain size with 64 % of fraction of particle size -100 µm was obtained after 33 min of grinding of ≈3000 µm mm grain size MAP by using a ball mill (single-stage grinding). In two-stage process, by grinding the same initial MAP sample (≈3000 µm) in the vibro mill for 10 min, powder with the upper limit grain size of 300 µm and the mean grain diameter of 120 µm was obtained. This sample with a reduced size was further ground in the ceramic ball mill yielding 67.5 % of the fraction of particle size -100 µm after 19 min. The total time of the two-stage grinding process was 29 min. By analyzing the grinding time of MAP required to get the lowest required share of the fraction of particle size -100 µm that provides the effectiveness of formed PFE it can be concluded that 64 % of this fraction was obtained after 33 min of single-stage grinding, while only after 26 min in the two-stage process. Thus, the grinding time was reduced by 7 min indicating certain energy savings. Stability and hydrophobicity of the obtained PFE were achieved by coating with magnesium stearate (MgSt) at the content of 2 % in a ball mill for 15 min. The coating was confirmed by the standardized procedure for verification of PFE hydrophobic properties in contact with water drops. To obtained PFE had component mass ratios of MAP:AS:CC:QS:MgSt=55:20:18:5:2 (AS-ammonium sulfate; CC-calcium carbonate, QS-quartz sand) and was further characterized by chemical and granulometric analyses. The fire extinguishing efficiency of the PFE was tested in controlled conditions, whereby fires were initiated by burning solid materials and flammable liquids. In both cases, immediate elimination of flames was achieved, thus proving the efficiency of the PFE obtained in this work for practical applications., U radu je prikazan postupak mlevenja monoamonijum fosfata (MAP) kao aktivne komponente u praškastom sredstvu za gašenje požara (SGP). Cilj je bio da se utvrdi vreme mlevenja MAP koje je potrebno za dobijanje optimalne granulacije za potpuno gašenje požara i eliminisanje plamena. MAP je mleven u laboratorijskom keramičkom mlinu sa kuglama i vibro mlinu sa prstenastim radnim elementima. Proces je kontrolisan prosejavanjem na situ 100 μm. Utvrđeno je da se mlevenjem granula MAP veličine ≈3000 μm u laboratorijskom mlinu sa kuglama optimalna krupnoća od 64 % frakcije čestica veličine -100 μm dobija nakon 33 min mlevenja. Za postizanje iste finoće proizvoda u dvostepenom mlevenju vreme je skraćeno na 26 min (10 min u vibro mlinu i 16 min u mlinu sa kuglama). Stabilnost i hidrofobnost SGP je postignuta oblaganjem magnezijum stearatom (MgSt) pri udelu od 2 % u mlinu sa kuglama u trajanju od 15 min. Efikasnost gašenja je testirana na poligonu u realnim uslovima. Na tačno određenom mestu za testiranje, u kontro-lisanim uslovima, izazvan je požar paljenjem čvrstih materijala i zapaljivih tečnosti. U oba slučaja je došlo do trenutne eliminacije plamena. Na taj način je potvrđena efikasnost formiranog SGP i mogućnost njegove upotrebe u praksi.",
publisher = "Beograd : Savez hemijskih inženjera",
journal = "Hemijska industrija",
title = "Optimization of the active component grinding process and hydrophobization of the obtained powder fire extinguisher, Optimizacija mlevenja aktivne komponente i hidrofobizacija dobijenog sredstva za gašenje požara]",
volume = "75",
number = "2",
pages = "65-75",
doi = "10.2298/HEMIND210114012M"
}

Mihajlović, S., Đorđević, N. G., Jovanović, M. N., Vlahović, M., Savić, L. D., Patarić, A. S.,& Blagojev, M. S.. (2021). Optimization of the active component grinding process and hydrophobization of the obtained powder fire extinguisher. in Hemijska industrija
Beograd : Savez hemijskih inženjera., 75(2), 65-75.
https://doi.org/10.2298/HEMIND210114012M

Mihajlović S, Đorđević NG, Jovanović MN, Vlahović M, Savić LD, Patarić AS, Blagojev MS. Optimization of the active component grinding process and hydrophobization of the obtained powder fire extinguisher. in Hemijska industrija. 2021;75(2):65-75.
doi:10.2298/HEMIND210114012M .

Mihajlović, Slavica, Đorđević, Nataša G., Jovanović, Marina N., Vlahović, Milica, Savić, Ljubinko D., Patarić, Aleksandra S., Blagojev, Marina S., "Optimization of the active component grinding process and hydrophobization of the obtained powder fire extinguisher" in Hemijska industrija, 75, no. 2 (2021):65-75,
https://doi.org/10.2298/HEMIND210114012M . .

TY  - PAT
AU  - Martinović, Sanja
AU  - Vlahović, Milica
AU  - Volkov Husović, Tatjana
AU  - Savić, Aleksandar R.
AU  - Milićević, Sonja
AU  - Jovanović, Vladimir
AU  - Đorđević, Nataša
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7090
AB  - Stabilizacija teških metala, posebno bakra, iz kiselih otpadnih rudničkih voda izvodi se njihovom solidifikacijom u sumpor polimerni beton kao ekološki prihvatljiv građevinski materijal. Postupak se izvodi tako što se u reakcionom sudu agregat u količini od 56 masena % zagreva na temperature od 160 °C. Zatim se dodaje 5 masena % letećeg pepela iz termoelektrane kao filera  i 6 masenih % peleta letećeg pepela sa absorbovanim teškim metalima iz rudničkih voda. Homogenizovanoj čvrstoj mešavini dodaje se 33 masena % rastopa elementarnog i modifikovanog sumpora (u masenom odnosu 98,2 % elementarnog sumpora i 1,8 % modifkovanog sumpora), tzv. sumpor modifikovanog veziva. Modifikovani sumpor dobijen je mešanjem elementarnog sumpora kao nus-proizvoda iz rafinacije nafte sa diciklopentadienom na temperaturi od 132°-141 ºC. Nakon homogenizacije u trajanju od 2 do 5 minuta, dobijena mešavina izliva se u kalupe prethodno zagrejane na 120 ºC i vibrira 10 sekundi. Površina ovako dobijene sumpor-polimerne betonske mešavine se izravna i ostavi da očvrsne u kalupu na sobnoj temperaturи. Nakon 3 časa očvršćavanja uzorci se vade iz kalupa i neguju na sobnoj temperaturi tokom 24 časa. Dobijeni materijal je nakon ispitivanja pokazao zadovoljavajuće karakteristike potrebne za sve oblasti primene konvencionalnih betona. Ovim postupkom eliminisani su teški metali  iz otpadnih rudničkih voda, korišćeni su industrijski nus-proizvodi (leteći pepeo i sumpor), pri čemu su smanjene njihove deponije, dok dobijeni materijal ne dovodi do sekundarnog zagađenja životne sredine i stoga se smatra ekološki prihvatljivim.
PB  - Zavod za intelektualnu svojinu Republike Srbije
T2  - Zavod za intelektualnu svojinu Republike Srbije
T1  - Postupak solidifikacije i stabilizacije teških metala iz otpadnih rudničkih voda adsorbovanih na paletama letećeg pepela u ekološki prihvatljiv građevinski materijal
T1  - Procedure of solidification and stabilization of heavy metals from mine waste waters adsorbed on fly ash pellets into enviromentally acceptable building material
VL  - 5
SP  - 61721
UR  - https://hdl.handle.net/21.15107/rcub_cer_7090
ER  - 

@misc{
author = "Martinović, Sanja and Vlahović, Milica and Volkov Husović, Tatjana and Savić, Aleksandar R. and Milićević, Sonja and Jovanović, Vladimir and Đorđević, Nataša",
year = "2021",
abstract = "Stabilizacija teških metala, posebno bakra, iz kiselih otpadnih rudničkih voda izvodi se njihovom solidifikacijom u sumpor polimerni beton kao ekološki prihvatljiv građevinski materijal. Postupak se izvodi tako što se u reakcionom sudu agregat u količini od 56 masena % zagreva na temperature od 160 °C. Zatim se dodaje 5 masena % letećeg pepela iz termoelektrane kao filera  i 6 masenih % peleta letećeg pepela sa absorbovanim teškim metalima iz rudničkih voda. Homogenizovanoj čvrstoj mešavini dodaje se 33 masena % rastopa elementarnog i modifikovanog sumpora (u masenom odnosu 98,2 % elementarnog sumpora i 1,8 % modifkovanog sumpora), tzv. sumpor modifikovanog veziva. Modifikovani sumpor dobijen je mešanjem elementarnog sumpora kao nus-proizvoda iz rafinacije nafte sa diciklopentadienom na temperaturi od 132°-141 ºC. Nakon homogenizacije u trajanju od 2 do 5 minuta, dobijena mešavina izliva se u kalupe prethodno zagrejane na 120 ºC i vibrira 10 sekundi. Površina ovako dobijene sumpor-polimerne betonske mešavine se izravna i ostavi da očvrsne u kalupu na sobnoj temperaturи. Nakon 3 časa očvršćavanja uzorci se vade iz kalupa i neguju na sobnoj temperaturi tokom 24 časa. Dobijeni materijal je nakon ispitivanja pokazao zadovoljavajuće karakteristike potrebne za sve oblasti primene konvencionalnih betona. Ovim postupkom eliminisani su teški metali  iz otpadnih rudničkih voda, korišćeni su industrijski nus-proizvodi (leteći pepeo i sumpor), pri čemu su smanjene njihove deponije, dok dobijeni materijal ne dovodi do sekundarnog zagađenja životne sredine i stoga se smatra ekološki prihvatljivim.",
publisher = "Zavod za intelektualnu svojinu Republike Srbije",
journal = "Zavod za intelektualnu svojinu Republike Srbije",
title = "Postupak solidifikacije i stabilizacije teških metala iz otpadnih rudničkih voda adsorbovanih na paletama letećeg pepela u ekološki prihvatljiv građevinski materijal, Procedure of solidification and stabilization of heavy metals from mine waste waters adsorbed on fly ash pellets into enviromentally acceptable building material",
volume = "5",
pages = "61721",
url = "https://hdl.handle.net/21.15107/rcub_cer_7090"
}

Martinović, S., Vlahović, M., Volkov Husović, T., Savić, A. R., Milićević, S., Jovanović, V.,& Đorđević, N.. (2021). Postupak solidifikacije i stabilizacije teških metala iz otpadnih rudničkih voda adsorbovanih na paletama letećeg pepela u ekološki prihvatljiv građevinski materijal. in Zavod za intelektualnu svojinu Republike Srbije
Zavod za intelektualnu svojinu Republike Srbije., 5, 61721.
https://hdl.handle.net/21.15107/rcub_cer_7090

Martinović S, Vlahović M, Volkov Husović T, Savić AR, Milićević S, Jovanović V, Đorđević N. Postupak solidifikacije i stabilizacije teških metala iz otpadnih rudničkih voda adsorbovanih na paletama letećeg pepela u ekološki prihvatljiv građevinski materijal. in Zavod za intelektualnu svojinu Republike Srbije. 2021;5:61721.
https://hdl.handle.net/21.15107/rcub_cer_7090 .

Martinović, Sanja, Vlahović, Milica, Volkov Husović, Tatjana, Savić, Aleksandar R., Milićević, Sonja, Jovanović, Vladimir, Đorđević, Nataša, "Postupak solidifikacije i stabilizacije teških metala iz otpadnih rudničkih voda adsorbovanih na paletama letećeg pepela u ekološki prihvatljiv građevinski materijal" in Zavod za intelektualnu svojinu Republike Srbije, 5 (2021):61721,
https://hdl.handle.net/21.15107/rcub_cer_7090 .

TY  - JOUR
AU  - Đorđević, Nataša G.
AU  - Vlahović, Milica
AU  - Martinović, Sanja
AU  - Bugarčić, Mladen
AU  - Mihajlović, Slavica
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5990
AB  - Secondary sulfur obtained as a by-product in the oil refining process is a major problem as an environmental pollutant. One of the possibilities for environmental protection is the use of sulfur obtained in this way as a component of sulfur concrete. Mixing of sulfur with suitable additives can provide longer working lifetime of sulfur concrete, as well as maintenance of the former physical, chemical, and mechanical properties of concrete. Such mixtures are usually called modified sulfur or sulfur cement. Secondary sulfur produced in the oil refining process by the Klaus process (approval of crude oil) cannot be used in this form. In order to be ready for the use of sulfur concrete and asphalt, it is necessary to modify elemental sulfur from cyclic to chain form, obtaining of modified sulfur whose application is as a binding agent in a concrete instead of portland cement is described in this paper. Influence of dicyclopentadien, an organic additive, on sulfur modification has been studied in this research. Microstructure and mineral analysis of modified and unmodified sulfur cement binding are performed using polarized and scanning electron microscopes and X-ray diffraction spectrometer.
PB  - University of Belgrade - Faculty of Mining and Geology
T2  - Podzemni radovi / Underground mining engineering
T1  - X-rаy diffraction and SEM analysis of waste sulfur modification for use in concretes
VL  - 38
SP  - 57
EP  - 65
DO  - 10.5937/podrad2138057Q
ER  - 

@article{
author = "Đorđević, Nataša G. and Vlahović, Milica and Martinović, Sanja and Bugarčić, Mladen and Mihajlović, Slavica",
year = "2021",
abstract = "Secondary sulfur obtained as a by-product in the oil refining process is a major problem as an environmental pollutant. One of the possibilities for environmental protection is the use of sulfur obtained in this way as a component of sulfur concrete. Mixing of sulfur with suitable additives can provide longer working lifetime of sulfur concrete, as well as maintenance of the former physical, chemical, and mechanical properties of concrete. Such mixtures are usually called modified sulfur or sulfur cement. Secondary sulfur produced in the oil refining process by the Klaus process (approval of crude oil) cannot be used in this form. In order to be ready for the use of sulfur concrete and asphalt, it is necessary to modify elemental sulfur from cyclic to chain form, obtaining of modified sulfur whose application is as a binding agent in a concrete instead of portland cement is described in this paper. Influence of dicyclopentadien, an organic additive, on sulfur modification has been studied in this research. Microstructure and mineral analysis of modified and unmodified sulfur cement binding are performed using polarized and scanning electron microscopes and X-ray diffraction spectrometer.",
publisher = "University of Belgrade - Faculty of Mining and Geology",
journal = "Podzemni radovi / Underground mining engineering",
title = "X-rаy diffraction and SEM analysis of waste sulfur modification for use in concretes",
volume = "38",
pages = "57-65",
doi = "10.5937/podrad2138057Q"
}

Đorđević, N. G., Vlahović, M., Martinović, S., Bugarčić, M.,& Mihajlović, S.. (2021). X-rаy diffraction and SEM analysis of waste sulfur modification for use in concretes. in Podzemni radovi / Underground mining engineering
University of Belgrade - Faculty of Mining and Geology., 38, 57-65.
https://doi.org/10.5937/podrad2138057Q

Đorđević NG, Vlahović M, Martinović S, Bugarčić M, Mihajlović S. X-rаy diffraction and SEM analysis of waste sulfur modification for use in concretes. in Podzemni radovi / Underground mining engineering. 2021;38:57-65.
doi:10.5937/podrad2138057Q .

Đorđević, Nataša G., Vlahović, Milica, Martinović, Sanja, Bugarčić, Mladen, Mihajlović, Slavica, "X-rаy diffraction and SEM analysis of waste sulfur modification for use in concretes" in Podzemni radovi / Underground mining engineering, 38 (2021):57-65,
https://doi.org/10.5937/podrad2138057Q . .

TY  - CONF
AU  - Martinović, Sanja
AU  - Vlahović, Milica
AU  - Đorđević, Nataša G.
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5991
AB  - Modifikacija konvencionalnih građevinskih materijala obično se izvodi upotrebom različitih otpadnih materijala. U ovom istraživanju biće prikazana upotreba sekundarnog sumpora kao veziva u betonu. Sumporni beton je termoplastični kompozit koji se sastoji od mineralnog agregata i punila, sa sumporom kao vezivom na temperaturi višoj od tačke očvršćavanja sumpora. Ovaj relativno nov građevinski materijal može da zameni konvencionalni Portland cementni beton u raznim konstrukcijama. U ovom radu biće prikazana svojstva sumpornog betona, kao i rezultati ispitivanja njegove postojanosti u agresivnim sredinama. U cilju ispitivanja svojstava, primenjene su destruktivne i nedestruktivne metode, dok su svojstva korelisana sa strukturom materijala.
PB  - Институт за технологију нуклеарних и других минералних сировина
C3  - Zbornik radova - XII Симпозијум са међународним учешћем „Рударство 2021“, 1-4. 06. 2021, Врњачка Бања, Србија / Proceedings - 12st Symposium with international participation - Sustainable development in mining and energy, "Mining 2021", 1-4. 06. 2021, Vrnjačka Banja, Serbia
T1  - Possibilities of waste sulfur valorization in eco-friendly products
SP  - 84
EP  - 101
UR  - https://hdl.handle.net/21.15107/rcub_cer_5991
ER  - 

@conference{
author = "Martinović, Sanja and Vlahović, Milica and Đorđević, Nataša G.",
year = "2021",
abstract = "Modifikacija konvencionalnih građevinskih materijala obično se izvodi upotrebom različitih otpadnih materijala. U ovom istraživanju biće prikazana upotreba sekundarnog sumpora kao veziva u betonu. Sumporni beton je termoplastični kompozit koji se sastoji od mineralnog agregata i punila, sa sumporom kao vezivom na temperaturi višoj od tačke očvršćavanja sumpora. Ovaj relativno nov građevinski materijal može da zameni konvencionalni Portland cementni beton u raznim konstrukcijama. U ovom radu biće prikazana svojstva sumpornog betona, kao i rezultati ispitivanja njegove postojanosti u agresivnim sredinama. U cilju ispitivanja svojstava, primenjene su destruktivne i nedestruktivne metode, dok su svojstva korelisana sa strukturom materijala.",
publisher = "Институт за технологију нуклеарних и других минералних сировина",
journal = "Zbornik radova - XII Симпозијум са међународним учешћем „Рударство 2021“, 1-4. 06. 2021, Врњачка Бања, Србија / Proceedings - 12st Symposium with international participation - Sustainable development in mining and energy, "Mining 2021", 1-4. 06. 2021, Vrnjačka Banja, Serbia",
title = "Possibilities of waste sulfur valorization in eco-friendly products",
pages = "84-101",
url = "https://hdl.handle.net/21.15107/rcub_cer_5991"
}

Martinović, S., Vlahović, M.,& Đorđević, N. G.. (2021). Possibilities of waste sulfur valorization in eco-friendly products. in Zbornik radova - XII Симпозијум са међународним учешћем „Рударство 2021“, 1-4. 06. 2021, Врњачка Бања, Србија / Proceedings - 12st Symposium with international participation - Sustainable development in mining and energy, "Mining 2021", 1-4. 06. 2021, Vrnjačka Banja, Serbia
Институт за технологију нуклеарних и других минералних сировина., 84-101.
https://hdl.handle.net/21.15107/rcub_cer_5991

Martinović S, Vlahović M, Đorđević NG. Possibilities of waste sulfur valorization in eco-friendly products. in Zbornik radova - XII Симпозијум са међународним учешћем „Рударство 2021“, 1-4. 06. 2021, Врњачка Бања, Србија / Proceedings - 12st Symposium with international participation - Sustainable development in mining and energy, "Mining 2021", 1-4. 06. 2021, Vrnjačka Banja, Serbia. 2021;:84-101.
https://hdl.handle.net/21.15107/rcub_cer_5991 .

Martinović, Sanja, Vlahović, Milica, Đorđević, Nataša G., "Possibilities of waste sulfur valorization in eco-friendly products" in Zbornik radova - XII Симпозијум са међународним учешћем „Рударство 2021“, 1-4. 06. 2021, Врњачка Бања, Србија / Proceedings - 12st Symposium with international participation - Sustainable development in mining and energy, "Mining 2021", 1-4. 06. 2021, Vrnjačka Banja, Serbia (2021):84-101,
https://hdl.handle.net/21.15107/rcub_cer_5991 .

TY  - CONF
AU  - Đorđević, Nataša G.
AU  - Mihajlović, Slavica
AU  - Vlahović, Milica
AU  - Martinović, Sanja
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6011
AB  - U toku mehanohemijske aktivacije na materijalu dolazi do promena koje mogu da dovedu do različitih fenomena. U ovom istraživanju mehanohemijski je aktiviran natrijum karbonat tokom 2, 7, 14 i 28 minuta. Aktivacija je vršena u vibro mlinu pri frekfenciji od 3000 oscilacija u minuti (mleveno je po 50g Na2CO3 anhidrovanog). Nakon mehanohemijske aktivacije uzorci su izloženi sobnim uslovima u prisustvu vlage i ugljen dioksida, u trajanju od 31 dana. U tom periodu (period relaksacijie) praćene su transformacije koje su se dešavale na aktiviranim uzorcima. U cilju praćenja kvalitativnih promena na aktiviranim uzorcija korišćena je infracrvena spektralna analiza. Natrijum karbonat je dobar apsorbent ugljen dioksida, i istovremeno je material koji dobro odgovara na uticaj mehaničke energije. Praćen je mehanizam nastajanja natrijum bikarbonata iz mehanohemijski aktiviranog natrijum. Ispitivanja FTIR metodom su izvršena u funkciji od vremena aktivacije, i vremena relaksacije. Praćene su karakteristične CO32-, HCO3- i OH- grupe.
PB  - Институт за технологију нуклеарних и других минералних сировина
C3  - Zbornik radova - XII Симпозијум са међународним учешћем „Рударство 2021“, 1. - 04. 06. 2021. Врњачка Бања, Србија / Proceedings - 12st Symposium with international participation - Sustainable development in mining and energy, "Mining 2021", 04. 06. 2021., Vrnjačka Banja, Serbia
T1  - Активација чврстих дисперзних материјала
SP  - 45
EP  - 51
UR  - https://hdl.handle.net/21.15107/rcub_cer_6011
ER  - 

@conference{
author = "Đorđević, Nataša G. and Mihajlović, Slavica and Vlahović, Milica and Martinović, Sanja",
year = "2021",
abstract = "U toku mehanohemijske aktivacije na materijalu dolazi do promena koje mogu da dovedu do različitih fenomena. U ovom istraživanju mehanohemijski je aktiviran natrijum karbonat tokom 2, 7, 14 i 28 minuta. Aktivacija je vršena u vibro mlinu pri frekfenciji od 3000 oscilacija u minuti (mleveno je po 50g Na2CO3 anhidrovanog). Nakon mehanohemijske aktivacije uzorci su izloženi sobnim uslovima u prisustvu vlage i ugljen dioksida, u trajanju od 31 dana. U tom periodu (period relaksacijie) praćene su transformacije koje su se dešavale na aktiviranim uzorcima. U cilju praćenja kvalitativnih promena na aktiviranim uzorcija korišćena je infracrvena spektralna analiza. Natrijum karbonat je dobar apsorbent ugljen dioksida, i istovremeno je material koji dobro odgovara na uticaj mehaničke energije. Praćen je mehanizam nastajanja natrijum bikarbonata iz mehanohemijski aktiviranog natrijum. Ispitivanja FTIR metodom su izvršena u funkciji od vremena aktivacije, i vremena relaksacije. Praćene su karakteristične CO32-, HCO3- i OH- grupe.",
publisher = "Институт за технологију нуклеарних и других минералних сировина",
journal = "Zbornik radova - XII Симпозијум са међународним учешћем „Рударство 2021“, 1. - 04. 06. 2021. Врњачка Бања, Србија / Proceedings - 12st Symposium with international participation - Sustainable development in mining and energy, "Mining 2021", 04. 06. 2021., Vrnjačka Banja, Serbia",
title = "Активација чврстих дисперзних материјала",
pages = "45-51",
url = "https://hdl.handle.net/21.15107/rcub_cer_6011"
}

Đorđević, N. G., Mihajlović, S., Vlahović, M.,& Martinović, S.. (2021). Активација чврстих дисперзних материјала. in Zbornik radova - XII Симпозијум са међународним учешћем „Рударство 2021“, 1. - 04. 06. 2021. Врњачка Бања, Србија / Proceedings - 12st Symposium with international participation - Sustainable development in mining and energy, "Mining 2021", 04. 06. 2021., Vrnjačka Banja, Serbia
Институт за технологију нуклеарних и других минералних сировина., 45-51.
https://hdl.handle.net/21.15107/rcub_cer_6011

Đorđević NG, Mihajlović S, Vlahović M, Martinović S. Активација чврстих дисперзних материјала. in Zbornik radova - XII Симпозијум са међународним учешћем „Рударство 2021“, 1. - 04. 06. 2021. Врњачка Бања, Србија / Proceedings - 12st Symposium with international participation - Sustainable development in mining and energy, "Mining 2021", 04. 06. 2021., Vrnjačka Banja, Serbia. 2021;:45-51.
https://hdl.handle.net/21.15107/rcub_cer_6011 .

Đorđević, Nataša G., Mihajlović, Slavica, Vlahović, Milica, Martinović, Sanja, "Активација чврстих дисперзних материјала" in Zbornik radova - XII Симпозијум са међународним учешћем „Рударство 2021“, 1. - 04. 06. 2021. Врњачка Бања, Србија / Proceedings - 12st Symposium with international participation - Sustainable development in mining and energy, "Mining 2021", 04. 06. 2021., Vrnjačka Banja, Serbia (2021):45-51,
https://hdl.handle.net/21.15107/rcub_cer_6011 .

TY  - JOUR
AU  - Pantović Spajić, Katarina
AU  - Marković, Branislav
AU  - Pavlović, Miroslav
AU  - Sokić, Miroslav
AU  - Zildžović, Snežana
AU  - Đorđević, Nataša
AU  - Stojanović, Ksenija
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6558
AB  - The study is focused on the determination of the most effective chemical leaching process for the simultaneous demineralization/deashing and desulfuri­zation of subbituminous coal from the Bogovina Basin. Coal was treated for 30 min, at different temperatures, using variable concentrations of hydro­chloric, nitric, acetic and citric acids; hydrogen peroxide, mixture of hyd­rogen peroxide and nitric acid (pH 2), as well as by the stepwise leaching pro­cess (nitric acid + mixture of hydrogen peroxide and nitric acid, pH 2). The changes in mineral composition, caused by the chemical leaching, are followed using X-ray diffraction, whereas alterations of coal organic matter are tracked by Fourier-transform infrared spectroscopy and the content of fixed carbon. Inorganic acid leaching, regardless of the temperature and acid concentration, enabled the successful deashing of coal, whereas the percent of desulfurization was insufficient. The organic acid leaching was not satisfactory for both, deashing and desulfurization. Leaching by H2O2 and H2O2/HNO3 mixture (pH 2) resulted in moderate desulfurization, but the ash reduction was low. The most suitable method for the simultaneous effective ash (78 wt.%) and the sulfur (66 wt. %) removal from Bogovina coal is the two-step leaching, com­bining 10 vol. % HNO3 and mixture of 35 vol. % H2O2/10 vol. % HNO3 of pH 2 at 60 °C.
AB  - Циљ рада је одређивање најефикаснијег хемијског третмана за истовремену деминерализацију/отпепељавање и одсумпоравање мрког угља из басена Боговина. Угаљ је
третиран 30 min, на различитим температурама, користећи различите концентрације
хлороводоничне, азотне, сирћетне и лимунске киселине; водоник-пероксид, смешу
водоник-пероксида и азотне киселине (pH 2), као и двостепено испирање (азотна киселина + смеша водоник-пероксида и азотне киселине, pH 2). Промене у минералном саставу, проузроковане хемијским третманом, праћене су дифракцијом рендгентских зрака, док су промене органске супстанце угља праћене помоћу инфрацрвене спектроскопије са Фуријеовом трансформацијом и садржаја фиксног угљеника. Третман неорганским киселинама, независно од температуре и концентрације реагенса, омогућио је успешно отпепељавање угља, док је проценат одсумпоравања био недовољан. Третман органским киселинама није био задовољавајући, ни за отпепељавање, ни за одсумпоравање. Третман угља са Н2О2 и смешом Н2О2/HNO3 (pH 2) резултовао је умереним одсумпоравањем, али је смањење садржаја пепела било мало. Најприкладнија метода за истовремено ефикасно уклањање пепела (78 мас. %) и сумпора (66 мас. %) из боговинског угља је двостепено испирање, комбинацијом 10 запр. % HNO3 и смеше 35 запр. % H2O2/10 запр. % HNO3 (pH 2) на 60 °С.
PB  - Belgrade, Serbia : Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Deashing and Desulfurization of Subbituminous Coal from the East Field (Bogovina Basin, Serbia) – Insights from Chemical Leaching
T1  - Oтпепељавање и одсумпоравање мрког угља из источноg пољa басена Боговина (Србија) хемијским третманом
VL  - 86
IS  - 11
SP  - 1113
EP  - 1126
DO  - 10.2298/JSC210719061P
ER  - 

@article{
author = "Pantović Spajić, Katarina and Marković, Branislav and Pavlović, Miroslav and Sokić, Miroslav and Zildžović, Snežana and Đorđević, Nataša and Stojanović, Ksenija",
year = "2021",
abstract = "The study is focused on the determination of the most effective chemical leaching process for the simultaneous demineralization/deashing and desulfuri­zation of subbituminous coal from the Bogovina Basin. Coal was treated for 30 min, at different temperatures, using variable concentrations of hydro­chloric, nitric, acetic and citric acids; hydrogen peroxide, mixture of hyd­rogen peroxide and nitric acid (pH 2), as well as by the stepwise leaching pro­cess (nitric acid + mixture of hydrogen peroxide and nitric acid, pH 2). The changes in mineral composition, caused by the chemical leaching, are followed using X-ray diffraction, whereas alterations of coal organic matter are tracked by Fourier-transform infrared spectroscopy and the content of fixed carbon. Inorganic acid leaching, regardless of the temperature and acid concentration, enabled the successful deashing of coal, whereas the percent of desulfurization was insufficient. The organic acid leaching was not satisfactory for both, deashing and desulfurization. Leaching by H2O2 and H2O2/HNO3 mixture (pH 2) resulted in moderate desulfurization, but the ash reduction was low. The most suitable method for the simultaneous effective ash (78 wt.%) and the sulfur (66 wt. %) removal from Bogovina coal is the two-step leaching, com­bining 10 vol. % HNO3 and mixture of 35 vol. % H2O2/10 vol. % HNO3 of pH 2 at 60 °C., Циљ рада је одређивање најефикаснијег хемијског третмана за истовремену деминерализацију/отпепељавање и одсумпоравање мрког угља из басена Боговина. Угаљ је
третиран 30 min, на различитим температурама, користећи различите концентрације
хлороводоничне, азотне, сирћетне и лимунске киселине; водоник-пероксид, смешу
водоник-пероксида и азотне киселине (pH 2), као и двостепено испирање (азотна киселина + смеша водоник-пероксида и азотне киселине, pH 2). Промене у минералном саставу, проузроковане хемијским третманом, праћене су дифракцијом рендгентских зрака, док су промене органске супстанце угља праћене помоћу инфрацрвене спектроскопије са Фуријеовом трансформацијом и садржаја фиксног угљеника. Третман неорганским киселинама, независно од температуре и концентрације реагенса, омогућио је успешно отпепељавање угља, док је проценат одсумпоравања био недовољан. Третман органским киселинама није био задовољавајући, ни за отпепељавање, ни за одсумпоравање. Третман угља са Н2О2 и смешом Н2О2/HNO3 (pH 2) резултовао је умереним одсумпоравањем, али је смањење садржаја пепела било мало. Најприкладнија метода за истовремено ефикасно уклањање пепела (78 мас. %) и сумпора (66 мас. %) из боговинског угља је двостепено испирање, комбинацијом 10 запр. % HNO3 и смеше 35 запр. % H2O2/10 запр. % HNO3 (pH 2) на 60 °С.",
publisher = "Belgrade, Serbia : Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Deashing and Desulfurization of Subbituminous Coal from the East Field (Bogovina Basin, Serbia) – Insights from Chemical Leaching, Oтпепељавање и одсумпоравање мрког угља из источноg пољa басена Боговина (Србија) хемијским третманом",
volume = "86",
number = "11",
pages = "1113-1126",
doi = "10.2298/JSC210719061P"
}

Pantović Spajić, K., Marković, B., Pavlović, M., Sokić, M., Zildžović, S., Đorđević, N.,& Stojanović, K.. (2021). Deashing and Desulfurization of Subbituminous Coal from the East Field (Bogovina Basin, Serbia) – Insights from Chemical Leaching. in Journal of the Serbian Chemical Society
Belgrade, Serbia : Serbian Chemical Society., 86(11), 1113-1126.
https://doi.org/10.2298/JSC210719061P

Pantović Spajić K, Marković B, Pavlović M, Sokić M, Zildžović S, Đorđević N, Stojanović K. Deashing and Desulfurization of Subbituminous Coal from the East Field (Bogovina Basin, Serbia) – Insights from Chemical Leaching. in Journal of the Serbian Chemical Society. 2021;86(11):1113-1126.
doi:10.2298/JSC210719061P .

Pantović Spajić, Katarina, Marković, Branislav, Pavlović, Miroslav, Sokić, Miroslav, Zildžović, Snežana, Đorđević, Nataša, Stojanović, Ksenija, "Deashing and Desulfurization of Subbituminous Coal from the East Field (Bogovina Basin, Serbia) – Insights from Chemical Leaching" in Journal of the Serbian Chemical Society, 86, no. 11 (2021):1113-1126,
https://doi.org/10.2298/JSC210719061P . .

TY  - CONF
AU  - Đorđević, Nataša G.
AU  - Martinović, Sanja
AU  - Mihajlović, Slavica
AU  - Vlahović, Milica
AU  - Lozanović Šajić, Jasmina
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4896
AB  - Sodium carbonate material is used as a good sorbent of carbon dioxide from the atmosphere,
and has gained increasing importance in environmental protection.In order to enhance its
sorption ability, mechanochemicaly activatied sodium carbonate was investigated,and the
occurred changes after the activation and the relaxation time in a controlled environment were
monitored. Activation was performed in a vibro-mill for 2 and 7 minutes, and the activated
samples were placed in an atmosphere of carbon dioxide at a humidity of 95 % for 96 hours,
(the relaxation time). Differential thermal and thermogravimetric analyses were applied with
the aim of determining the changes that occurred on the activated samples during the
relaxation period.The decomposition temperature change of activated Na2CO3 samples, mass
loss, and conversion degree of Na2CO3 to NaHCO3 was monitored depending on activation
and relaxation time periods.
PB  - Serbia : Serbian Chemical Society
C3  - Program and the book of abstracts - Serbian Ceramic Society Conference advanced ceramics and application: new frontiers in multifunctional  material science and processing
T1  - DTA/TG Analysis And Phase Changes Of Activated Na2CO3
VL  - 9
SP  - 39
UR  - https://hdl.handle.net/21.15107/rcub_cer_4896
ER  - 

@conference{
author = "Đorđević, Nataša G. and Martinović, Sanja and Mihajlović, Slavica and Vlahović, Milica and Lozanović Šajić, Jasmina",
year = "2021",
abstract = "Sodium carbonate material is used as a good sorbent of carbon dioxide from the atmosphere,
and has gained increasing importance in environmental protection.In order to enhance its
sorption ability, mechanochemicaly activatied sodium carbonate was investigated,and the
occurred changes after the activation and the relaxation time in a controlled environment were
monitored. Activation was performed in a vibro-mill for 2 and 7 minutes, and the activated
samples were placed in an atmosphere of carbon dioxide at a humidity of 95 % for 96 hours,
(the relaxation time). Differential thermal and thermogravimetric analyses were applied with
the aim of determining the changes that occurred on the activated samples during the
relaxation period.The decomposition temperature change of activated Na2CO3 samples, mass
loss, and conversion degree of Na2CO3 to NaHCO3 was monitored depending on activation
and relaxation time periods.",
publisher = "Serbia : Serbian Chemical Society",
journal = "Program and the book of abstracts - Serbian Ceramic Society Conference advanced ceramics and application: new frontiers in multifunctional  material science and processing",
title = "DTA/TG Analysis And Phase Changes Of Activated Na2CO3",
volume = "9",
pages = "39",
url = "https://hdl.handle.net/21.15107/rcub_cer_4896"
}

Đorđević, N. G., Martinović, S., Mihajlović, S., Vlahović, M.,& Lozanović Šajić, J.. (2021). DTA/TG Analysis And Phase Changes Of Activated Na2CO3. in Program and the book of abstracts - Serbian Ceramic Society Conference advanced ceramics and application: new frontiers in multifunctional  material science and processing
Serbia : Serbian Chemical Society., 9, 39.
https://hdl.handle.net/21.15107/rcub_cer_4896

Đorđević NG, Martinović S, Mihajlović S, Vlahović M, Lozanović Šajić J. DTA/TG Analysis And Phase Changes Of Activated Na2CO3. in Program and the book of abstracts - Serbian Ceramic Society Conference advanced ceramics and application: new frontiers in multifunctional  material science and processing. 2021;9:39.
https://hdl.handle.net/21.15107/rcub_cer_4896 .

Đorđević, Nataša G., Martinović, Sanja, Mihajlović, Slavica, Vlahović, Milica, Lozanović Šajić, Jasmina, "DTA/TG Analysis And Phase Changes Of Activated Na2CO3" in Program and the book of abstracts - Serbian Ceramic Society Conference advanced ceramics and application: new frontiers in multifunctional  material science and processing, 9 (2021):39,
https://hdl.handle.net/21.15107/rcub_cer_4896 .

TY  - CONF
AU  - Đorđević, Nataša G.
AU  - Peleš, Adriana
AU  - Obradović, Nina
AU  - Vlahović, Milica
AU  - Mihajlović, Slavica
AU  - Martinović, Sanja
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4917
AB  - The mechanical activation of the starting mixtures of cordierite (2MgO*2Al2O3*5SiO2) with 5.00 mass % TiO2 was performed in a high energy ball mill during 10-80 min. The applied compaction pressure before the sintering process was 2t/cm2. The sintering process was performed at 1350°C for 2h and 4h in air atmosphere. Scanning electron microscopy was performed to analyze the microstructure of both compacted and sintered samples. Atomic force microscope was used to investigate the surface of the sintered samples. This paper investigates the influence of prolonged sintering time on the densities of the sintered samples, along with electrical properties.
AB  - Mehanička aktivacija početnih smeša kordierita (2MgO*2Al2O3*5SiO2) sa 5.00 mas. % TiO2 izvršena je u visokoenergetskom mlinu sa kuglama tokom 10-80 min. Primenjeni pritisak presovanja pre procesa sinterovanja bio je 2 t/cm2. Proces sinterovanja je izveden na 1350 °C tokom 2h i 4h u vazdušnoj atmosferi. Skenirajuća elektronska mikroskopija je izvršena u cilju analize mikrostrukture presovanih i sinterovanih uzoraka. Za ispitivanje površine sinterovanih uzoraka korišćen je mikroskop atomskih sila. Ovaj rad istražuje uticaj produženog vremena sinterovanja na gustinu sinterovanih uzoraka zajedno sa električnim svojstvima.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS
C3  - Zbornik radova / 9. Međunarodna konferencija o obnovljivim izvorima električne energije, Beograd, 15. oktobar 2021 = Proceedings / 9th International Conference on Renewable Electrical Power Sources, Belgrade, October 15, 2021
T1  - Influence of sintering time on density properties and SEM analysis of cordierite-based ceramics
T1  - Uticaj vremena sinterovanja na gustinu i SEM analiza kordijeritne keramike
SP  - 265
EP  - 268
UR  - https://hdl.handle.net/21.15107/rcub_dais_12354
ER  - 

@conference{
author = "Đorđević, Nataša G. and Peleš, Adriana and Obradović, Nina and Vlahović, Milica and Mihajlović, Slavica and Martinović, Sanja",
year = "2021",
abstract = "The mechanical activation of the starting mixtures of cordierite (2MgO*2Al2O3*5SiO2) with 5.00 mass % TiO2 was performed in a high energy ball mill during 10-80 min. The applied compaction pressure before the sintering process was 2t/cm2. The sintering process was performed at 1350°C for 2h and 4h in air atmosphere. Scanning electron microscopy was performed to analyze the microstructure of both compacted and sintered samples. Atomic force microscope was used to investigate the surface of the sintered samples. This paper investigates the influence of prolonged sintering time on the densities of the sintered samples, along with electrical properties., Mehanička aktivacija početnih smeša kordierita (2MgO*2Al2O3*5SiO2) sa 5.00 mas. % TiO2 izvršena je u visokoenergetskom mlinu sa kuglama tokom 10-80 min. Primenjeni pritisak presovanja pre procesa sinterovanja bio je 2 t/cm2. Proces sinterovanja je izveden na 1350 °C tokom 2h i 4h u vazdušnoj atmosferi. Skenirajuća elektronska mikroskopija je izvršena u cilju analize mikrostrukture presovanih i sinterovanih uzoraka. Za ispitivanje površine sinterovanih uzoraka korišćen je mikroskop atomskih sila. Ovaj rad istražuje uticaj produženog vremena sinterovanja na gustinu sinterovanih uzoraka zajedno sa električnim svojstvima.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS",
journal = "Zbornik radova / 9. Međunarodna konferencija o obnovljivim izvorima električne energije, Beograd, 15. oktobar 2021 = Proceedings / 9th International Conference on Renewable Electrical Power Sources, Belgrade, October 15, 2021",
title = "Influence of sintering time on density properties and SEM analysis of cordierite-based ceramics, Uticaj vremena sinterovanja na gustinu i SEM analiza kordijeritne keramike",
pages = "265-268",
url = "https://hdl.handle.net/21.15107/rcub_dais_12354"
}

Đorđević, N. G., Peleš, A., Obradović, N., Vlahović, M., Mihajlović, S.,& Martinović, S.. (2021). Influence of sintering time on density properties and SEM analysis of cordierite-based ceramics. in Zbornik radova / 9. Međunarodna konferencija o obnovljivim izvorima električne energije, Beograd, 15. oktobar 2021 = Proceedings / 9th International Conference on Renewable Electrical Power Sources, Belgrade, October 15, 2021
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS., 265-268.
https://hdl.handle.net/21.15107/rcub_dais_12354

Đorđević NG, Peleš A, Obradović N, Vlahović M, Mihajlović S, Martinović S. Influence of sintering time on density properties and SEM analysis of cordierite-based ceramics. in Zbornik radova / 9. Međunarodna konferencija o obnovljivim izvorima električne energije, Beograd, 15. oktobar 2021 = Proceedings / 9th International Conference on Renewable Electrical Power Sources, Belgrade, October 15, 2021. 2021;:265-268.
https://hdl.handle.net/21.15107/rcub_dais_12354 .

Đorđević, Nataša G., Peleš, Adriana, Obradović, Nina, Vlahović, Milica, Mihajlović, Slavica, Martinović, Sanja, "Influence of sintering time on density properties and SEM analysis of cordierite-based ceramics" in Zbornik radova / 9. Međunarodna konferencija o obnovljivim izvorima električne energije, Beograd, 15. oktobar 2021 = Proceedings / 9th International Conference on Renewable Electrical Power Sources, Belgrade, October 15, 2021 (2021):265-268,
https://hdl.handle.net/21.15107/rcub_dais_12354 .

TY  - CONF
AU  - Đorđević, Nataša G.
AU  - Peleš, Adriana
AU  - Obradović, Nina
AU  - Vlahović, Milica
AU  - Mihajlović, Slavica
AU  - Martinović, Sanja
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4918
AB  - The mechanical activation of the starting mixtures of cordierite (2MgO*2Al2O3*5SiO2) with 5.00 mass % TiO2 was performed in a high energy ball mill during 10-80 min. The applied compaction pressure before the sintering process was 2t/cm2. The sintering process was performed at 1350°C for 2h and 4h in air atmosphere. Scanning electron microscopy was performed to analyze the microstructure of both compacted and sintered samples. Atomic force microscope was used to investigate the surface of the sintered samples. This paper investigates the influence of prolonged sintering time on the densities of the sintered samples, along with electrical properties.
AB  - Mehanička aktivacija početnih smeša kordierita (2MgO*2Al2O3*5SiO2) sa 5.00 mas. % TiO2 izvršena je u visokoenergetskom mlinu sa kuglama tokom 10-80 min. Primenjeni pritisak presovanja pre procesa sinterovanja bio je 2 t/cm2. Proces sinterovanja je izveden na 1350 °C tokom 2h i 4h u vazdušnoj atmosferi. Skenirajuća elektronska mikroskopija je izvršena u cilju analize mikrostrukture presovanih i sinterovanih uzoraka. Za ispitivanje površine sinterovanih uzoraka korišćen je mikroskop atomskih sila. Ovaj rad istražuje uticaj produženog vremena sinterovanja na gustinu sinterovanih uzoraka zajedno sa električnim svojstvima.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS
C3  - Zbornik radova / 9. Međunarodna konferencija o obnovljivim izvorima električne energije, Beograd, 15. oktobar 2021 = Proceedings / 9th International Conference on Renewable Electrical Power Sources, Belgrade, October 15, 2021
T1  - Electrical properties of isothermally sintered cordierite-based ceramics as function of sintering and activation time
T1  - Električna svojstva izotermski sinterovane keramike na bazi kordierita kao funkcija vremena sinterovanja i aktivacije
SP  - 269
EP  - 272
UR  - https://hdl.handle.net/21.15107/rcub_dais_12355
ER  - 

@conference{
author = "Đorđević, Nataša G. and Peleš, Adriana and Obradović, Nina and Vlahović, Milica and Mihajlović, Slavica and Martinović, Sanja",
year = "2021",
abstract = "The mechanical activation of the starting mixtures of cordierite (2MgO*2Al2O3*5SiO2) with 5.00 mass % TiO2 was performed in a high energy ball mill during 10-80 min. The applied compaction pressure before the sintering process was 2t/cm2. The sintering process was performed at 1350°C for 2h and 4h in air atmosphere. Scanning electron microscopy was performed to analyze the microstructure of both compacted and sintered samples. Atomic force microscope was used to investigate the surface of the sintered samples. This paper investigates the influence of prolonged sintering time on the densities of the sintered samples, along with electrical properties., Mehanička aktivacija početnih smeša kordierita (2MgO*2Al2O3*5SiO2) sa 5.00 mas. % TiO2 izvršena je u visokoenergetskom mlinu sa kuglama tokom 10-80 min. Primenjeni pritisak presovanja pre procesa sinterovanja bio je 2 t/cm2. Proces sinterovanja je izveden na 1350 °C tokom 2h i 4h u vazdušnoj atmosferi. Skenirajuća elektronska mikroskopija je izvršena u cilju analize mikrostrukture presovanih i sinterovanih uzoraka. Za ispitivanje površine sinterovanih uzoraka korišćen je mikroskop atomskih sila. Ovaj rad istražuje uticaj produženog vremena sinterovanja na gustinu sinterovanih uzoraka zajedno sa električnim svojstvima.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS",
journal = "Zbornik radova / 9. Međunarodna konferencija o obnovljivim izvorima električne energije, Beograd, 15. oktobar 2021 = Proceedings / 9th International Conference on Renewable Electrical Power Sources, Belgrade, October 15, 2021",
title = "Electrical properties of isothermally sintered cordierite-based ceramics as function of sintering and activation time, Električna svojstva izotermski sinterovane keramike na bazi kordierita kao funkcija vremena sinterovanja i aktivacije",
pages = "269-272",
url = "https://hdl.handle.net/21.15107/rcub_dais_12355"
}

Đorđević, N. G., Peleš, A., Obradović, N., Vlahović, M., Mihajlović, S.,& Martinović, S.. (2021). Electrical properties of isothermally sintered cordierite-based ceramics as function of sintering and activation time. in Zbornik radova / 9. Međunarodna konferencija o obnovljivim izvorima električne energije, Beograd, 15. oktobar 2021 = Proceedings / 9th International Conference on Renewable Electrical Power Sources, Belgrade, October 15, 2021
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS., 269-272.
https://hdl.handle.net/21.15107/rcub_dais_12355

Đorđević NG, Peleš A, Obradović N, Vlahović M, Mihajlović S, Martinović S. Electrical properties of isothermally sintered cordierite-based ceramics as function of sintering and activation time. in Zbornik radova / 9. Međunarodna konferencija o obnovljivim izvorima električne energije, Beograd, 15. oktobar 2021 = Proceedings / 9th International Conference on Renewable Electrical Power Sources, Belgrade, October 15, 2021. 2021;:269-272.
https://hdl.handle.net/21.15107/rcub_dais_12355 .

Đorđević, Nataša G., Peleš, Adriana, Obradović, Nina, Vlahović, Milica, Mihajlović, Slavica, Martinović, Sanja, "Electrical properties of isothermally sintered cordierite-based ceramics as function of sintering and activation time" in Zbornik radova / 9. Međunarodna konferencija o obnovljivim izvorima električne energije, Beograd, 15. oktobar 2021 = Proceedings / 9th International Conference on Renewable Electrical Power Sources, Belgrade, October 15, 2021 (2021):269-272,
https://hdl.handle.net/21.15107/rcub_dais_12355 .

TY  - CONF
AU  - Đorđević, Nataša G.
AU  - Mihajlović, Slavica
AU  - Vlahović, Milica
AU  - Martinović, Sanja
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5938
AB  - Sodium carbonate samples were mechanically activated in a vibro mill. The increase in the free surface area of the activated samples was monitored by the BET method and the state of the crystal lattice by the diffraction method. The analysis of the results showed a significant increase in the free surface of the activated material as well as significant changes in the crystal structure of the samples due to grinding in a vibro mill. Such activation of sodium carbonate would enable a significant increase in the sorption properties of sodium carbonate and thus its application in environmental protection.
PB  - University of Belgrade, Technical faculty in Bor
C3  - Proceedings - XIV International Mineral Processing and Recycling Conference (IMPRC 2021), May 12-14, 2021, Belgrade, Serbia
T1  - Application of mechanochemically activated sodium carbonate in environmental protection
SP  - 72
EP  - 77
UR  - https://hdl.handle.net/21.15107/rcub_cer_5938
ER  - 

@conference{
author = "Đorđević, Nataša G. and Mihajlović, Slavica and Vlahović, Milica and Martinović, Sanja",
year = "2021",
abstract = "Sodium carbonate samples were mechanically activated in a vibro mill. The increase in the free surface area of the activated samples was monitored by the BET method and the state of the crystal lattice by the diffraction method. The analysis of the results showed a significant increase in the free surface of the activated material as well as significant changes in the crystal structure of the samples due to grinding in a vibro mill. Such activation of sodium carbonate would enable a significant increase in the sorption properties of sodium carbonate and thus its application in environmental protection.",
publisher = "University of Belgrade, Technical faculty in Bor",
journal = "Proceedings - XIV International Mineral Processing and Recycling Conference (IMPRC 2021), May 12-14, 2021, Belgrade, Serbia",
title = "Application of mechanochemically activated sodium carbonate in environmental protection",
pages = "72-77",
url = "https://hdl.handle.net/21.15107/rcub_cer_5938"
}

Đorđević, N. G., Mihajlović, S., Vlahović, M.,& Martinović, S.. (2021). Application of mechanochemically activated sodium carbonate in environmental protection. in Proceedings - XIV International Mineral Processing and Recycling Conference (IMPRC 2021), May 12-14, 2021, Belgrade, Serbia
University of Belgrade, Technical faculty in Bor., 72-77.
https://hdl.handle.net/21.15107/rcub_cer_5938

Đorđević NG, Mihajlović S, Vlahović M, Martinović S. Application of mechanochemically activated sodium carbonate in environmental protection. in Proceedings - XIV International Mineral Processing and Recycling Conference (IMPRC 2021), May 12-14, 2021, Belgrade, Serbia. 2021;:72-77.
https://hdl.handle.net/21.15107/rcub_cer_5938 .

Đorđević, Nataša G., Mihajlović, Slavica, Vlahović, Milica, Martinović, Sanja, "Application of mechanochemically activated sodium carbonate in environmental protection" in Proceedings - XIV International Mineral Processing and Recycling Conference (IMPRC 2021), May 12-14, 2021, Belgrade, Serbia (2021):72-77,
https://hdl.handle.net/21.15107/rcub_cer_5938 .

TY  - CONF
AU  - Vlahović, Milica
AU  - Martinović, Sanja
AU  - Đorđević, Nataša G.
AU  - Volkov Husović, Tatjana
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5946
AB  - Among the variety of advanced materials with exceptional properties and applications, shape
memory alloys (SMAs) have a unique ability to return to previously defined shapes or sizes if subjected to the relevant thermal treatment. The memory effect can be reached only in the presence of a specific phase transformation, reversible austenite to the martensite phase. There are several basic types of SMAs, such as Ni-Ti (nitinol), Cu-based, and Fe-based alloys. The economic effect (low price) is the main advantage of Cu-based SMAs compared with other SMAs. Namely, these Cu-Al-Ni alloys can be applied in various industrial fields, especially when high transformation temperatures are required (near 200 °C), thanks to their excellent thermal stability and high transformation temperatures.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS
C3  - Proceedings - 9th International Conference on Renewable Electrical Power Sources - MKOIEE, October 15, 2021, Belgrade, Serbia
T1  - Manufacture and characteristics of shape memory alloys for electronic purposes
SP  - 55
EP  - 63
UR  - https://hdl.handle.net/21.15107/rcub_cer_5946
ER  - 

@conference{
author = "Vlahović, Milica and Martinović, Sanja and Đorđević, Nataša G. and Volkov Husović, Tatjana",
year = "2021",
abstract = "Among the variety of advanced materials with exceptional properties and applications, shape
memory alloys (SMAs) have a unique ability to return to previously defined shapes or sizes if subjected to the relevant thermal treatment. The memory effect can be reached only in the presence of a specific phase transformation, reversible austenite to the martensite phase. There are several basic types of SMAs, such as Ni-Ti (nitinol), Cu-based, and Fe-based alloys. The economic effect (low price) is the main advantage of Cu-based SMAs compared with other SMAs. Namely, these Cu-Al-Ni alloys can be applied in various industrial fields, especially when high transformation temperatures are required (near 200 °C), thanks to their excellent thermal stability and high transformation temperatures.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS",
journal = "Proceedings - 9th International Conference on Renewable Electrical Power Sources - MKOIEE, October 15, 2021, Belgrade, Serbia",
title = "Manufacture and characteristics of shape memory alloys for electronic purposes",
pages = "55-63",
url = "https://hdl.handle.net/21.15107/rcub_cer_5946"
}

Vlahović, M., Martinović, S., Đorđević, N. G.,& Volkov Husović, T.. (2021). Manufacture and characteristics of shape memory alloys for electronic purposes. in Proceedings - 9th International Conference on Renewable Electrical Power Sources - MKOIEE, October 15, 2021, Belgrade, Serbia
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS., 55-63.
https://hdl.handle.net/21.15107/rcub_cer_5946

Vlahović M, Martinović S, Đorđević NG, Volkov Husović T. Manufacture and characteristics of shape memory alloys for electronic purposes. in Proceedings - 9th International Conference on Renewable Electrical Power Sources - MKOIEE, October 15, 2021, Belgrade, Serbia. 2021;:55-63.
https://hdl.handle.net/21.15107/rcub_cer_5946 .

Vlahović, Milica, Martinović, Sanja, Đorđević, Nataša G., Volkov Husović, Tatjana, "Manufacture and characteristics of shape memory alloys for electronic purposes" in Proceedings - 9th International Conference on Renewable Electrical Power Sources - MKOIEE, October 15, 2021, Belgrade, Serbia (2021):55-63,
https://hdl.handle.net/21.15107/rcub_cer_5946 .

TY  - CONF
AU  - Đorđević, Nataša G.
AU  - Vlahović, Milica
AU  - Mihajlović, Slavica
AU  - Martinović, Sanja
AU  - Vušović, Nenad
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5979
AB  - Sodium carbonate was mechanically activated for 7 minutes in a vibro mill at a frequency of 3000 oscillations per minute. Activated samples were stored in the air at room conditions for 31 days. To monitor the kinetics of the transformation process of sodium carbonate to bicarbonate, Fourier-transform infrared (FTIR) spectroscopy analysis was used and was performed as a function of relaxation time for characteristic groups observed: CO3 2–, HCO3 – and OH–. The obtained results provided kinetics parameters for the transformation of carbonate into bicarbonate as a result of chemisorption of moisture and carbon dioxide from the atmosphere.
PB  - University of Belgrade, Faculty of Mechanical Engineering
PB  - Serbian Tribology Society
C3  - Proceedings - 10th International Conference on Tribology–BALKANTRIB'20, 20 – 22 May 2021, Belgrade, Serbia
T1  - FTIR spectroscopy analysis of mechanochemically activated Na2CO3 during relaxation time
SP  - 201
EP  - 202
UR  - https://hdl.handle.net/21.15107/rcub_cer_5979
ER  - 

@conference{
author = "Đorđević, Nataša G. and Vlahović, Milica and Mihajlović, Slavica and Martinović, Sanja and Vušović, Nenad",
year = "2021",
abstract = "Sodium carbonate was mechanically activated for 7 minutes in a vibro mill at a frequency of 3000 oscillations per minute. Activated samples were stored in the air at room conditions for 31 days. To monitor the kinetics of the transformation process of sodium carbonate to bicarbonate, Fourier-transform infrared (FTIR) spectroscopy analysis was used and was performed as a function of relaxation time for characteristic groups observed: CO3 2–, HCO3 – and OH–. The obtained results provided kinetics parameters for the transformation of carbonate into bicarbonate as a result of chemisorption of moisture and carbon dioxide from the atmosphere.",
publisher = "University of Belgrade, Faculty of Mechanical Engineering, Serbian Tribology Society",
journal = "Proceedings - 10th International Conference on Tribology–BALKANTRIB'20, 20 – 22 May 2021, Belgrade, Serbia",
title = "FTIR spectroscopy analysis of mechanochemically activated Na2CO3 during relaxation time",
pages = "201-202",
url = "https://hdl.handle.net/21.15107/rcub_cer_5979"
}

Đorđević, N. G., Vlahović, M., Mihajlović, S., Martinović, S.,& Vušović, N.. (2021). FTIR spectroscopy analysis of mechanochemically activated Na2CO3 during relaxation time. in Proceedings - 10th International Conference on Tribology–BALKANTRIB'20, 20 – 22 May 2021, Belgrade, Serbia
University of Belgrade, Faculty of Mechanical Engineering., 201-202.
https://hdl.handle.net/21.15107/rcub_cer_5979

Đorđević NG, Vlahović M, Mihajlović S, Martinović S, Vušović N. FTIR spectroscopy analysis of mechanochemically activated Na2CO3 during relaxation time. in Proceedings - 10th International Conference on Tribology–BALKANTRIB'20, 20 – 22 May 2021, Belgrade, Serbia. 2021;:201-202.
https://hdl.handle.net/21.15107/rcub_cer_5979 .

Đorđević, Nataša G., Vlahović, Milica, Mihajlović, Slavica, Martinović, Sanja, Vušović, Nenad, "FTIR spectroscopy analysis of mechanochemically activated Na2CO3 during relaxation time" in Proceedings - 10th International Conference on Tribology–BALKANTRIB'20, 20 – 22 May 2021, Belgrade, Serbia (2021):201-202,
https://hdl.handle.net/21.15107/rcub_cer_5979 .

TY  - JOUR
AU  - Savić, Aleksandar R.
AU  - Vlahović, Milica
AU  - Martinović, Sanja
AU  - Đorđević, Nataša G.
AU  - Broćeta, Gordana
AU  - Volkov Husović, Tatjana
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3764
AB  - This study analyzes the feasibility of valorizing industrial by-product, fly ash from a
thermal power plant as a partial replacement of mineral filler-limestone for the production of
self-compacting concrete (SCC). Three types of SCC mixtures with different portions of fly
ash and the reference mixture with limestone were designed. The synthesized SCCs in the
fresh state were examined for density, entrained air content, flowability (Slump flow, Slump
flow time (t500), V-funnel time (tv)), passing ability (L-box), and segregation resistance,
while hardened state testing included: density, compressive and flexural strength, static
modulus of elasticity, water permeability, resistance against freezing in the presence of deicing salt, and SEM analysis. Taking into account the obtained results it can be concluded
that the addition of fly ash has a positive impact on the concrete properties and that the
optimal content of fly ash is 20 % with respect to the total filler mass
PB  - International Institute for the Science of Sintering, Beograd
T2  - Science of Sintering
T1  - Valorization of fly ash from a thermal power plant for producing high-performance self-compacting concrete
VL  - 52
IS  - 3
SP  - 307
EP  - 327
DO  - 10.2298/SOS2003307S
ER  - 

@article{
author = "Savić, Aleksandar R. and Vlahović, Milica and Martinović, Sanja and Đorđević, Nataša G. and Broćeta, Gordana and Volkov Husović, Tatjana",
year = "2020",
abstract = "This study analyzes the feasibility of valorizing industrial by-product, fly ash from a
thermal power plant as a partial replacement of mineral filler-limestone for the production of
self-compacting concrete (SCC). Three types of SCC mixtures with different portions of fly
ash and the reference mixture with limestone were designed. The synthesized SCCs in the
fresh state were examined for density, entrained air content, flowability (Slump flow, Slump
flow time (t500), V-funnel time (tv)), passing ability (L-box), and segregation resistance,
while hardened state testing included: density, compressive and flexural strength, static
modulus of elasticity, water permeability, resistance against freezing in the presence of deicing salt, and SEM analysis. Taking into account the obtained results it can be concluded
that the addition of fly ash has a positive impact on the concrete properties and that the
optimal content of fly ash is 20 % with respect to the total filler mass",
publisher = "International Institute for the Science of Sintering, Beograd",
journal = "Science of Sintering",
title = "Valorization of fly ash from a thermal power plant for producing high-performance self-compacting concrete",
volume = "52",
number = "3",
pages = "307-327",
doi = "10.2298/SOS2003307S"
}

Savić, A. R., Vlahović, M., Martinović, S., Đorđević, N. G., Broćeta, G.,& Volkov Husović, T.. (2020). Valorization of fly ash from a thermal power plant for producing high-performance self-compacting concrete. in Science of Sintering
International Institute for the Science of Sintering, Beograd., 52(3), 307-327.
https://doi.org/10.2298/SOS2003307S

Savić AR, Vlahović M, Martinović S, Đorđević NG, Broćeta G, Volkov Husović T. Valorization of fly ash from a thermal power plant for producing high-performance self-compacting concrete. in Science of Sintering. 2020;52(3):307-327.
doi:10.2298/SOS2003307S .

Savić, Aleksandar R., Vlahović, Milica, Martinović, Sanja, Đorđević, Nataša G., Broćeta, Gordana, Volkov Husović, Tatjana, "Valorization of fly ash from a thermal power plant for producing high-performance self-compacting concrete" in Science of Sintering, 52, no. 3 (2020):307-327,
https://doi.org/10.2298/SOS2003307S . .