TY  - CONF
AU  - Vasić, Milica
AU  - Radovanović, Lidija
AU  - Radojević, Zagorka
PY  - 2023
UR  - http://rims.institutims.rs/handle/123456789/730
AB  - The study makes a unique effort to characterize all the necessary characteristics of refractory clays and products fired at temperatures between 1100 and 1300 °C on a laboratory level. For 19 composite samples from the recently opened reservoir, thorough instrumental and ceramic-technological data are presented. The potential for using Serbian raw refractory clays from the recently discovered deposit is investigated. The composites had a variety of qualities and varied in composition, but they were majorly composed of kaolinite and illite and had a significant share of fluxes. The samples had high quantities of clay minerals and organic matter, which is seen as the most intense mass loss in the 400–600 °C range. Low-duty and high-duty refractories could be distinguished by their refractoriness over 1581 °C. This parameter was mostly influenced by the content of alumina and kaolinite within the materials. Hydraulically-pressed ceramic tiles, following firing stage showed water absorption was between 9.02–1.42 % and and modulus of rupture of 16.5 – 53.6 MPa. Color is determined by spectrophotometer and correlated to the composition of the initial clay and fired products. For the lining of ceramic and glass furnaces, the majority of these clays can be employed as natural refractory materials. Some of the samples' organic content has a detrimental effect on the fast-firing procedure, since the occurrence of the entrapped air (bloating).
C3  - 5th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2023, Trebinje, BIH
T1  - Raw kaolinitic-illitic clays for the production of refractory ceramics
EP  - 22
SP  - 17
UR  - https://hdl.handle.net/21.15107/rcub_rims_730
ER  - 

@conference{
author = "Vasić, Milica and Radovanović, Lidija and Radojević, Zagorka",
year = "2023",
abstract = "The study makes a unique effort to characterize all the necessary characteristics of refractory clays and products fired at temperatures between 1100 and 1300 °C on a laboratory level. For 19 composite samples from the recently opened reservoir, thorough instrumental and ceramic-technological data are presented. The potential for using Serbian raw refractory clays from the recently discovered deposit is investigated. The composites had a variety of qualities and varied in composition, but they were majorly composed of kaolinite and illite and had a significant share of fluxes. The samples had high quantities of clay minerals and organic matter, which is seen as the most intense mass loss in the 400–600 °C range. Low-duty and high-duty refractories could be distinguished by their refractoriness over 1581 °C. This parameter was mostly influenced by the content of alumina and kaolinite within the materials. Hydraulically-pressed ceramic tiles, following firing stage showed water absorption was between 9.02–1.42 % and and modulus of rupture of 16.5 – 53.6 MPa. Color is determined by spectrophotometer and correlated to the composition of the initial clay and fired products. For the lining of ceramic and glass furnaces, the majority of these clays can be employed as natural refractory materials. Some of the samples' organic content has a detrimental effect on the fast-firing procedure, since the occurrence of the entrapped air (bloating).",
journal = "5th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2023, Trebinje, BIH",
title = "Raw kaolinitic-illitic clays for the production of refractory ceramics",
pages = "22-17",
url = "https://hdl.handle.net/21.15107/rcub_rims_730"
}

Vasić, M., Radovanović, L.,& Radojević, Z.. (2023). Raw kaolinitic-illitic clays for the production of refractory ceramics. in 5th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2023, Trebinje, BIH, 17-22.
https://hdl.handle.net/21.15107/rcub_rims_730

Vasić M, Radovanović L, Radojević Z. Raw kaolinitic-illitic clays for the production of refractory ceramics. in 5th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2023, Trebinje, BIH. 2023;:17-22.
https://hdl.handle.net/21.15107/rcub_rims_730 .

Vasić, Milica, Radovanović, Lidija, Radojević, Zagorka, "Raw kaolinitic-illitic clays for the production of refractory ceramics" in 5th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2023, Trebinje, BIH (2023):17-22,
https://hdl.handle.net/21.15107/rcub_rims_730 .

TY  - CONF
AU  - Radovanović, Lidija
AU  - Radovanović, Željko
AU  - Kremenović, Aleksandar
AU  - Simović, Bojana
AU  - Vasić, Milica
AU  - Rogan, Jelena
PY  - 2022
UR  - http://rims.institutims.rs/handle/123456789/691
AB  - In recent years, thermal decomposition studies of transition metal complexes with
benzenepolycarboxylate ligands have become an area of a great importance due to the possibility of
obtaining useful metal oxides with desirable electrical, magnetic and catalytic properties [1]. As a
contrast to conventional methods for the preparation of metal oxides, such as hydrothermal or sol–
gel treatment, thermolysis is faster, more efficient and environmentally friendly. Mn(II)–dipya
(dipya = 2,2’-dipyridylamine) complex with tetraanion of 1,2,4,5-benzenetetracarboxylic
(pyromellitic, H4pyr) acid, [Mn2(dipya)2(pyr)(H2O)2], has been prepared and characterized by
elemental, spectral and microscopy analyses. Direct thermolysis of the complex up to 1200 °C in an
air atmosphere yielded spinel Mn3O4 oxide material. The obtained Mn3O4 has been characterized
for its structural, spectroscopic, morphological and optical properties. The possibilities of using this
oxide as photocatalyst or co-photocatalyst for removing textile organic dyes, as well as inorganic
pigmentary material, were also investigated and discussed.
PB  - University in Banjaluka, Faculty of Technology
C3  - XIV CONFERENCE OF CHEMISTS, TECHNOLOGISTS AND ENVIRONMENTALISTS OF REPUBLIC OF SRPSKA, ACADEMY OF SCIENCES AND ARTS OF THE REPUBLIC OF SRPSKA, BANJA LUKA
T1  - Manganese-pyromellitate complex as a precursor for preparation of spinel Mn3O4
SP  - 192
UR  - https://hdl.handle.net/21.15107/rcub_rims_691
ER  - 

@conference{
author = "Radovanović, Lidija and Radovanović, Željko and Kremenović, Aleksandar and Simović, Bojana and Vasić, Milica and Rogan, Jelena",
year = "2022",
abstract = "In recent years, thermal decomposition studies of transition metal complexes with
benzenepolycarboxylate ligands have become an area of a great importance due to the possibility of
obtaining useful metal oxides with desirable electrical, magnetic and catalytic properties [1]. As a
contrast to conventional methods for the preparation of metal oxides, such as hydrothermal or sol–
gel treatment, thermolysis is faster, more efficient and environmentally friendly. Mn(II)–dipya
(dipya = 2,2’-dipyridylamine) complex with tetraanion of 1,2,4,5-benzenetetracarboxylic
(pyromellitic, H4pyr) acid, [Mn2(dipya)2(pyr)(H2O)2], has been prepared and characterized by
elemental, spectral and microscopy analyses. Direct thermolysis of the complex up to 1200 °C in an
air atmosphere yielded spinel Mn3O4 oxide material. The obtained Mn3O4 has been characterized
for its structural, spectroscopic, morphological and optical properties. The possibilities of using this
oxide as photocatalyst or co-photocatalyst for removing textile organic dyes, as well as inorganic
pigmentary material, were also investigated and discussed.",
publisher = "University in Banjaluka, Faculty of Technology",
journal = "XIV CONFERENCE OF CHEMISTS, TECHNOLOGISTS AND ENVIRONMENTALISTS OF REPUBLIC OF SRPSKA, ACADEMY OF SCIENCES AND ARTS OF THE REPUBLIC OF SRPSKA, BANJA LUKA",
title = "Manganese-pyromellitate complex as a precursor for preparation of spinel Mn3O4",
pages = "192",
url = "https://hdl.handle.net/21.15107/rcub_rims_691"
}

Radovanović, L., Radovanović, Ž., Kremenović, A., Simović, B., Vasić, M.,& Rogan, J.. (2022). Manganese-pyromellitate complex as a precursor for preparation of spinel Mn3O4. in XIV CONFERENCE OF CHEMISTS, TECHNOLOGISTS AND ENVIRONMENTALISTS OF REPUBLIC OF SRPSKA, ACADEMY OF SCIENCES AND ARTS OF THE REPUBLIC OF SRPSKA, BANJA LUKA
University in Banjaluka, Faculty of Technology., 192.
https://hdl.handle.net/21.15107/rcub_rims_691

Radovanović L, Radovanović Ž, Kremenović A, Simović B, Vasić M, Rogan J. Manganese-pyromellitate complex as a precursor for preparation of spinel Mn3O4. in XIV CONFERENCE OF CHEMISTS, TECHNOLOGISTS AND ENVIRONMENTALISTS OF REPUBLIC OF SRPSKA, ACADEMY OF SCIENCES AND ARTS OF THE REPUBLIC OF SRPSKA, BANJA LUKA. 2022;:192.
https://hdl.handle.net/21.15107/rcub_rims_691 .

Radovanović, Lidija, Radovanović, Željko, Kremenović, Aleksandar, Simović, Bojana, Vasić, Milica, Rogan, Jelena, "Manganese-pyromellitate complex as a precursor for preparation of spinel Mn3O4" in XIV CONFERENCE OF CHEMISTS, TECHNOLOGISTS AND ENVIRONMENTALISTS OF REPUBLIC OF SRPSKA, ACADEMY OF SCIENCES AND ARTS OF THE REPUBLIC OF SRPSKA, BANJA LUKA (2022):192,
https://hdl.handle.net/21.15107/rcub_rims_691 .

TY  - JOUR
AU  - Radovanović, Lidija
AU  - Radovanović, Željko
AU  - Simović, Bojana
AU  - Vasić, Milica
AU  - Balanč, Bojana
AU  - Dapčević, Aleksandra
AU  - Rogan, Jelena
PY  - 2022
UR  - http://rims.institutims.rs/handle/123456789/447
AB  - A biphasic [Mn(dipya)(H2O)4](tpht)/{[Zn(dipya)(tpht)]·H2O}n complex material, I, (dipya = 2,2’-dipyridylamine, tpht2– = dianion of terephthalatic acid) was synthesized by ligand exchange reaction and characterized by XRPD and FTIR spectroscopy. A ZnO/ZnMn2O4 composite, II, has been prepared via thermal decomposition of precursor I in an air atmosphere at 450 °C. XRPD, FTIR and FESEM analyses of II revealed the simultaneous presence of spherical nanoparticles of wurtzite ZnO and elongated nanoparticles of spinel ZnMn2O4. The specific surface area of II was determined by the BET method, whereas the volume and average size of the mesopores were calculated in accordance with the BJH method. The measurements of the mean size, polydispersity index and zeta potential showed colloidal instability of II. Two band gap values of 2.4 and 3.3 eV were determined using UV–Vis diffuse reflectance spectroscopy, while the measurements of photoluminescence revealed that II is active in the blue region of the visible spectrum. Testing of composite II as a pigmentary material showed that it can be used for the colouring of a ceramic glaze.
T2  - Journal of the Serbian Chemical Society - JSCS
T1  - Structure and properties of ZnO/ZnMn2O4 composite obtained by thermal decomposition of terephthalate precursor
DO  - 10.2298/JSC221102090R
ER  - 

@article{
author = "Radovanović, Lidija and Radovanović, Željko and Simović, Bojana and Vasić, Milica and Balanč, Bojana and Dapčević, Aleksandra and Rogan, Jelena",
year = "2022",
abstract = "A biphasic [Mn(dipya)(H2O)4](tpht)/{[Zn(dipya)(tpht)]·H2O}n complex material, I, (dipya = 2,2’-dipyridylamine, tpht2– = dianion of terephthalatic acid) was synthesized by ligand exchange reaction and characterized by XRPD and FTIR spectroscopy. A ZnO/ZnMn2O4 composite, II, has been prepared via thermal decomposition of precursor I in an air atmosphere at 450 °C. XRPD, FTIR and FESEM analyses of II revealed the simultaneous presence of spherical nanoparticles of wurtzite ZnO and elongated nanoparticles of spinel ZnMn2O4. The specific surface area of II was determined by the BET method, whereas the volume and average size of the mesopores were calculated in accordance with the BJH method. The measurements of the mean size, polydispersity index and zeta potential showed colloidal instability of II. Two band gap values of 2.4 and 3.3 eV were determined using UV–Vis diffuse reflectance spectroscopy, while the measurements of photoluminescence revealed that II is active in the blue region of the visible spectrum. Testing of composite II as a pigmentary material showed that it can be used for the colouring of a ceramic glaze.",
journal = "Journal of the Serbian Chemical Society - JSCS",
title = "Structure and properties of ZnO/ZnMn2O4 composite obtained by thermal decomposition of terephthalate precursor",
doi = "10.2298/JSC221102090R"
}

Radovanović, L., Radovanović, Ž., Simović, B., Vasić, M., Balanč, B., Dapčević, A.,& Rogan, J.. (2022). Structure and properties of ZnO/ZnMn2O4 composite obtained by thermal decomposition of terephthalate precursor. in Journal of the Serbian Chemical Society - JSCS.
https://doi.org/10.2298/JSC221102090R

Radovanović L, Radovanović Ž, Simović B, Vasić M, Balanč B, Dapčević A, Rogan J. Structure and properties of ZnO/ZnMn2O4 composite obtained by thermal decomposition of terephthalate precursor. in Journal of the Serbian Chemical Society - JSCS. 2022;.
doi:10.2298/JSC221102090R .

Radovanović, Lidija, Radovanović, Željko, Simović, Bojana, Vasić, Milica, Balanč, Bojana, Dapčević, Aleksandra, Rogan, Jelena, "Structure and properties of ZnO/ZnMn2O4 composite obtained by thermal decomposition of terephthalate precursor" in Journal of the Serbian Chemical Society - JSCS (2022),
https://doi.org/10.2298/JSC221102090R . .

TY  - JOUR
AU  - Vasić, Milica
AU  - Radovanović, Lidija
AU  - Pezo, Lato
AU  - Radojević, Zagorka
PY  - 2022
UR  - http://rims.institutims.rs/handle/123456789/446
AB  - The usage possibility of 19 composites of raw refractory clays from Serbia containing approximately 53.29% of SiO2 and 26.73% of Al2O3 is presented. The sum of fluxing oxides was 57.74%, while these materials contained 32% of quartz, 29% of kaolinite and 26% of illite–mica. Dilatometry tests revealed a sudden shrinkage with the peak at approximately 1115 °C, owing to the formation of mullite. The refractoriness was in the range of 1581–1718 °C, which classifies the composites from low- to high-duty refractories. Based on correlation analysis, the refractoriness mostly depended on the content of alumina. The lightness of the fired test pieces was lower after firing when compared to the dry samples, and it decreased with the firing temperature from reddish to grayish. The study presents a novel attempt to define all the necessary properties of raw refractory clays and products fired at the 1100–1300 °C range on a laboratory level. Most of these clays can be used as natural refractory materials for ceramic and glass furnace lining. The organic matter in some of the samples influences negatively the fast-firing process.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Raw kaolinitic–illitic clays as high‑mechanical‑performance hydraulically pressed refractories
VL  - 147
DO  - 10.1007/s10973-022-11848-w
ER  - 

@article{
author = "Vasić, Milica and Radovanović, Lidija and Pezo, Lato and Radojević, Zagorka",
year = "2022",
abstract = "The usage possibility of 19 composites of raw refractory clays from Serbia containing approximately 53.29% of SiO2 and 26.73% of Al2O3 is presented. The sum of fluxing oxides was 57.74%, while these materials contained 32% of quartz, 29% of kaolinite and 26% of illite–mica. Dilatometry tests revealed a sudden shrinkage with the peak at approximately 1115 °C, owing to the formation of mullite. The refractoriness was in the range of 1581–1718 °C, which classifies the composites from low- to high-duty refractories. Based on correlation analysis, the refractoriness mostly depended on the content of alumina. The lightness of the fired test pieces was lower after firing when compared to the dry samples, and it decreased with the firing temperature from reddish to grayish. The study presents a novel attempt to define all the necessary properties of raw refractory clays and products fired at the 1100–1300 °C range on a laboratory level. Most of these clays can be used as natural refractory materials for ceramic and glass furnace lining. The organic matter in some of the samples influences negatively the fast-firing process.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Raw kaolinitic–illitic clays as high‑mechanical‑performance hydraulically pressed refractories",
volume = "147",
doi = "10.1007/s10973-022-11848-w"
}

Vasić, M., Radovanović, L., Pezo, L.,& Radojević, Z.. (2022). Raw kaolinitic–illitic clays as high‑mechanical‑performance hydraulically pressed refractories. in Journal of Thermal Analysis and Calorimetry, 147.
https://doi.org/10.1007/s10973-022-11848-w

Vasić M, Radovanović L, Pezo L, Radojević Z. Raw kaolinitic–illitic clays as high‑mechanical‑performance hydraulically pressed refractories. in Journal of Thermal Analysis and Calorimetry. 2022;147.
doi:10.1007/s10973-022-11848-w .

Vasić, Milica, Radovanović, Lidija, Pezo, Lato, Radojević, Zagorka, "Raw kaolinitic–illitic clays as high‑mechanical‑performance hydraulically pressed refractories" in Journal of Thermal Analysis and Calorimetry, 147 (2022),
https://doi.org/10.1007/s10973-022-11848-w . .