TY  - JOUR
AU  - Vlasova, M.
AU  - Leon, I.
AU  - Enriquez-Mendez, Yolanda
AU  - Dominguez-Patino, Gloria
AU  - Kakazey, M.
AU  - Dominguez-Patino, Martha
AU  - Nikolić, Maria Vesna
AU  - Ristić, Momčilo M.
PY  - 2007
UR  - https://dais.sanu.ac.rs/123456789/12887
AB  - Semi-quantitative methods of X-ray diffraction and FTIR-spectroscopy, accompanied by electron microscopy, X-ray microanalysis and others were used to monitor structural-phase reorganizations occurring in a smectite-gypsum mixture (bentonite) subjected to NaOH treatment with the subsequent addition of quaternary ammonium salt (TMA) in conditions of water deficiency. The interaction of bentonite with NaOH breaks up large bentonite aggregates, saturates smectite with Na cations, and yields Ca(OH)(2). The addition of TMA is accompanied by its penetration into the interlayer space and adsorption on the surface.
PB  - Oxford : Elsevier Sci
T2  - Ceramics International
T1  - Monitoring of transformations in bentonite after NaOH-TMA treatment
SP  - 405
EP  - 412
VL  - 33
IS  - 3
DO  - 10.1016/j.ceramint.2005.09.024
UR  - https://hdl.handle.net/21.15107/rcub_dais_12887
ER  - 

@article{
author = "Vlasova, M. and Leon, I. and Enriquez-Mendez, Yolanda and Dominguez-Patino, Gloria and Kakazey, M. and Dominguez-Patino, Martha and Nikolić, Maria Vesna and Ristić, Momčilo M.",
year = "2007",
abstract = "Semi-quantitative methods of X-ray diffraction and FTIR-spectroscopy, accompanied by electron microscopy, X-ray microanalysis and others were used to monitor structural-phase reorganizations occurring in a smectite-gypsum mixture (bentonite) subjected to NaOH treatment with the subsequent addition of quaternary ammonium salt (TMA) in conditions of water deficiency. The interaction of bentonite with NaOH breaks up large bentonite aggregates, saturates smectite with Na cations, and yields Ca(OH)(2). The addition of TMA is accompanied by its penetration into the interlayer space and adsorption on the surface.",
publisher = "Oxford : Elsevier Sci",
journal = "Ceramics International",
title = "Monitoring of transformations in bentonite after NaOH-TMA treatment",
pages = "405-412",
volume = "33",
number = "3",
doi = "10.1016/j.ceramint.2005.09.024",
url = "https://hdl.handle.net/21.15107/rcub_dais_12887"
}

Vlasova, M., Leon, I., Enriquez-Mendez, Y., Dominguez-Patino, G., Kakazey, M., Dominguez-Patino, M., Nikolić, M. V.,& Ristić, M. M.. (2007). Monitoring of transformations in bentonite after NaOH-TMA treatment. in Ceramics International
Oxford : Elsevier Sci., 33(3), 405-412.
https://doi.org/10.1016/j.ceramint.2005.09.024
https://hdl.handle.net/21.15107/rcub_dais_12887

Vlasova M, Leon I, Enriquez-Mendez Y, Dominguez-Patino G, Kakazey M, Dominguez-Patino M, Nikolić MV, Ristić MM. Monitoring of transformations in bentonite after NaOH-TMA treatment. in Ceramics International. 2007;33(3):405-412.
doi:10.1016/j.ceramint.2005.09.024
https://hdl.handle.net/21.15107/rcub_dais_12887 .

Vlasova, M., Leon, I., Enriquez-Mendez, Yolanda, Dominguez-Patino, Gloria, Kakazey, M., Dominguez-Patino, Martha, Nikolić, Maria Vesna, Ristić, Momčilo M., "Monitoring of transformations in bentonite after NaOH-TMA treatment" in Ceramics International, 33, no. 3 (2007):405-412,
https://doi.org/10.1016/j.ceramint.2005.09.024 .,
https://hdl.handle.net/21.15107/rcub_dais_12887 .

TY  - JOUR
AU  - Marinković, Zorica
AU  - Milošević, Olivera
AU  - Nikolić, Maria Vesna
AU  - Kakazey, M. G.
AU  - Karpec, M. V.
AU  - Tomila, T. V.
AU  - Ristić, Momčilo M.
PY  - 2004
UR  - https://dais.sanu.ac.rs/123456789/12881
AB  - Freeze-drying, as a cryochemical powder processing method is applied in the synthesis of ZnO submicrometer to narrosized powders. The process involves rapid freezing of the sprayed precursor solution, drying under vacuum by sublimation of the Solvent and salt decomposition to oxide by thermal treatment. Calcination of dehydrated Zn(NO3)(2) was performed through destruction of the primary crystal structure, i.e. through accumulation of different defect complexes and based on this, the formation of a new state of the ZnO crystal lattice. An analysis of the microstructure evolution of zinc oxide particles in the temperature range from 548 to 898 K is described. The research was performed using differential scanning calorimetry (DSC), scanning electron microscopy (SEM), X-ray powder diffraction (XRPD), electronic paramagnetic resonance (EPR) and infrared spectroscopy (IR). It was shown that the least ("primary") coherent scattering region (580 Angstrom) and the most defective state were ZnO obtained at the lowest calcination temperature (T-c = 548 K). Increase of the calcination temperature (T-c > 548 K) favors uniting of eight closest "primary" domains into "secondary" ones. Unification is accompanied by a pronounced increase in microstrainin "secondary" domains, whose size practically does not depend on the calcination temperature in the region 573-898 K.
PB  - Lausanne : Elsevier Science
T2  - Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing
T1  - Evolution of the microstructure of disperse ZnO powders obtained by the freeze-drying method
SP  - 620
EP  - 624
VL  - 375
DO  - 10.1016/j.msea.2003.10.113
UR  - https://hdl.handle.net/21.15107/rcub_dais_12881
ER  - 

@article{
author = "Marinković, Zorica and Milošević, Olivera and Nikolić, Maria Vesna and Kakazey, M. G. and Karpec, M. V. and Tomila, T. V. and Ristić, Momčilo M.",
year = "2004",
abstract = "Freeze-drying, as a cryochemical powder processing method is applied in the synthesis of ZnO submicrometer to narrosized powders. The process involves rapid freezing of the sprayed precursor solution, drying under vacuum by sublimation of the Solvent and salt decomposition to oxide by thermal treatment. Calcination of dehydrated Zn(NO3)(2) was performed through destruction of the primary crystal structure, i.e. through accumulation of different defect complexes and based on this, the formation of a new state of the ZnO crystal lattice. An analysis of the microstructure evolution of zinc oxide particles in the temperature range from 548 to 898 K is described. The research was performed using differential scanning calorimetry (DSC), scanning electron microscopy (SEM), X-ray powder diffraction (XRPD), electronic paramagnetic resonance (EPR) and infrared spectroscopy (IR). It was shown that the least ("primary") coherent scattering region (580 Angstrom) and the most defective state were ZnO obtained at the lowest calcination temperature (T-c = 548 K). Increase of the calcination temperature (T-c > 548 K) favors uniting of eight closest "primary" domains into "secondary" ones. Unification is accompanied by a pronounced increase in microstrainin "secondary" domains, whose size practically does not depend on the calcination temperature in the region 573-898 K.",
publisher = "Lausanne : Elsevier Science",
journal = "Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing",
title = "Evolution of the microstructure of disperse ZnO powders obtained by the freeze-drying method",
pages = "620-624",
volume = "375",
doi = "10.1016/j.msea.2003.10.113",
url = "https://hdl.handle.net/21.15107/rcub_dais_12881"
}

Marinković, Z., Milošević, O., Nikolić, M. V., Kakazey, M. G., Karpec, M. V., Tomila, T. V.,& Ristić, M. M.. (2004). Evolution of the microstructure of disperse ZnO powders obtained by the freeze-drying method. in Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing
Lausanne : Elsevier Science., 375, 620-624.
https://doi.org/10.1016/j.msea.2003.10.113
https://hdl.handle.net/21.15107/rcub_dais_12881

Marinković Z, Milošević O, Nikolić MV, Kakazey MG, Karpec MV, Tomila TV, Ristić MM. Evolution of the microstructure of disperse ZnO powders obtained by the freeze-drying method. in Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing. 2004;375:620-624.
doi:10.1016/j.msea.2003.10.113
https://hdl.handle.net/21.15107/rcub_dais_12881 .

Marinković, Zorica, Milošević, Olivera, Nikolić, Maria Vesna, Kakazey, M. G., Karpec, M. V., Tomila, T. V., Ristić, Momčilo M., "Evolution of the microstructure of disperse ZnO powders obtained by the freeze-drying method" in Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 375 (2004):620-624,
https://doi.org/10.1016/j.msea.2003.10.113 .,
https://hdl.handle.net/21.15107/rcub_dais_12881 .