Synthesis of spinel powders by the spray pyrolysis method
No Thumbnail
Authors
Janaćković, ĐorđeJokanović, Vukoman
Kostić-Gvozdenović, Ljiljana
Cirjaković, R.
Petrović-Prelević, Irena
Uskoković, Dragan
Article (Published version)
Metadata
Show full item recordAbstract
In this paper synthesis of spinel powders by the two-fluid spray pyrolysis method was performed. The influence of the precursors (AlCl3·9H2O and MgCl2·6H2O for S-1 powder and boehmite sol and MgCl2·6H2O for S-2 powder) on the spinel synthesis, particle morphology and phase transformation was investigated using SEM, X-ray and DT/TG analyses. From the obtained results its evident that precursors have a great influence on the particles morphology: Particles obtained from the salt solution (S-1) were hollow as a consequence of surface precipitation, while particles obtained from the sol were solid spheres due to continual boehmite gel formation. From the DT, TG, and X-ray diffraction analyses of spinel powders can be concluded that formation of spinel phase is evident in both samples heated at the temperature below 500°C during 2 hours. In the case of S-1 powder heated at 1000°C synthesis of spinel is completed, while in the case of S-2, presence of periclas diffraction peaks indicates tha...t the reaction of spinel phase synthesis is not finished. Existence of periclas phase is a consequence of phase separation during synthesis due to presence of discrete boehmite particles as a precursor.
Keywords:
Morphology / Spinel / Spray pyrolysis / SynthesisSource:
Key Engineering Materials, 1997, 132-136, 197-200Publisher:
- Trans Tech Publications Ltd, Durnten-Zurich
DOI: 10.4028/www.scientific.net/KEM.132-136.197
ISSN: 1013-9826
PubMed:
Scopus: 2-s2.0-4243983752
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Janaćković, Đorđe AU - Jokanović, Vukoman AU - Kostić-Gvozdenović, Ljiljana AU - Cirjaković, R. AU - Petrović-Prelević, Irena AU - Uskoković, Dragan PY - 1997 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/117 AB - In this paper synthesis of spinel powders by the two-fluid spray pyrolysis method was performed. The influence of the precursors (AlCl3·9H2O and MgCl2·6H2O for S-1 powder and boehmite sol and MgCl2·6H2O for S-2 powder) on the spinel synthesis, particle morphology and phase transformation was investigated using SEM, X-ray and DT/TG analyses. From the obtained results its evident that precursors have a great influence on the particles morphology: Particles obtained from the salt solution (S-1) were hollow as a consequence of surface precipitation, while particles obtained from the sol were solid spheres due to continual boehmite gel formation. From the DT, TG, and X-ray diffraction analyses of spinel powders can be concluded that formation of spinel phase is evident in both samples heated at the temperature below 500°C during 2 hours. In the case of S-1 powder heated at 1000°C synthesis of spinel is completed, while in the case of S-2, presence of periclas diffraction peaks indicates that the reaction of spinel phase synthesis is not finished. Existence of periclas phase is a consequence of phase separation during synthesis due to presence of discrete boehmite particles as a precursor. PB - Trans Tech Publications Ltd, Durnten-Zurich T2 - Key Engineering Materials T1 - Synthesis of spinel powders by the spray pyrolysis method EP - 200 SP - 197 VL - 132-136 DO - 10.4028/www.scientific.net/KEM.132-136.197 UR - https://hdl.handle.net/21.15107/rcub_technorep_117 ER -
@article{ author = "Janaćković, Đorđe and Jokanović, Vukoman and Kostić-Gvozdenović, Ljiljana and Cirjaković, R. and Petrović-Prelević, Irena and Uskoković, Dragan", year = "1997", abstract = "In this paper synthesis of spinel powders by the two-fluid spray pyrolysis method was performed. The influence of the precursors (AlCl3·9H2O and MgCl2·6H2O for S-1 powder and boehmite sol and MgCl2·6H2O for S-2 powder) on the spinel synthesis, particle morphology and phase transformation was investigated using SEM, X-ray and DT/TG analyses. From the obtained results its evident that precursors have a great influence on the particles morphology: Particles obtained from the salt solution (S-1) were hollow as a consequence of surface precipitation, while particles obtained from the sol were solid spheres due to continual boehmite gel formation. From the DT, TG, and X-ray diffraction analyses of spinel powders can be concluded that formation of spinel phase is evident in both samples heated at the temperature below 500°C during 2 hours. In the case of S-1 powder heated at 1000°C synthesis of spinel is completed, while in the case of S-2, presence of periclas diffraction peaks indicates that the reaction of spinel phase synthesis is not finished. Existence of periclas phase is a consequence of phase separation during synthesis due to presence of discrete boehmite particles as a precursor.", publisher = "Trans Tech Publications Ltd, Durnten-Zurich", journal = "Key Engineering Materials", title = "Synthesis of spinel powders by the spray pyrolysis method", pages = "200-197", volume = "132-136", doi = "10.4028/www.scientific.net/KEM.132-136.197", url = "https://hdl.handle.net/21.15107/rcub_technorep_117" }
Janaćković, Đ., Jokanović, V., Kostić-Gvozdenović, L., Cirjaković, R., Petrović-Prelević, I.,& Uskoković, D.. (1997). Synthesis of spinel powders by the spray pyrolysis method. in Key Engineering Materials Trans Tech Publications Ltd, Durnten-Zurich., 132-136, 197-200. https://doi.org/10.4028/www.scientific.net/KEM.132-136.197 https://hdl.handle.net/21.15107/rcub_technorep_117
Janaćković Đ, Jokanović V, Kostić-Gvozdenović L, Cirjaković R, Petrović-Prelević I, Uskoković D. Synthesis of spinel powders by the spray pyrolysis method. in Key Engineering Materials. 1997;132-136:197-200. doi:10.4028/www.scientific.net/KEM.132-136.197 https://hdl.handle.net/21.15107/rcub_technorep_117 .
Janaćković, Đorđe, Jokanović, Vukoman, Kostić-Gvozdenović, Ljiljana, Cirjaković, R., Petrović-Prelević, Irena, Uskoković, Dragan, "Synthesis of spinel powders by the spray pyrolysis method" in Key Engineering Materials, 132-136 (1997):197-200, https://doi.org/10.4028/www.scientific.net/KEM.132-136.197 ., https://hdl.handle.net/21.15107/rcub_technorep_117 .