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- Title
EFEITO DO MÉTODO DE COMPLEXAÇÃO COMBINANDO EDTA - CITRATO E COPRECIPITAÇÃO EM MEIO OXALATO NA SÍNTESE DA SrCo<sub>0,8</sub>Fe<sub>0,2</sub>O<sub>3-δ</sub>.
- Authors
SANTOS, A. G.; COSTA, I. K. F.; SANTOS, F. K. G.; SOUZA, C. P.
- Abstract
This work focuses on the coprecipitation synthesis method for preparation of ceramic materials with perovskite structure and characterization, developing a methodological alternative route of synthesis from the middle via oxalate coprecipitation material SrCo0,8Fe0,2O3-δ. In order to check the influence of this method, it was also synthesized using a combined citrate - EDTA complexing method. Both methods led to post-phase synthesis. The synthesis based on the method via oxalate coprecipitation among particles led to the crystalline phase as those obtained using a combined citrate - EDTA complexing method under the same conditions of heat treatment. The nature of the reagent used via oxalate coprecipitation method produced a material with approximately 80 % lower than the average size of crystallites. Moreover, the via oxalate coprecipitation method precursors obtained in the solid state at low temperature (26°C), shorter synthesis, greater thermal stability and a higher yield of around 90-95 %, maintaining the same order of magnitude the crystallite size that the combined citrate - EDTA complexing method.
- Publication
HOLOS, 2015, Vol 31, Issue 3, p30
- ISSN
1807-1600
- Publication type
Article
- DOI
10.15628/holos.2015.2160