Characterization of Cosub(x)Znsub(7-x)Sbsub(2)Osub(12) spinel obtained by pechini method
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2003
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INTERNATIONAL LATIN-AMERICAN CONFERENCE ON POWDER TECHNOLOGY, 4th
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Oxides with spinel structure have been studied for many decades. The reason is a wide
variety of application as pigments, refractories and also as a model structure to studies
that evaluate the relative stability of ions in octahedral and tetrahedral sites. Zincantimonium spinels (Zn7Sb2012) were synthesized by Pechini method, substituting the
cation Zn2+by Coe+, according to the stoichiometry Co xZn7_,Sb2O17 (x = 0 — 7).
Thermal characterization of the powders, after pyrolysis, was done using TG/DTA
analysis, being observed different mass losses, according to the cobalt amount in the
resin. Powders were calcined at 600 to 1000 °C and characterized by XRD, BET and IV
spectroscopy. Maximum cristalinity was obtained at 1000 °C. Materials with x = 5 — 7
presented a secondary phase (Co, Zn)Sb206. Using infrared analysis, the possible sites
were Zn2+ , Co2+and Sb2+are located in the net were inferred.
Como referenciar
GOUVEIA, D.S.; ROSENHAIM, R.; CHAVES, A.C.; GUEDES LIMA, S.J.; PASKOCIMAS, C.A.; LONGO, E.; SOUZA, A.G.; SANTOS, I.M.G. Characterization of Cosub(x)Znsub(7-x)Sbsub(2)Osub(12) spinel obtained by pechini method. In: INTERNATIONAL LATIN-AMERICAN CONFERENCE ON POWDER TECHNOLOGY, 4th, Nov. 19-21, 2003, Guaruja, SP. Proceedings... Disponível em: http://repositorio.ipen.br/handle/123456789/15549. Acesso em: 20 Mar 2026.
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