GOUVEIA, D.S.ROSENHAIM, R.CHAVES, A.C.GUEDES LIMA, S.J.PASKOCIMAS, C.A.LONGO, E.SOUZA, A.G.SANTOS, I.M.G.2014-11-172014-11-182015-04-022014-11-172014-11-182015-04-02GOUVEIA, 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. <b>Proceedings...</b> Disponível em: http://repositorio.ipen.br/handle/123456789/15549.http://repositorio.ipen.br/handle/123456789/15549Oxides 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.openAccessspinelszincantimonyoxidessinteringstoichiometrypyrolysiscobaltspectroscopyTexto completo de evento