The thermal decomposition of monohydrated ammonium oxotris (oxalate) niobate

Author Medeiros, F. F. P.; Moura, Maria de Fátima Vitória de; Silva, A. G. P. da; Souza, Carlson Pereira de; Gomes, K. K. P.; Gomes, Uílame Umbelino Gomes
Publisher

Brazilian Journal of Chemical Engineering

Date

2006-12

Keywords

Thermal decomposition

Thermal analysis

Infrared

Niobium complex

Citation
Abstract

The thermal decomposition in argon of the monohydrated ammonium tris(oxalate)niobate, (NH4)3NbO(C2O4)3.H 2O, has been studied by TG/DTG, DTA, DSC, IR absorption and XRD. The material decomposes stepwise by the release of CO, CO2, NH3 and water. The atomic structure of the complex initially becomes amorphous and then crystallizes twice in the form of orthorhombic and monoclinic niobium pentoxide

URIhttps://repositorio.ufrn.br/handle/123456789/32812
CollectionsCT - DEQ - Artigos publicados em periódicos