Navegando por Autor "Medeiros, F. F. P."

Agora exibindo 1 - 1 de 1

The thermal decomposition of monohydrated ammonium oxotris (oxalate) niobate
(Brazilian Journal of Chemical Engineering, 2006-12) 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
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

SIGAA