Voltar
Artigo Acesso aberto Produção Nacional Revisado por pares
BIBTEX RIS

Estudo da adsorção de surfactante catiônico na matriz inorgânica fosfato de nióbio hidratado

2009; Brazilian Chemical Society; Volume: 32; Issue: 1 Linguagem: Inglês

10.1590/s0100-40422009000100002

ISSN

1678-7064

Autores

Paulo Pereira, M. Silva,

Tópico(s)

Chemical Synthesis and Characterization

Resumo

THE SURFACTANT IN INORGANICS MATRICES. This work describes the study the adsorption of a cationic surfactant, cetyl trimethyl ammonium bromide (CTAB) in the hydrous niobium phosphate matrix.The matrix was characterized by powder X-ray diffraction (DRX), thermal analysis (TG), differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and surface area measurements (BET).The Langmuir and Freundlich isothermal models were used in the CTAB adsorption study.The adsorption process wasn`t favorable for the NbOPO 4 .nH 2 O in both studied models.

Referência(s)