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BIBTEX RIS

Efeito de microondas na estrutura cristalina e na atividade catalítica de argilas

2008; Brazilian Chemical Society; Volume: 31; Issue: 3 Linguagem: Inglês

10.1590/s0100-40422008000300019

ISSN

1678-7064

Autores

Ângelo C. Pinto, Cristiano Honório de Oliveira, Núbia Moura Ribeiro,

Tópico(s)

Clay minerals and soil interactions

Resumo

OF CLAYS.The effect of microwave (MW) irradiation on the crystalline structure of two natural clays and one commercial clay, Montmorillonite K10, was analyzed comparing the X-ray diffraction, N 2 isotherms, NMR-MAS of 27 Al and 29 Si spectra of the clays before and after MW irradiation.The preparation of dioxolane ketals of isatin was used to analyze the MW effect on the catalyst activation.The yields achieved using catalysts activated by MW irradiation were lower (2 to 5%) than the yields achieved using catalysts activated by heat in a conventional oven.

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