RemoÃÃo de compostos nitrogenados utilizando diferentes suportes impregnados com estanho / Removal of nitrogenated compound utilizing different supports empregnated with tin.
AUTOR(ES)
Fabiane de Oliveira CantÃo Fonseca
DATA DE PUBLICAÇÃO
2009
RESUMO
The present work is made up of three chapters that had as a main objective, the preparation of niobim oxide catalysts (Nb2O5) and activated carbon (AC), both impregnated with 1, 5 and 10% of tin in mass. The first chapter presents a bibliographical review on the catalytic processes, catalysts, tin and its applications, environmental pollution, and adsorption and oxidative processes. In the second part of the work, Sn0/Nb2O5 composites were prepared (1, 5 and 10% in mass). These composites were characterized by temperature programmed reduction (TPR), X Ray Diffraction (XRD), scanning electronic microscopy (SEM), infrared spectroscopy (FTIR) and X Ray Photoelectron Spectroscopy (XPS). After the characterization phase, adsorption and oxidation tests of the organic composition were done: methylene blue (MB) and quinoline (QN). In the third part of the work, Sn0/CA composites were prepared (1, 5 and 10% in mass); these materials were characterized by temperature programmed reduction (TPR), X Ray Diffraction (XRD), scanning electronic microscopy (SEM), MÃssbauer spectroscopy and specific surface area (BET). The results revealed that the Sn0/Nb2O5 and Sn0/CA composites presented good adsorption and oxidation capacity of the organic compounds: MB and QN.
ASSUNTO(S)
quimica tin, adsorption, oxidation, methylene blue, quinoline 1. estanho. 2. adsorÃÃo. 3. oxidaÃÃo. 4. azul de metileno. 5. quinolina
ACESSO AO ARTIGO
http://bibtede.ufla.br/tede//tde_busca/arquivo.php?codArquivo=2036Documentos Relacionados
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