Estudo da oxidação total do etanol usando óxidos tipo perovskita LaBO3 (B= Mn, Ni, Fe)

Química Nova

Ana Brígida Soares²  Paulo Roberto Nagipe Da Silva¹  Jair C. C. Freitas¹  Clara Muniz De Almeida¹ 

[1] ,Centro Federal de Educação Tecnológica do Espírito Santo Centro de Ciências e Tecnologias Químicas Vitória ES

关键词: perovskites;    oxidation;    ethanol;   

DOI  :  10.1590/S0100-40422007000500002

来源: SciELO

【 摘 要 】

The present work investigated the effect of coprecipitation-oxidant synthesis on the specific surface area of perovskite-type oxides LaBO3 (B= Mn, Ni, Fe) for total oxidation of ethanol. The perovskite-type oxides were characterized by X-ray diffraction, nitrogen adsorption (BET method), thermogravimetric analysis (TGA-DTA), TPR and X-ray photoelectron spectroscopy (XPS). Through method involving the coprecipitation-oxidant was possible to obtain catalysts with different BET specific surface areas, of 33-51 m²/g. The results of the catalytic test confirmed that all oxides investigated in this work have specific catalytic activity for total oxidation of ethanol, though the temperatures for total conversion change for each transition metal.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License