Study of total oxidation of ethanol using the perovskite-type oxides LaBO3 (B= Mn, Ni, Fe)

Química Nova

Almeida, Clara Muniz de¹  Soares, Ana Brígida¹  Universidade Federal do Espírito Santo, Vitória, Brasil¹  Centro Federal de Educação Tecnológica do Espírito Santo, Vitória¹  Silva, Paulo Roberto Nagipe da¹  Freitas, Jair C. C.¹  Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro, Brasil¹  Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, Brasil¹ 

关键词: perovskites;    oxidation;    ethanol.;   

DOI  :  10.1590/S0100-40422007000500002

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 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】

Unknown