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

Quimica nova

Soares, Ana Brígida¹  Silva, Paulo Roberto Nagipe da²  Freitas, Jair C. C.²  Almeida, Clara Muniz de³ 

[1] Centro Federal de Educação Tecnológica do Espírito Santo, Vitória;Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, Brasil;Universidade Federal do Espírito Santo, Vitória, Brasil

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

【 授权许可】

CC BY