Effects of adding lanthanum to Ni/ZrO2 catalysts on ethanol steam reforming

Quimica nova

Profeti, Luciene Paula Roberto¹  Habitzheuter, Filipe²  Assaf, Elisabete Moreira² 

[1] Universidade Federal do Espírito Santo, Alegre, Brasil;Universidade de São Paulo, São Carlos, Brasil

关键词: ethanol steam reforming;    hydrogen;    nickel catalysts.;   

DOI  :  10.1590/S0100-40422012000300013

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The catalytic performanceof Ni/ZrO2 catalysts loaded with different lanthanum content forsteam reforming of ethanol was investigated. Catalysts were characterized byBET surface area, X-ray diffraction, UV-vis spectroscopy, temperature programmedreduction, and X-ray absorption fine structure techniques. Results showed thatlanthanum addition led to an increase in the degree of reduction of both NiOand nickel surface species interacting with the support, due to the higher dispersioneffect. The best catalytic performance at 450 ºC was found for the Ni/12LZcatalyst, which exhibited an effluent gaseous mixture with the highest H2yield.

【 授权许可】

CC BY