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

Química Nova

Habitzheuter, Filipe¹  Universidade de São Paulo, São Carlos, Brasil¹  Assaf, Elisabete Moreira¹  Universidade Federal do Espírito Santo, Alegre, Brasil¹  Profeti, Luciene Paula Roberto¹ 

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 performance of Ni/ZrO2 catalysts loaded with different lanthanum content for steam reforming of ethanol was investigated. Catalysts were characterized by BET surface area, X-ray diffraction, UV-vis spectroscopy, temperature programmed reduction, and X-ray absorption fine structure techniques. Results showed that lanthanum addition led to an increase in the degree of reduction of both NiO and nickel surface species interacting with the support, due to the higher dispersion effect. The best catalytic performance at 450 ÂºC was found for the Ni/12LZ catalyst, which exhibited an effluent gaseous mixture with the highest H2 yield.

【 授权许可】

Unknown