Effect of metal load in Co/Al2o3 catalysts for ethanol steam reforming

Química Nova

Santos, Rudye K. S.¹  Assaf, Elisabete M.¹  Universidade Federal de São Carlos, São Carlos¹  Universidade de São Paulo, São Carlos¹  Assaf, José M.¹  Batista, Marcelo S.¹ 

关键词: ethanol steam reforming;    hydrogen production;    cobalt oxide.;   

DOI  :  10.1590/S0100-40422005000400006

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The development of cobalt catalysts to produce hydrogen from ethanol is the goal of this investigation. Co/Al2O3 catalysts were prepared by impregnation and characterized by atomic absorption, nitrogen adsorption, X-ray diffraction, Raman spectroscopy, temperature programmed reduction and carbon analysis. The catalysts contained Co3O4 oxide and Co3+ and Co2+ species interacting with alumina. The cobalt load affects the crystal size and the crystalline structure and higher Co loads influence the reaction mechanism, changing the selectivity of the catalysts, decreasing the amount of CO produced and avoiding the formation of products catalyzed by the support. The ethanol conversion was 50-70% with 10-<1% of CO in the hydrogen.

【 授权许可】

Unknown