期刊
APPLIED CATALYSIS A-GENERAL
卷 360, 期 1, 页码 17-25出版社
ELSEVIER
DOI: 10.1016/j.apcata.2009.02.040
关键词
Cobalt; Noble metal; Ethanol steam reforming; Magnesium aluminate
资金
- FAPESP
- CNPq
- Laboratorio Nacional de Luz Sincrotron [LNLS/D06A-DXAS]
The performance of noble metal (Pt, Ru, Ir)-promoted Co/MgAl2O4 catalysts for the steam reforming of ethanol was investigated. The catalysts were characterized by energy-dispersive X-ray spectroscopy, Xray diffraction, UV-vis diffuse reflectance spectroscopy, temperature-programmed reduction, temperature-programmed oxidation and X-ray absorption near edge structure (XANES). The results showed that the formation of inactive cobalt aluminate was suppressed by the presence of a MgAl2O4 spinel phase. The effects of the noble metals included a marked lowering of the reduction temperatures of the cobalt surface species interacting with the support. It was seen that the addition of noble metal stabilized the Co sites in the reduced state throughout the reaction. Catalytic performance was enhanced in the promoted catalysts, particularly CoRu/MgAl2O4, which showed the highest selectivity for H-2 production. (C) 2009 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据