Oxidative steam-reforming of ethanol over Co/SiO2, Co-Ru/SiO2 and Co-Ru/SiO2 catalysts:: Catalytic behavior and deactivation/regeneration processes

被引：127
|
作者：
Pereira, Evandro B. [1 ,2 ]
Homs, Narcis [1 ,2 ]
Marti, Salvador [1 ,2 ]
Fierro, J. L. G. [3 ]
de la Piscina, Pilar Ramirez [1 ,2 ]
机构：
[1] Univ Barcelona, Dept Quim Inorgan, Barcelona 08028, Spain
[2] Univ Barcelona, Inst Nanociencia Nanotecnol, E-08028 Barcelona, Spain
[3] CSIC, Inst Catalisis & Petr Quim, ES-28049 Madrid, Spain
来源：
JOURNAL OF CATALYSIS | 2008年 / 257卷 / 01期
关键词：
hydrogen production; oxidative ethanol steam-reforming; cobalt-rhodium catalyst; cobalt-ruthenium catalyst; catalyst regeneration;
D O I：
10.1016/j.jcat.2008.05.001
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
This paper focuses on the effect of Ru and Rh addition to SiO2-supported Co catalysts for the oxidative steam reforming of ethanol to produce hydrogen. Catalysts were tested in the reaction at atmospheric pressure and 623-673 K and characterized by X-ray diffraction, temperature-programmed reduction, X-ray photoelectron spectroscopy, and infrared spectroscopy with CO as the probe molecule. A synergistic effect between Co and Rh or Ru was seen in the oxidative steam reforming of ethanol. A study of the deactivation/regeneration of catalysts found that an oxidizing treatment recovered the performance of deactivated bimetallic catalysts. This process could be used in cycles to optimize both ethanol conversion and selectivity toward hydrogen production. (c) 2008 Elsevier Inc. All rights reserved.
引用
收藏
页码：206 / 214
页数：9
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