Synthesis of natural gas from CO methanation over SiC supported Ni-Co bimetallic catalysts

被引：85
|
作者：
Yu, Yue [1 ,2 ]
Jin, Guoqiang [1 ]
Wang, Yingyong [1 ]
Guo, XiangYun [1 ]
机构：
[1] Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2013年 / 31卷
关键词：
CO methanation; Bimetallic catalyst; Synergetic effect; NICKEL; COBALT; HYDROGENATION;
D O I：
10.1016/j.catcom.2012.11.005
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：
A series of SiC supported bimetallic Ni-Co catalysts with different Ni/Co ratios was investigated for CO methanation reaction. Compared with monometallic Ni- and Co-based catalysts, the bimetallic Ni-Co catalysts showed higher methanation activity and the Ni/Co ratios significantly affected the methanation activity. The highest activity was obtained over 6Ni4Co/SiC bimetallic catalyst, which also showed excellent stability during the methanation reaction. Further characterizations revealed that the surface enrichment of metal components occurred on the bimetallic catalysts. The interaction between Ni and Co and higher metal dispersion might improve the adsorption and activation of CO and thus enhance the methanation activity of the bimetallic catalysts. (C) 2012 Elsevier B.V. All rights reserved.
引用
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页码：5 / 10
页数：6
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