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学科主题: 物理化学
题名: Insight into the reaction route of CO2 methanation: Promotion effect of medium basic sites
作者: Pan, Qiushi1, 2;  Peng, Jiaxi1;  Sun, Tianjun1;  Wang, Sheng1;  Wang, Shudong1
通讯作者: 王树东
关键词: Carbon dioxide methanation ;  Ceria-zirconia oxides ;  Basic sites ;  FTIR spectroscopy ;  Reaction route
刊名: CATALYSIS COMMUNICATIONS
发表日期: 2014-02-05
DOI: 10.1016/j.catcom.2013.10.034
卷: 45, 期:1, 页:74-78
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: Ce0.5Zr0.5O2 and gamma-Al2O3 supported nickel catalysts were investigated for CO2 adsorption and methanation using in-situ FTIR spectroscopy. The reaction pathway on Ni/gamma-Al2O3 is similar to that on Ni/Ce0.5Zr0.5O2, only differing in reactive basic sites. CO2 adsorption on medium basic sites of Ni/Ce0.5Zr0.5O2 results in monodentate carbonates. CO2 adsorbed on strong basic sites of Ni/gamma-Al2O3 will not participate in the reaction. It was assumed that monodentate formate derived from monodentate carbonate on medium basic sites, could be hydrogenated more quickly than bidentate formate derived from hydrogen carbonate. Medium basic sites were proposed to enhance CO2 methanation activity. (C) 2013 Elsevier B.V. All rights reserved.
关键词[WOS]: WATER-GAS SHIFT ;  CARBON-DIOXIDE ;  INFRARED-SPECTROSCOPY ;  ZIRCONIA CATALYSTS ;  CERIUM OXIDE ;  SURFACE ;  HYDROGENATION ;  TEMPERATURE ;  ADSORPTION ;  RUTHENIUM
语种: 英语
WOS记录号: WOS:000331595400016
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/143980
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China

Recommended Citation:
Pan, Qiushi,Peng, Jiaxi,Sun, Tianjun,et al. Insight into the reaction route of CO2 methanation: Promotion effect of medium basic sites[J]. CATALYSIS COMMUNICATIONS,2014,45(1):74-78.
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