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题名: The effect of supports on the activity of methane dissociation over Rh catalysts
作者: Wang Rui;  Xu Hengyong;  Chen Yanxin;  Li Wenzhao
关键词: methane dissociation ;  rhodium ;  alumina ;  silica ;  supported catalyst ;  ceria ;  interaction ;  acidity
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2007-04-01
卷: 28, 期:4, 页:293-295
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: The Rh-CeO2, interaction and the activity of CH4 dissociation were investigated on Al2O3- and SiO2-supported Rh catalysts by using the pulse reaction technique, infrared spectroscopy of CO adsorbed, and infrared spectroscopy of pyridine adsorbed. The Rh-CeO2 interaction was strongly influenced by the acidity of support. Addition of CeO2, to Rh/Al2O3 increased the number of Lewis acid sites on Al2O3, which in turn enhanced the ability of Al2O3 to accept electrons. This decreased the electron density of Rh and consequently facilitated the activation and dissociation of CH4 on Rh. On the contrary, the addition of CeO2 to Rh/SiO2 decreased both the number and the strength of Lewis acid sites on SiO2, which weakened the electron- accepting ability of SiO2. As a result, it brought out an increase in the electron density of Rh and inhibited CH4 dissociation on Rh.
关键词[WOS]: ZEOLITE ;  CO2
语种: 英语
WOS记录号: WOS:000246604600003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140423
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 116023, Liaoning, Peoples R China
2.Grad Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Wang Rui,Xu Hengyong,Chen Yanxin,et al. The effect of supports on the activity of methane dissociation over Rh catalysts[J]. CHINESE JOURNAL OF CATALYSIS,2007,28(4):293-295.
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