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The effect of supports on the activity of methane dissociation over Rh catalysts
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
2007-04-01
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
关键词[WOS]ZEOLITE ; CO2
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.
语种英语
WOS记录号WOS:000246604600003
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140423
专题中国科学院大连化学物理研究所
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
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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.
APA Wang Rui,Xu Hengyong,Chen Yanxin,&Li Wenzhao.(2007).The effect of supports on the activity of methane dissociation over Rh catalysts.CHINESE JOURNAL OF CATALYSIS,28(4),293-295.
MLA Wang Rui,et al."The effect of supports on the activity of methane dissociation over Rh catalysts".CHINESE JOURNAL OF CATALYSIS 28.4(2007):293-295.
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