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题名: Autothermal Reforming of Methane Over CeO2-ZrO2-La2O3 Supported Rh Catalyst
作者: Cao, Lei1, 2;  Ni, Changjun1;  Yuan, Zhongshan1;  Wang, Shudong1
通讯作者: 王树东
关键词: Autothermal reforming of methane ;  Ceria-zirconia ;  La ;  Rh
刊名: CATALYSIS LETTERS
发表日期: 2009-09-01
DOI: 10.1007/s10562-009-9888-z
卷: 131, 期:3-4, 页:474-479
收录类别: SCI
文章类型: Article
部门归属: 9
项目归属: 901
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: Autothermal reforming of methane was studied over La-doped ceria-zirconia-supported Rh catalysts. The CH4 conversion increased from 49 to 60% on increasing the content of La3+ from 5 to 15%, while further increase in the La3+ content led to a slight decrease on both CH4 conversion and H-2 selectivity. H-2-TPR and UV-vis DRS spectrum showed that the interaction between Rh and the support was enhanced by increasing the content of La. We speculated that a so-called "Rh-La interfacial species" was formed on the surface of the support, which played an important role in catalytic activity. The balance between exposed Rh and the "Rh-La interfacial species" was necessary to improve the catalytic activity. Upon increasing the Rh loading on 15% La-doped ceria-zirconia support, the balance was built, i.e., CH4 conversion increased from similar to 60 to 69% by increasing Rh loading from 0.1 to 0.5 wt% and only 2% conversion was elevated by doubling the Rh loading from 0.5 to 1.0 wt%.
关键词[WOS]: OXYGEN STORAGE CAPACITY ;  PARTIAL OXIDATION ;  SOLID-SOLUTIONS ;  OXIDE ;  REDUCIBILITY ;  HYDROGEN ;  CARBON ;  CO2
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000269883300022
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/102441
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, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Cao, Lei,Ni, Changjun,Yuan, Zhongshan,et al. Autothermal Reforming of Methane Over CeO2-ZrO2-La2O3 Supported Rh Catalyst[J]. CATALYSIS LETTERS,2009,131(3-4):474-479.
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