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题名: Highly active Pt-Fe bicomponent catalysts for CO oxidation in the presence and absence of H-2
作者: Xu, Hong1;  Fu, Qiang1;  Yao, Yunxi1;  Bao, Xinhe1
刊名: ENERGY & ENVIRONMENTAL SCIENCE
发表日期: 2012-04-01
DOI: 10.1039/c1ee02393d
卷: 5, 期:4, 页:6313-6320
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology ;  Life Sciences & Biomedicine
类目[WOS]: Chemistry, Multidisciplinary ;  Energy & Fuels ;  Engineering, Chemical ;  Environmental Sciences
研究领域[WOS]: Chemistry ;  Energy & Fuels ;  Engineering ;  Environmental Sciences & Ecology
英文摘要: Surface Fe ensembles, surface alloyed Fe atoms, and subsurface Fe species have been identified at Pt surfaces on the basis of studies in Fe-Pt(111) model systems and supported Pt-Fe nanoparticles (NPs). The surface Fe ensemble changes to ferrous oxide and forms a highly active and stable "FeO-on-Pt" structure in preferential oxidation of CO in the presence of H-2 (PROX), which, however, gets fully oxidized in CO oxidation in the absence of H-2 (COOX) and becomes inactive in the reaction. The surface alloyed Fe remains stable under the H-2-rich and O-2-rich reaction conditions, which are active for both PROX and COOX reactions. Accordingly, highly efficient Pt-Fe catalysts for the PROX and COOX reactions can be prepared via mild reduction and/or acid leaching.
关键词[WOS]: PREFERENTIAL OXIDATION ;  CARBON-MONOXIDE ;  BIMETALLIC SURFACES ;  ABSOLUTE ELECTRONEGATIVITY ;  FE/ZEOLITE CATALYSTS ;  ELECTRONIC-STRUCTURE ;  SELECTIVE OXIDATION ;  CHEMICAL-PROPERTIES ;  ALLOY SURFACES ;  HYDROGEN
语种: 英语
WOS记录号: WOS:000301984200007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/143152
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, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Xu, Hong,Fu, Qiang,Yao, Yunxi,et al. Highly active Pt-Fe bicomponent catalysts for CO oxidation in the presence and absence of H-2[J]. ENERGY & ENVIRONMENTAL SCIENCE,2012,5(4):6313-6320.
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