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题名: Interface-Confined Ferrous Centers for Catalytic Oxidation
作者: Fu, Qiang1;  Li, Wei-Xue1, 2;  Yao, Yunxi1;  Liu, Hongyang1;  Su, Hai-Yan1, 2;  Ma, Ding1;  Gu, Xiang-Kui1, 2;  Chen, Limin1;  Wang, Zhen1;  Zhang, Hui3;  Wang, Bing3;  Bao, Xinhe1
刊名: SCIENCE
发表日期: 2010-05-28
DOI: 10.1126/science.1188267
卷: 328, 期:5982, 页:1141-1144
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
英文摘要: Coordinatively unsaturated ferrous (CUF) sites confined in nanosized matrices are active centers in a wide range of enzyme and homogeneous catalytic reactions. Preparation of the analogous active sites at supported catalysts is of great importance in heterogeneous catalysis but remains a challenge. On the basis of surface science measurements and density functional calculations, we show that the interface confinement effect can be used to stabilize the CUF sites by taking advantage of strong adhesion between ferrous oxides and metal substrates. The interface-confined CUF sites together with the metal supports are active for dioxygen activation, producing reactive dissociated oxygen atoms. We show that the structural ensemble was highly efficient for carbon monoxide oxidation at low temperature under typical operating conditions of a proton-exchange membrane fuel cell.
关键词[WOS]: PREFERENTIAL OXIDATION ;  CARBON-MONOXIDE ;  CO OXIDATION ;  OXIDE LAYERS ;  FE ;  SURFACES ;  SITES ;  NANOPARTICLES ;  ADSORPTION ;  ZEOLITES
语种: 英语
WOS记录号: WOS:000278104700039
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142054
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
2.Chinese Acad Sci, Dalian Inst Chem Phys, Ctr Theoret & Computat Chem, Dalian 116023, Peoples R China
3.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China

Recommended Citation:
Fu, Qiang,Li, Wei-Xue,Yao, Yunxi,et al. Interface-Confined Ferrous Centers for Catalytic Oxidation[J]. SCIENCE,2010,328(5982):1141-1144.
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