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题名: Role of Water in CO Oxidation on Gold Catalysts
作者: Fujitani, T.1;  Nakamura, I.1;  Haruta, M.2, 3
关键词: Gold catalyst ;  Nanoparticles ;  CO oxidation ;  Effect of water ;  Metal oxide support
刊名: CATALYSIS LETTERS
发表日期: 2014-09-01
DOI: 10.1007/s10562-014-1325-2
卷: 144, 期:9, 页:1475-1486
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: Gold nanoparticles supported on base metal oxides exhibit high catalytic activity in the low temperature oxidation of CO. Numerous studies have been carried out by using powder, single crystal, and planar model catalysts together with density functional theory calculations to elucidate the reaction mechanism and the nature of the active sites. A characteristic feature of these catalysts is that the moisture contained in the catalyst and in the reactant gas markedly enhances CO2 formation rates. The promoting role of moisture, which is advantageous for the practical applications to air purifiers, can be classified into four categories: (i) maintain cationic state of gold (Au3+ or Au+), (ii) direct involvement of H2O and OH- groups in CO oxidation, (iii) activation of O-2 molecules, and (iv) transformation of catalytic intermediates and inhibitors (spectators) such as carbonate species. The elucidation of the role of water in CO oxidation will deepen the understanding of the unique catalysis by gold.
关键词[WOS]: SUPPORTED AU CATALYSTS ;  RAY-ABSORPTION SPECTROSCOPY ;  CARBON-MONOXIDE OXIDATION ;  LOW-TEMPERATURE OXIDATION ;  AU/TIO2 CATALYST ;  PRETREATMENT CONDITIONS ;  SELECTIVE OXIDATION ;  AU/FE2O3 CATALYSTS ;  PERIMETER SITES ;  HYDROXYL-GROUPS
语种: 英语
WOS记录号: WOS:000340928800001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145542
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.Natl Inst Adv Ind Sci & Technol, Res Inst Innovat Sustainable Chem, Tsukuba, Ibaraki 3058569, Japan
2.Tokyo Metropolitan Univ, Grad Sch Urban Environm Sci, Dept Appl Chem, Res Ctr Gold Chem, Hachioji, Tokyo 1920397, Japan
3.Chinese Acad Sci, Dalian Inst Chem Phys, Gold Catalysis Res Ctr, Dalian 116023, Peoples R China

Recommended Citation:
Fujitani, T.,Nakamura, I.,Haruta, M.. Role of Water in CO Oxidation on Gold Catalysts[J]. CATALYSIS LETTERS,2014,144(9):1475-1486.
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