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题名: Dispersion and site-blocking effect of molybdenum oxide for CO chemisorption on the Pt(110) substrate
作者: Jiang, Zhiquan;  Huang, Weixin;  Zhao, Hong;  Zhang, Zhen;  Tan, Dali;  Bao, Xinhe
通讯作者: 包信和
关键词: molybdenum ;  Pt(110) ;  thermal desorption spectroscopy ;  X-ray photoelectron spectroscopy ;  high-resolution electron-energy-loss spectroscopy
刊名: JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
发表日期: 2007-05-01
DOI: 10.1016/j.molcata.2006.12.024
卷: 268, 期:1-2, 页:213-220
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 502
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: The Pt(1 1 0) model surfaces modified by the metallic molybdenum and by the MoOx (molybdenum oxide species) were fabricated via thermal decomposition of MO(CO)(6) and subsequent oxidation on a clean Pt(1 10) substrate, by means of Auger electron spectroscopy (AES) and X-ray photoelectron spectroscopy (XPS), as well as high-resolution electron-energy-loss spectroscopy (HREELS). CO chemisorption on these model surfaces was investigated using thermal desorption spectroscopy (TDS) and HREELS. The presence of the metallic molybdenum and MoOx species suppresses CO chemisorption on the Pt(1 10) substrate, indicating a physically site-blocking effect. The electron-deficiency of the Pt(I 10), due to the modification of metallic molybdenum, causes the low-temperature peak of CO desorption to shift downward in temperature by similar to 30 K. The interaction between the MoOx and the underlying Pt(1 10) substrate has no influence on CO desorption temperature. (c) 2007 Published by Elsevier B.V.
关键词[WOS]: MO BIMETALLIC CATALYSTS ;  THIN ALUMINA FILMS ;  SURFACE-CHEMISTRY ;  METHYL RADICALS ;  CARBON-MONOXIDE ;  INFRARED-SPECTROSCOPY ;  METHANOL OXIDATION ;  RAMAN-SPECTROSCOPY ;  METAL-CARBONYLS ;  CERIUM OXIDE
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000245897100032
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/99223
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.Univ Sci & Technol China, Dept Chem Phys, Hefei 230026, Peoples R China

Recommended Citation:
Jiang, Zhiquan,Huang, Weixin,Zhao, Hong,et al. Dispersion and site-blocking effect of molybdenum oxide for CO chemisorption on the Pt(110) substrate[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,2007,268(1-2):213-220.
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