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题名: CO adsorption on the O-saturated Ag/Pt(110) composite surface: Direct observation of the diffusion of adsorbed CO from strongly bound Pt sites to weakly bound Ag sites
作者: Huang, WX;  Bao, XH;  Rotermund, HH;  Ertl, G
刊名: JOURNAL OF PHYSICAL CHEMISTRY B
发表日期: 2002-06-06
DOI: 10.1021/jp025717i
卷: 106, 期:22, 页:5645-5647
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: In our work, photoemission electron microscopy (PEEM) was employed to real-time and in situ study CO adsorption on the O-saturated Ag/Pt(110) composite surface. Coupling occur-red between adjacent surfaces with different activities for CO + O-ad reaction. in which adsorbed CO was directly observed to migrate from strongly bound Pt sites to weakly bound Ag sites in the form of reaction-diffusion wave. Our results imply that surface species may migrate not only from weakly bound sites to strongly bound sites (enthalpy favorable process) but also from strongly bound sites to weakly hound sites (enthalpy unfavorable process) during heterogeneous catalysis reactions.
关键词[WOS]: PHOTOEMISSION ELECTRON-MICROSCOPY ;  ADJACENT CRYSTAL PLANES ;  SINGLE-CRYSTAL ;  HETEROGENEOUS CATALYSIS ;  KINETIC OSCILLATIONS ;  OXIDATION ;  SCIENCE
语种: 英语
WOS记录号: WOS:000176049700010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139226
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.Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Max Planck Soc, Fritz Haber Inst, D-14195 Berlin, Germany

Recommended Citation:
Huang, WX,Bao, XH,Rotermund, HH,et al. CO adsorption on the O-saturated Ag/Pt(110) composite surface: Direct observation of the diffusion of adsorbed CO from strongly bound Pt sites to weakly bound Ag sites[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2002,106(22):5645-5647.
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