DICP OpenIR
Step enhanced dehydrogenation of ethanol on Rh
Resta, Andrea1; Gustafson, Johan1; Westerstrom, Rasmus1; Mikkelsen, Anders1; Lundgren, Edvin1; Andersen, Jesper N.1; Yang, Ming-Mei2; Ma, Xiu-Fang2; Bao, Xin-He2; Li, Wei-Xue2; J.N.Andersen; J.N.Andersen
关键词Density Functional Calculations Chemisorption Photoelectron Spectroscopy Catalysis Soft X-ray Photoelectron Spectroscopy Surface Chemical Reaction Synchrotron Radiation Photoelectron Spectroscopy Rh Ethanol Methylidyne Ethylidyne c Co h
刊名SURFACE SCIENCE
2008-09-15
ISSN0039-6028
DOI10.1016/j.susc.2008.08.004
602期:18页:3057-3063
收录类别SCI
文章类型Article
部门归属5
项目归属507,502
产权排名2;7
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical ; Physics, Condensed Matter
研究领域[WOS]Chemistry ; Physics
关键词[WOS]C-1S PHOTOEMISSION ; ADSORPTION ; RH(111) ; METHANE ; SPECTRA ; TEMPERATURE ; ETHYLIDYNE ; CATALYSTS ; MOLECULES ; HYDROGEN
英文摘要We have investigated the adsorption and decomposition of ethanol on the Rh(111) and Rh(5 5 3) surfaces at room temperature with special emphasis on the dehydrogenation. We use high resolution Core level photoemission and density functional theory (DFT) based simulations. A detailed analysis of the C1s core level spectra, including analysis of the vibrational fine-structure and comparison to calculated C1s binding energy shifts, shows that the ethanol decomposes into CO, ethylidyne (C2H3) methylidyne (CH), atomic C, and hydrogen. At low ethanol exposures, CH is the dominating hydrocarbon fragment on Rh(111), whereas on Rh(553) atomic C dominates over CH, indicating an enhanced dehydrogenation due to the steps present on the latter surface. At higher ethanol exposures we find a similar behavior of atomic C dominating over hydrocarbons on Rh(553), while on Rh(111) atomic carbon remains a minority species. Our DFT based simulations show that the enhanced dehydrogenation results from a significant lowering of the CH dissociation barrier from Rh(111) to Rh(553), as well as from the dissociation changing from endothermic on Rh(111) to exothermic on Rh(553). (C) 2008 Elsevier B.V. All rights reserved.
语种英语
原文出处查看原文
WOS记录号WOS:000260550500018
引用统计
被引频次:16[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/100287
专题中国科学院大连化学物理研究所
通讯作者J.N.Andersen; J.N.Andersen
作者单位1.Lund Univ, Inst Phys, Dept Synchrotron Radiat Res, S-22100 Lund, Sweden
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式
GB/T 7714
Resta, Andrea,Gustafson, Johan,Westerstrom, Rasmus,et al. Step enhanced dehydrogenation of ethanol on Rh[J]. SURFACE SCIENCE,2008,602(18):3057-3063.
APA Resta, Andrea.,Gustafson, Johan.,Westerstrom, Rasmus.,Mikkelsen, Anders.,Lundgren, Edvin.,...&J.N.Andersen.(2008).Step enhanced dehydrogenation of ethanol on Rh.SURFACE SCIENCE,602(18),3057-3063.
MLA Resta, Andrea,et al."Step enhanced dehydrogenation of ethanol on Rh".SURFACE SCIENCE 602.18(2008):3057-3063.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Resta, Andrea]的文章
[Gustafson, Johan]的文章
[Westerstrom, Rasmus]的文章
百度学术
百度学术中相似的文章
[Resta, Andrea]的文章
[Gustafson, Johan]的文章
[Westerstrom, Rasmus]的文章
必应学术
必应学术中相似的文章
[Resta, Andrea]的文章
[Gustafson, Johan]的文章
[Westerstrom, Rasmus]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。