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题名: Effect of precovered oxygen on the adsorption and decomposition of NO on Pt(110) surface
作者: Li, JB;  Huang, WX;  Jiang, ZQ;  Bao, XH
关键词: nitric oxide ;  oxygen ;  platinum ;  adsorption ;  decomposition ;  surface chemistry
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2006
卷: 27, 期:1, 页:65-70
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: The adsorption and decomposition of NO on clean and oxygen-precovered Pt(110) surfaces were investigated by means of thermal desorption spectroscopy, X-ray photoelectron spectroscopy, and high-resolution electron energy loss spectroscopy. At room temperature, NO molecularly adsorbs on the clean Pt(110) surface. NO adsorbing on the bridge sites dominates at low coverage whereas NO adsorbs on the terminal sites at high coverage. Some NO (mainly the bridge-bound NO) undergoes dissociation upon heating, forming N and N2O. Molecular oxygen dissociates on Pt(110) at room temperature. Precovered oxygen adatoms on Pt(110) inhibit the formation of bridge-bound NO, which results in a decrease in the desorption temperature of bridge-bound NO from the surface by 40 K. The decrease in the desorption temperature facilitates the thermal desorption of bridge-bound NO on Pt(110), and thus inhibits the dissociation reaction of NO. These results provide a reasonable surface science approach to understand the deactivation of Pt catalysts for NO decomposition under the oxygen rich atmosphere.
关键词[WOS]: NITRIC-OXIDE ADSORPTION ;  PT(100) ;  RU(001) ;  XPS ;  CHEMISORPTION ;  AES ;  UPS
语种: 英语
WOS记录号: WOS:000235437700015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140034
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.Yanshan Petrochem Corp, Inst Res, Beijing 102500, Peoples R China
2.Univ Sci & Technol China, Dept Phys Chem, Hefei 230026, Anhui, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Li, JB,Huang, WX,Jiang, ZQ,et al. Effect of precovered oxygen on the adsorption and decomposition of NO on Pt(110) surface[J]. CHINESE JOURNAL OF CATALYSIS,2006,27(1):65-70.
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