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Effect of precovered oxygen on the adsorption and decomposition of NO on Pt(110) surface
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
2006
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
关键词[WOS]NITRIC-OXIDE ADSORPTION ; PT(100) ; RU(001) ; XPS ; CHEMISORPTION ; AES ; UPS
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.
语种英语
WOS记录号WOS:000235437700015
引用统计
被引频次:3[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/321008/140034
专题中国科学院大连化学物理研究所
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
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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.
APA Li, JB,Huang, WX,Jiang, ZQ,&Bao, XH.(2006).Effect of precovered oxygen on the adsorption and decomposition of NO on Pt(110) surface.CHINESE JOURNAL OF CATALYSIS,27(1),65-70.
MLA Li, JB,et al."Effect of precovered oxygen on the adsorption and decomposition of NO on Pt(110) surface".CHINESE JOURNAL OF CATALYSIS 27.1(2006):65-70.
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