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COADSORPTION OF CARBON-MONOXIDE AND OXYGEN ON PD(001)C(2X2)-MN - AN OXIDATION PATHWAY FOR CO2 FORMATION
Wu SC(吴思诚); Jia JF(贾金锋); WU, SC; JIA, JF; UW, K; LU, SH; ZHAO, RG; WANG, DS
1994
发表期刊SURFACE SCIENCE
卷号312期号:1-2页码:#REF!
文章类型Article
摘要CO adsorption and coadsorption with O2 on a Pd{001}c(2 x 2)-Mn ordered alloy surface were studied with low energy electron diffraction (LEED) and high-resolution electron energy loss spectroscopy (HREELS), At room temperature, the energy loss at 253 meV in the EEL spectra of CO on Pd{001}c(2 x 2)-Mn, is attributed to the C-O stretching vibration of CO molecules at on-top sites of first layer Pd atoms. This peak diminished as the surface was exposed to oxygen. At 140 K, a new feature located at 285 meV has been observed in the EEL spectra of the coadsorption of CO and O2. The peak position is near the asymmetric stretch mode of the CO2 gas phase (293 meV). As the oxygen precoverage was increased under constant CO exposure, the intensity of this peak was increased. This peak disappeared upon annealing to 300 K for 1 min. Analyses indicate that the 285 meV peak is caused by CO2 chemisorbed on Pd{001}c(2 x 2)-Mn with the molecular axis perpendicular to the surface. The reaction that produced CO2 could be explained by the microscopic process of the interaction between the oxygen atoms, which are dissociatively adsorbed at the hollow sites between two Mn and two Pd atoms, and CO molecules, at on-top sites of neighboring Pd atoms.
学科领域Chemistry; Physics
DOI10.1016/0039-6028(94)90814-1
收录类别SCI
WOS类目Chemistry, Physical ; Physics, Condensed Matter
WOS记录号WOS:A1994NQ05100021
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/226639
专题多学科研究中心
推荐引用方式
GB/T 7714
Wu SC,Jia JF,WU, SC,et al. COADSORPTION OF CARBON-MONOXIDE AND OXYGEN ON PD(001)C(2X2)-MN - AN OXIDATION PATHWAY FOR CO2 FORMATION[J]. SURFACE SCIENCE,1994,312(1-2):#REF!.
APA 吴思诚.,贾金锋.,WU, SC.,JIA, JF.,UW, K.,...&WANG, DS.(1994).COADSORPTION OF CARBON-MONOXIDE AND OXYGEN ON PD(001)C(2X2)-MN - AN OXIDATION PATHWAY FOR CO2 FORMATION.SURFACE SCIENCE,312(1-2),#REF!.
MLA 吴思诚,et al."COADSORPTION OF CARBON-MONOXIDE AND OXYGEN ON PD(001)C(2X2)-MN - AN OXIDATION PATHWAY FOR CO2 FORMATION".SURFACE SCIENCE 312.1-2(1994):#REF!.
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