Adsorption of CO on a pseudomorphic palladium monolayer on Mo(110)

被引：12

作者：

Xu, C ^{[1
]}

Goodman, DQ ^{[1
]}

机构：

[1] TEXAS A&M UNIV,DEPT CHEM,COLLEGE STN,TX 77843

来源：

SURFACE SCIENCE | 1996年 / 360卷 / 1-3期

关键词：

carbon monoxide; chemisorption; electron energy loss spectroscopy; low energy electron diffraction (LEED); low index single crystal surfaces; metal-metal interfaces; molybdenum; palladium; thermal desorption; vibrations of adsorbed molecules;

D O I：

10.1016/0039-6028(96)00663-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Adsorption of CO on a Pd monolayer (ML) supported on Mo(110) has been studied using low energy electron diffraction (LEED), temperature programmed desorption (TPD), and high resolution electron energy loss spectroscopy (HREELS). Three ordered CO substructures denoted as ((1)(2) (1)(-1)) ((2)(-1) (1)(1)), and ((1)(2) (-1)(2)) are observed with LEED. The binding energy of CD on the 1.0 ML Pd/Mo(110) surface is reduced by 12 kcal/mol relative to the Pd(111) surface, consistent with previous results for supported palladium monolayers on other substrates. Two vibrational states of CO are observed near 1950 and 2050 cm(-1), with the feature at the lower wavenumber having the smaller binding energy.

引用

页码：249 / 254

页数：6

共 26 条

[1] CHEMISORPTION OF ULTRATHIN PD LAYERS ON W(110) AND W(100) - ADSORPTION OF H-2 AND CO [J].