CO adsorption on the surface of MgO(001) thin films

被引：26

作者：

Sterrer, M ^{[1
]}

Risse, T ^{[1
]}

Freund, HJ ^{[1
]}

机构：

[1] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

来源：

APPLIED CATALYSIS A-GENERAL | 2006年 / 307卷 / 01期

关键词：

MgO(001) thin films; CO adsorption; infrared spectroscopy; thermal desorption;

D O I：

10.1016/j.apcata.2006.03.007

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：

We report infrared reflection-absorption and thermal desorption spectra of CO adsorbed at low temperature (30 K) on the surface of MgO(0 0 1) thin films. The high similarity of the observed IR bands as compared to data reported for MgO(1 0 0) single crystals and sintered MgO particles gives evidence for the identical surface morphology of the different substrates. CO adsorption series taken at constant temperature/ variable pressure, variable temperature/constant pressure, as well as isotope mixing experiments reveal almost no diffusion of CO on MgO(0 0 1) at low temperature, but high adsorbate mobility at slightly elevated temperature. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：58 / 61

页数：4

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