ADSORPTION AND REACTION OF MOLECULES ON SURFACES OF METAL-METAL OXIDE SYSTEMS

被引：56

作者：

FREUND, HJ ^{[1
]}

DILLMANN, B ^{[1
]}

EHRLICH, D ^{[1
]}

HASSEL, M ^{[1
]}

JAEGER, RM ^{[1
]}

KUHLENBECK, H ^{[1
]}

VENTRICE, CA ^{[1
]}

WINKELMANN, F ^{[1
]}

WOHLRAB, S ^{[1
]}

XU, C ^{[1
]}

BERTRAMS, T ^{[1
]}

BRODDE, A ^{[1
]}

NEDDERMEYER, H ^{[1
]}

机构：

[1] RUHR UNIV BOCHUM,INST EXPTL PHYS,W-4630 BOCHUM 1,GERMANY

来源：

JOURNAL OF MOLECULAR CATALYSIS | 1993年 / 82卷 / 2-3期

关键词：

ADSORPTION; ELECTRON SPECTROSCOPY; OXIDE SURFACES;

D O I：

10.1016/0304-5102(93)80030-X

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：

Molecular adsorption on oxide surfaces is pining increasing interest both experimentally and theoretically. Adsorption studies on model systems, where well ordered thin oxide films grown on a metal substrate to avoid sample charging in connection with electron spectroscopic measurements, were used, are reported. Two oxide systems are compared: (i) a reactive transition metal oxide surface of Cr2O3(111) where it is shown that the surface contains Cr2+ ions which trigger its reactivity; (ii) a non-reactive simple metal oxide surface of gamma-Al2O3(111) which is used as a support model surface. The adsorption of various molecules on both surfaces has been examined, and how the properties of the surface are modified when metals are deposited on the oxide surface have been studied. The results of alkali metal deposits on Cr2O3(111) and Pt deposits on gamma-Al2O3(111) are presented. The applied methods include LEED, STM, TPD, ARUPS, ELS, XPS, HREELS and ISS.

引用

页码：143 / 169

页数：27

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