SURFACE OXIDE-FILMS AND H2/CO CHEMISORPTION AT THE RU/TIO2 INTERFACE - STUDIES WITH A MODEL PLANAR CATALYST

被引：8
作者：
BADYAL, JPS
LAMBERT, RM
机构：
[1] UNIV CAMBRIDGE,DEPT CHEM,CAMBRIDGE CB2 1EW,ENGLAND
[2] UNIV DURHAM,DEPT CHEM,SCI LABS,DURHAM DH1 3LE,ENGLAND
来源：
JOURNAL OF CATALYSIS | 1991年 / 130卷 / 01期
关键词：
D O I：
10.1016/0021-9517(91)90101-9
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：
The properties of high temperature treated (HTT) films of titanium oxide on Ru(0001) have been examined by electron spectroscopy, LEER, and CO/H, chemisorption. Starting with as-deposited TiOx, films, surface-to-bulk transport begins at ∼700 K provided that the initial oxide loading exceeds 0.68 ML. The system stabilises at ∼ 1400 K with formation of a tenaciously held residual oxide film which is shown by LEER, Auger, and XPS measurements to be an expanded monolayer of TiO. No surface → bulk transport occurs for TiO, loadings below the critical value of 0.68 ML. Chemisorptive properties have been studied as a function of HTT-TiOx, film coverage and the results are discussed with respect to the SMSI phenomenon. © 1991.
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页码：173 / 180
页数：8
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