EFFECT OF HIGH TEMPERATURE REDUCTION ON THE SURFACE COMPOSITION OF AND CO CHEMISORPTION OF Ni/TiO2.

被引：31

作者：

Takatani, S. ^{[1
]}

Chung, Y.W. ^{[1
]}

机构：

[1] Northwestern Univ, Dep of Materials, Science & Engineering, Evanston,, IL, USA, Northwestern Univ, Dep of Materials Science & Engineering, Evanston, IL, USA

来源：

Applications of surface science | 1983年 / 19卷 / 1-4期

关键词：

ADSORPTION - Efficiency - CARBON MONOXIDE - Adsorption - SURFACES - Spectroscopic Analysis - TITANIUM OXIDES - Reduction;

D O I：

10.1016/0378-5963(84)90071-0

中图分类号：

学科分类号：

摘要：

Surface composition of and CO chemisorption on a partially oxidized titanium foil covered with 120 A of nickel was examined by Auger electron spectroscopy (AES) after various amounts of hydrogen reduction at 700 K. AES and sputter-profiling showed the segregation of submonolayer amounts of reduced titanium oxide on the nickel surface after 10-40 min of hydrogen reduction at 700 K. The maximum CO uptake at room temperature was reduced to 30-40% of the pre-reduction value after 30 min of hydrogen reduction. These observations suggest that the commonly reported phenomenon of strong metal-support interaction (SMSI) is a result of partial coverage of the metal catalyst surface by titanium oxide.

引用

页码：341 / 347