HYDROGENATION OF CO2, ACETONE, AND CO ON A RH FOIL PROMOTED BY TITANIA OVERLAYERS

被引：55

作者：

WILLIAMS, KJ

BOFFA, AB

LAHTINEN, J

SALMERON, M

BELL, AT

SOMORJAI, GA

机构：

[1] UNIV CALIF BERKELEY, DEPT CHEM, BERKELEY, CA 94720 USA

[2] UNIV CALIF BERKELEY, DEPT CHEM ENGN, BERKELEY, CA 94720 USA

来源：

CATALYSIS LETTERS | 1990年 / 5卷 / 4-6期

关键词：

acetone hydrogenation; CO hydrogenation; CO[!sub]2[!/sub] hydrogenation; Titania promoted rhodium;

D O I：

10.1007/BF00765181

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 effects of submonolayer deposits of titania on the hydrogenation of CO2, acetone, and CO on a Rh foil have been investigated. Titania has been found to promote all three of the hydrogenation reactions, with each reaction exhibiting a maximum rate at a titania coverage of 0.5 ML. The maximum rate for CO2 hydrogenation is 15 times that of the bare Rh surface. Acetone hydrogenation shows a 6-fold rate enhancement, while CO displays a 3-fold increase. Changes in the selectivities for each reaction are also observed upon titania promotion. The effects of titania on these reactions are attributed to an interaction between C-O bonds and Ti3+ ions located at the perimeter of titania islands. © 1990 J.C. Baltzer A.G. Scientific Publishing Company.

引用

页码：385 / 394

页数：10

共 21 条

[1] MECHANISM OF STRONG METAL SUPPORT INTERACTION IN NI/TIO2 [J].