The effects of SO2 on the oxidation of CO and propane on supported Pt and Au catalysts

被引：81

作者：

Ruth, K

Hayes, M

Burch, R

Tsubota, S

Haruta, M

机构：

[1] Univ Reading, Dept Chem, Ctr Catalysis Res, Reading RG6 6AD, Berks, England

[2] AIST, Osaka Natl Res Inst, Osaka 5638577, Japan

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2000年 / 24卷 / 3-4期

关键词：

catalysis; gold; platinum; carbon monoxide; propane; oxidation; sulphur dioxide; perimeter active;

D O I：

10.1016/S0926-3373(99)00100-9

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 catalytic activities of Pt and Au supported on TiO2 were compared with respect to the oxidation of CO and propane. While the Au catalysts showed higher activities for CO oxidation, the Pt catalysts were more active for propane combustion. A strong de-activation of the CO oxidation activity by SO2 was observed only over the TiO2 -supported Au catalyst, indicating that SO2 can block the active sites for CO oxidation over Au catalysts. The results are consistent with a model in which the perimeter sites have a special role in the CO oxidation reaction over Au catalysts. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：L133 / L138

页数：6

共 13 条

[1] EFFECTS OF SO2 ON THE ALKANE ACTIVITY OF 3-WAY CATALYSTS [J].