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

Authors
Ruth, K Hayes, M Burch, R Tsubota, S Haruta, M
Citation
K. Ruth et al., The effects of SO2 on the oxidation of CO and propane on supported Pt and Au catalysts, APP CATAL B, 24(3-4), 2000, pp. L133-L138
Citations number
13
Categorie Soggetti
Physical Chemistry/Chemical Physics","Environmental Engineering & Energy
Journal title
APPLIED CATALYSIS B-ENVIRONMENTAL
ISSN journal
09263373 → ACNP
Volume
24
Issue
3-4
Year of publication
2000
Pages
L133 - L138
Database
ISI
SICI code
0926-3373(20000207)24:3-4<L133:TEOSOT>2.0.ZU;2-6
Abstract
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 h igher activities for CO oxidation, the Pt catalysts were more active for pr opane combustion. A strong de-activation of the CO oxidation activity by SO 2 was observed only over the TiO2 -supported Au catalyst, indicating that S O2 can block the active sites for CO oxidation over Au catalysts. The resul ts 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 Scie nce B.V. All rights reserved.