THE INFLUENCE OF SULFUR-DIOXIDE ON PROPANE OXIDATION ACTIVITY OVER SUPPORTED PLATINUM AND PALLADIUM

被引：33

作者：

HUBBARD, CP ^{[1
]}

OTTO, K ^{[1
]}

GANDHI, HS ^{[1
]}

NG, KYS ^{[1
]}

机构：

[1] FORD MOTOR CO,FORD RES LAB,DEARBORN,MI 48121

来源：

CATALYSIS LETTERS | 1995年 / 30卷 / 1-4期

关键词：

PROPANE; OXIDATION; PLATINUM; PALLADIUM; SULFUR DIOXIDE; ALUMINA; ZIRCONIA; ACTIVITY; ACIDITY; KINETICS;

D O I：

10.1007/BF00813671

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：

Earlier studies have shown that sulfur dioxide and metal-support interaction can strongly influence propane oxidation over platinum. In particular, oxidation activity is enhanced when platinum is supported on sulfated gamma-alumina or zirconia compared to gamma-alumina. Therefore, it is of interest to compare the performance of palladium under the same experimental conditions. Four model catalysts were examined: Pt/gamma-alumina, Pt/zirconia, Pd/gamma-alumina and Pd/zirconia. The metal loading was kept at or below 0.05 wt% to emphasize changes in activity attributable to metal-support interaction. Reaction rates were measured with and without sulfur dioxide. Surface sulfation was analyzed by measuring acid strength and evaluating spectra obtained by Fourier-transform infrared spectroscopy. In contrast to platinum, sulfation does not promote propane oxidation on Pd/gamma-alumina, and Pd/zirconia is less active than Pd/gamma-alumina.

引用

页码：41 / 51

页数：11

共 28 条

[1] SOLID CATALYST TREATED WITH ANION .18. BENZOYLATION OF TOLUENE WITH BENZOYL CHLORIDE AND BENZOIC ANHYDRIDE CATALYZED BY SOLID SUPERACID OF SULFATE-SUPPORTED ALUMINA [J].