LIQUID-PHASE OXIDATION OF 1-METHOXY-2-PROPANOL WITH AIR .1. LEAD AND BISMUTH PROMOTION AND DEACTIVATION OF PALLADIUM CATALYSTS

被引：46

作者：

MALLAT, T ^{[1
]}

BAIKER, A ^{[1
]}

机构：

[1] SWISS FED INST TECHNOL, DEPT CHEM ENGN & IND CHEM, CH-8092 ZURICH, SWITZERLAND

来源：

APPLIED CATALYSIS | 1991年 / 79卷 / 01期

关键词：

BISMUTH PROMOTION; DEACTIVATION; LEAD PROMOTION; OXIDATION; PALLADIUM ALUMINA; PALLADIUM CARBON; 1-METHOXY-2-PROPANOL; 1-METHOXY-2-PROPANONE;

D O I：

10.1016/0926-860X(91)85005-I

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 oxidation of 1-methoxy-2-propanol to 1-methoxy-2-propanone with air was studied on lead- and bismuth-promoted palladium catalysts in aqueous alkaline solutions. Several commercial palladium catalysts, supported on carbon or alumina, were tested with regard to their catalytic performance. The highest selectivity (ca. 85%) was measured for a lead-promoted 5 wt.-% palladium on carbon catalyst. Deactivation was observed with both promoted and unpromoted catalysts likely due to blocking of the active sites by side-products of high molecular weight. The mechanism of deactivation and the role of various parameters, including the nature of the support, the base and metal ion promoters are discussed. "Oxygen-poisoning" of palladium was found to be negligible under the conditions where the oxidation was carried out.

引用

页码：41 / 58

页数：18

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