CHEMOSELECTIVE CATALYTIC-OXIDATION OF GLYCEROL WITH AIR ON PLATINUM METALS

被引：281

作者：

GARCIA, R ^{[1
]}

BESSON, M ^{[1
]}

GALLEZOT, P ^{[1
]}

机构：

[1] INST RECH CATALYSE, CNRS, F-69626 VILLEURBANNE, FRANCE

来源：

APPLIED CATALYSIS A-GENERAL | 1995年 / 127卷 / 1-2期

关键词：

DIHYDROXYACETONE; GLYCERIC ACID; GLYCEROL; OXIDATION; PALLADIUM; PLATINUM;

D O I：

10.1016/0926-860X(95)00048-8

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 transesterification of triglycerides extracted from oilseeds to obtain biodiesel fuel yields up to 14% by weight of glycerol as by-product. The liquid-phase oxidation of glycerol with air on platinum catalysts was investigated to prepare valuable oxidation products such as glyceric acid or dihydroxyacetone. The effect of the pH (pH range 2-11) and of different metal catalysts was studied. The selectivity to glyceric acid can be as high as 70% at 100% conversion on Pd/C at pH 11. On Pt/C catalyst, glyceric acid was still the main product (55% selectivity); but the deposition of bismuth on platinum particles orientates the selectivity towards the oxidation of the secondary hydroxyl group to yield dihydroxyacetone with a selectivity of 50% at 70% conversion.

引用

页码：165 / 176

页数：12

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