Development of a Ru/C catalyst for glycerol hydrogenolysis in combination with an ion-exchange resin

被引：215

作者：

Miyazawa, Tomohisa ^{[1
]}

Koso, Shuichi ^{[1
]}

Kunimori, Kimio ^{[1
]}

Tomishige, Keiichi ^{[1
]}

机构：

[1] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan

来源：

APPLIED CATALYSIS A-GENERAL | 2007年 / 318卷 / 244-251期

基金：

日本学术振兴会;

关键词：

glycerol; hydrogenolysis; ruthenium; ion-exchange resin; propanediol;

D O I：

10.1016/j.apcata.2006.11.006

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 combination of Ru/C and Amberlyst ion-exchange resin is effective for the dehydration and hydrogenation (denoted as hydrogenolysis) of glycerol to 1,2-propanediol under mild reaction conditions (393 K). A Ru/C catalyst prepared by using active carbon with a low surface area (similar to 250 m(2)/g) showed better performance than that prepared by using active carbon with a high surface area. In addition, treatment of Ru/C catalysts prepared from Ru(NO)(NO3)(3) with Ar flowing at the appropriate temperature enhanced the performance compared to that of the commercially available Ru/C catalysts. This temperature treatment can be influenced by the decomposition of Ru precursor salt and aggregation of Ru metal particles. In addition, the degradation reaction as a side-reaction to C1 and C2 compounds of glycerol hydrogenolysis was more structure-sensitive than the hydrogenolysis reaction, and the selectivity of hydrogenolysis was lower on smaller Ru particles. The combination of Ru/C with the Amberlyst resin enhanced the turnover frequency of 1,2-propanediol formation drastically, and this indicates that 1,2-propanediol can be formed mainly by dehydration of glycerol to acetol catalyzed by Amberlyst and subsequent hydrogenation of acetol to 1,2-propanediol catalyzed by Ru/C. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：244 / 251

页数：8

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