Deactivation of metal catalysts in liquid phase organic reactions

被引：223

作者：

Besson, M ^{[1
]}

Gallezot, P ^{[1
]}

机构：

[1] Inst Rech Catalyse, CNRS, F-69626 Villeurbanne, France

来源：

CATALYSIS TODAY | 2003年 / 81卷 / 04期

关键词：

deactivation; Ru/TiO2; trickle-bed reactor;

D O I：

10.1016/S0920-5861(03)00153-6

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The paper gives a general survey of the factors contributing to the deactivation of metal catalysts employed in liquid phase reactions for the synthesis of fine or intermediate chemicals. The main causes of catalyst deactivation are particle sintering, metal and support leaching, deposition of inactive metal layers or polymeric species, and poisoning by strongly adsorbed species. Weakly adsorbed species, poisons at low surface coverage and solvents, may act as selectivity promoters or modifiers. Three examples of long term stability studies carried out in trickle-bed reactor (glucose to sorbitol hydrogenation on Ru/C catalysts, hydroxypropanal to 1,3-propanediol hydrogenation on Ru/TiO2 catalysts, and wet air oxidation of paper pulp effluents on Ru/TiO2) are discussed. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：547 / 559

页数：13

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