Influence of the support and promotion on the structure and catalytic performance of copper-cobalt catalysts for carbon monoxide hydrogenation

被引：59

作者：

Wang, Jingjuan ^{[1
,2
]}

Chernavskii, Petr A. ^{[3
]}

Wang, Ye ^{[2
]}

Khodakov, Andrei Y. ^{[1
]}

机构：

[1] USTL ENSCL EC Lille, CNRS, Unite Catalyse & Chim Solide, UMR 8181, F-59655 Villeneuve Dascq, France

[2] Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Natl Engn Lab Green Chem Product Alcohols Ethers, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China

[3] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119992, Russia

来源：

FUEL | 2013年 / 103卷

基金：

中国国家自然科学基金;

关键词：

Syngas; Co-Cu-based catalysts; Higher alcohols synthesis; Support effect; Promotion; FISCHER-TROPSCH SYNTHESIS; HIGHER ALCOHOLS SYNTHESIS; METHANOL SYNTHESIS; ALKALINE-METALS; MODEL CATALYSTS; IRON-CATALYSTS; SYNGAS; CO; NANOTUBES; ADSORPTION;

D O I：

10.1016/j.fuel.2012.07.055

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This paper focuses on the effect of support and promotion on the structure and catalytic performance of copper-cobalt catalysts for carbon monoxide hydrogenation. Cu-Co catalysts supported by alumina, silica and carbon nanotubes were prepared by co-incipient-wetness impregnation and are compared with CuCoAl catalyst prepared by coprecipitation. Alumina supported catalysts exhibited much higher alcohol selectivity than their counterparts. This phenomenon was attributed to higher metal dispersion and formation of copper cobalt bimetallic species in alumina supported catalysts which seem to be active in this reaction. Addition of promoter (K, Mg, Zr, and Fe) to alumina supported copper-cobalt catalysts results in a slight modification of metal dispersion, reducibility and catalyst basicity. The alcohol selectivity was improved by promotion of the supported Cu-Co catalysts with small amounts of Fe and Zr but depressed by K and Mg. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：1111 / 1122

页数：12

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