Metal-support interactions in surface-modified Cu-Co catalysts applied in higher alcohol synthesis

被引：35

作者：

Bordoloi, Ankur ^{[1
]}

Anton, Johan ^{[2
]}

Ruland, Holger ^{[2
]}

Muhler, Martin ^{[2
]}

Kaluza, Stefan ^{[2
,3
]}

机构：

[1] Indian Inst Petr, CSIR, Dehra Dun, India

[2] Ruhr Univ Bochum, Lab Ind Chem, Bochum, Germany

[3] Fraunhofer Inst Environm Safety & Energy Technol, Oberhausen, Germany

来源：

CATALYSIS SCIENCE & TECHNOLOGY | 2015年 / 5卷 / 07期

关键词：

COPPER-COBALT CATALYSTS; SYNTHESIS GAS; ETHANOL; CONVERSION; ALUMINA; SYNGAS; REDUCTION; BIOMASS;

D O I：

10.1039/c5cy00421g

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：

Cu-Co-based model catalysts were prepared by a sophisticated alkali-free synthesis method and tested in the conversion of synthesis gas to higher alcohols. MoO3-coated alumina was used as the support, providing both high specific surface area and strongly interacting sites for the deposition of the active metals. A bulk Cu/Co ratio of similar to 2 was found to be most suitable in terms of activity and product distribution. Surface enrichment of Mo for all samples was observed by XPS, which significantly influenced the performance of the catalysts. Mo was found to be both a structural and a chemical promoter. Strong metal-support interactions were further achieved by modification of alumina with magnesia. With 12 wt% Mg incorporated, the catalysts showed 40% total oxygenate selectivity including 11% selectivity to ethanol.

引用

页码：3603 / 3612

页数：10

共 40 条

[1] Fast and Reproducible Testing of Cu-Co-Based Catalysts Applied in the Conversion of Synthesis Gas to Ethanol and Higher Alcohols [J].