Carbon Nanotube-Supported Copper-Cobalt Catalyst for the Production of Higher Carbon Number Alcohols through Carbon Monoxide Hydrogenation

Journal of the Brazilian Chemical Society

Du, Xihua¹  Wang, Peng² 

[1] Chinese Academy of Sciences, Taiyuan, China;Xuzhou Institute of Technology, Xuzhou, China

关键词: CO hydrogenation;    higher alcohols synthesis;    CuCo;    carbon nanotube.;   

DOI  :  10.21577/0103-5053.20170237

学科分类：化学（综合）

来源: SciELO

【 摘 要 】

A series of carbon nanotube (CNTs)-supported copper-cobalt catalysts were prepared and investigated in a slurry reactor for their ability to selectively convert syngas into higher carbon number alcohols. The 7.5Cu7.5Co/CNTs catalyst achieved superior selectivity towards the formation of ethanol (30.1%) and C2+ alcohols (57.7%), while the 10Co5Cu/CNTs catalyst exhibited the largest alcohol space-time yield (372.9 mg gcat -1 h-1). However, the pure Cu (15Cu/CNTs) catalyst displayed negligible activity. Cobalt reduction was enhanced in the presence of copper. In addition to the Cu0-Co0 center, Co0-Co2+ also presented dual active sites for higher alcohols synthesis, the Co2+ site could terminate carbon chain growth to produce alcohols. The ratio of Cu/Co considerably influences the metal particle properties-synergistically effecting the active species.

【 授权许可】

CC BY