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

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.

Bibliographic Details

Main Authors:	Wang,Peng, Du,Xihua, Zhuang,Wenchang, Cai,Keying, Li,Jing, Xu,Yan, Zhou,Yingmei, Sun,Kai, Chen,Shuyao, Li,Xiaoli, Tan,Yisheng
Format:	Digital revista
Language:	English
Published:	Sociedade Brasileira de Química 2018
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532018000701373
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