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

Wang, Peng, Du, Xihua, Zhuang, Wenchang, Cai, Keying, Li, Jing, Xu, Yan, Zhou, Yingmei, Sun, Kai, Chen, Shuyao, Li, Xiaoli, Tan, Yisheng

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

AUTOR(ES)

Wang, Peng, Du, Xihua, Zhuang, Wenchang, Cai, Keying, Li, Jing, Xu, Yan, Zhou, Yingmei, Sun, Kai, Chen, Shuyao, Li, Xiaoli, Tan, Yisheng

FONTE

J. Braz. Chem. Soc.

DATA DE PUBLICAÇÃO

2018-07

RESUMO

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.