Journal of the Brazilian Chemical Society | |
Carbon Nanotube-Supported Copper-Cobalt Catalyst for the Production of Higher Carbon Number Alcohols through Carbon Monoxide Hydrogenation | |
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
【 预 览 】
Files | Size | Format | View |
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RO201910257232458ZK.pdf | 4987KB | download |