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Activated carbon aerogels supported copper catalysts for the hydrogenation of methyl acetate to ethanol: Effect of KOH activation

Abstract

Methyl acetate (MA) hydrogenation is crucial in the indirect ethanol synthesis through syngas (CO+H2). In our work, activated carbon aerogels supported copper (Cu-ACAs) catalysts have been prepared by a conventional impregnation method. The surface area and functional groups of the ACA soared after KOH activation. The highest surface area of the ACA achieved was 2562 m2g-1. The anchoring effect of micropores and external oxygen-containing groups (OCGs) significantly enhanced the metal-support interaction in catalysts, facilitating the high dispersion of Cu and an enhancement in surface Cu+ species, both of which improved catalytic activity of catalysts. Cu-ACAs-A4 showed the most outstanding catalytic performance, with a MA conversion of 95.2% and an ethanol selectivity of 62.2%, close to the carbon equilibrium selectivity of 66.7%.

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Publication details

The article was received on 19 Mar 2019, accepted on 15 May 2019 and first published on 17 May 2019


Article type: Paper
DOI: 10.1039/C9NJ01434A
New J. Chem., 2019, Accepted Manuscript

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    Activated carbon aerogels supported copper catalysts for the hydrogenation of methyl acetate to ethanol: Effect of KOH activation

    X. Hou, J. zhao, J. Liu, Y. Han, Y. Pei and J. Ren, New J. Chem., 2019, Accepted Manuscript , DOI: 10.1039/C9NJ01434A

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