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Issue 4, 2021

One-step plasma-enabled catalytic carbon dioxide hydrogenation to higher hydrocarbons: significance of catalyst-bed configuration

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Abstract

Effectively converting CO2 into fuels and value-added chemicals remains a major challenge in catalysis, especially under mild conditions. In this study, we report a one-step plasma-enabled catalytic process for CO2 hydrogenation to C2+ hydrocarbons operated at low temperature and atmospheric pressure in a dielectric barrier discharge (DBD) packed-bed reactor. Plasma without catalyst produces mainly CO (over 80% selectivity), while CH4 becomes the main product when plasma is coupled with the alumina-supported Co catalyst. Interestingly, by simply changing the catalyst-bed configuration within the plasma discharge zone, more C2+ hydrocarbons are selectively produced. High C2+ hydrocarbons selectivity of 46% at ca. 74% CO2 conversion is achieved when operated at the furnace temperature of 25 °C and 10 W DBD plasma. The possible origin of C2+ formation and the significance of catalyst-bed configuration are discussed.

Graphical abstract: One-step plasma-enabled catalytic carbon dioxide hydrogenation to higher hydrocarbons: significance of catalyst-bed configuration

Supplementary files

Article information


Submitted
08 Nov 2020
Accepted
10 Feb 2021
First published
10 Feb 2021

Green Chem., 2021,23, 1642-1647
Article type
Communication

One-step plasma-enabled catalytic carbon dioxide hydrogenation to higher hydrocarbons: significance of catalyst-bed configuration

J. Wang, M. S. AlQahtani, X. Wang, S. D. Knecht, S. G. Bilén, C. Song and W. Chu, Green Chem., 2021, 23, 1642 DOI: 10.1039/D0GC03779F

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