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Conversion of CO2by non- thermal inductively-coupled plasma catalysis

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CO $ _2 $ decomposition is a very strongly endothermic reaction where very high temperatures are required to thermally dissociate CO $ _2 $ . Radio frequency inductively-coupled plasma enables… Click to show full abstract

CO $ _2 $ decomposition is a very strongly endothermic reaction where very high temperatures are required to thermally dissociate CO $ _2 $ . Radio frequency inductively-coupled plasma enables to selectively activate and dissociate CO $ _2 $ at room temperature. Tuning the flow rate and the frequency of the radio frequency inductively-coupled plasma gives high yields of CO under mild conditions. Finally the discovery of a plasma catalytic effect has been demonstrated for CO $ _2 $ dissociation that shows a significant increase of the CO yield by metallic meshes. The metallic meshes become catalysts under exposure to plasma to activate the recombination reaction of atomic O to yield O $ _2 $ , thereby reducing the reaction to convert CO back to CO $ _2 $ . Inductively-coupled hybrid plasma catalysis allows access to study and to utilize high CO $ _2 $ conversion in a non-thermal plasma regime. This advance offers opportunities to investigate the possibility to use radio frequency inductively-coupled plasma to store superfluous renewable electricity into high-valuable CO in time where the price of renewable electricity is plunging.

Keywords: coupled plasma; frequency; non thermal; plasma catalysis; inductively coupled

Journal Title: Chinese Journal of Chemical Physics
Year Published: 2020

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