Plasma-Driven Water Assisted CO^sub 2^ Methanation

By the application of pulsed corona discharges in a carbon dioxide atmosphere over a water film, the formation of methane has been observed under mild reaction conditions, without the application of a dedicated catalyst. Methane is proposed to result from hydrogenation of carbon monoxide and possibl...

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Bibliographic Details
Published in:IEEE transactions on plasma science 2015-06, Vol.43 (6), p.1954
Main Authors: Hoeben, WFLM, van Heesch, EJM, Beckers, FJCM, Boekhoven, W, Pemen, AJM
Format: Article
Language:English
Subjects:
Carbon dioxide
Corona
Discharge
Hydrogenation
Methane
Plasma
Online Access:Get full text
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Summary:By the application of pulsed corona discharges in a carbon dioxide atmosphere over a water film, the formation of methane has been observed under mild reaction conditions, without the application of a dedicated catalyst. Methane is proposed to result from hydrogenation of carbon monoxide and possibly also carbon dioxide at the NiCr alloy high-voltage electrodes, the precursors being formed by plasma-induced decomposition of carbon dioxide and water. Applying energy densities up to 46 kJ/L has yielded methane levels of approximately 440 ppm at a production efficiency of 398 pmol/J. The observed plasma chemistry occurs at ambient pressure, while gas phase heat is cooled away by the water film, the latter being thermally nearly unaffected.
ISSN:0093-3813
1939-9375