Journal
IEEE TRANSACTIONS ON PLASMA SCIENCE
Volume 43, Issue 6, Pages 1954-1958Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPS.2015.2429316
Keywords
Chemistry; corona; plasma applications; plasma devices
Categories
Funding
- Dutch Technology Foundation
- Innovatiegericht Onderzoeksprogramma Elektromagnetische Vermogenstechniek
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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.
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