Comparative study of the decomposition of CH4 in a nonequilibrium plasma and under high temperature pyrolytic conditions
Kennedy, E.M., Kundu, S.K., Gaikwad, V.V., Molloy, T.S., King, K.M., Stockenhuber, M., Mackie, J.C. and Dlugogorski, B.Z. (2013) Comparative study of the decomposition of CH4 in a nonequilibrium plasma and under high temperature pyrolytic conditions. In: Proceedings of the Australian Combustion Symposium, 6 - 8 November, Perth, Western Australia pp. 214-217.
In this study, the decomposition of methane in a nonequilibrium plasma, where nitrogen and oxygen were excluded from the feed mixture, was investigated. The major product species formed under conditions where the conversion level of methane was relatively high (up to 50 %) were determined. Hydrogen, acetylene, ethylene, ethane and propane were the primary gaseous species identified, and a liquid fraction was detected, which was characterised by 1 H NMR and gel permeation chromatography. The product spectrum formed in the nonequilibrium plasma is compared to the species profile predicted from methane pyrolysis, where the feed composition, residence time and methane conversion levels used in the high temperature pyrolysis simulation matched those in the nonequilibrium plasma experimental reactor.
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