Reaction mechanism of methane activation using non-equilibrium pulsed discharge at room temperature

Shigeru Kado, Kohei Urasaki, Yasushi Sekine, Kaoru Fujimoto, Tomohiro Nozaki, Ken Okazaki

    Research output: Contribution to journalArticle

    97 Citations (Scopus)

    Abstract

    The reaction mechanism of methane activation using non-equilibrium pulsed discharge was largely clarified from the emission spectroscopic study and experiments with higher hydrocarbons and some kinds of isotopes. The strong emission of atomic carbon and C2 swan band system was observed as well as H Balmer series emission. This indicates that methane was highly dissociated into C and H by electron impact, which is consistent with the result of high C2D2 composition in produced acetylene when the mixture of CH4 and D2 was fed into discharge region. High electron energy contributed to produce atomic carbon directly from methane, and high electron density promoted the dehydrogenation from CH 3, CH2 and CH to produce atomic carbon consecutively. The reason for the high selectivity to C2H2 was the high concentration of CH or C2 formed from atomic carbon, and the repetition mechanism of decomposition and recombination among C, CH, C 2 and C2H2.

    Original languageEnglish
    Pages (from-to)2291-2297
    Number of pages7
    JournalFuel
    Volume82
    Issue number18
    DOIs
    Publication statusPublished - 2003 Dec 1

    Fingerprint

    Methane
    Carbon
    Chemical activation
    Acetylene
    Temperature
    Electrons
    Dehydrogenation
    Hydrocarbons
    Isotopes
    Carrier concentration
    Decomposition
    Chemical analysis
    Experiments

    Keywords

    • Acetylene
    • Methane dehydrogenation
    • Spark discharge

    ASJC Scopus subject areas

    • Organic Chemistry
    • Energy Engineering and Power Technology
    • Fuel Technology

    Cite this

    Reaction mechanism of methane activation using non-equilibrium pulsed discharge at room temperature. / Kado, Shigeru; Urasaki, Kohei; Sekine, Yasushi; Fujimoto, Kaoru; Nozaki, Tomohiro; Okazaki, Ken.

    In: Fuel, Vol. 82, No. 18, 01.12.2003, p. 2291-2297.

    Research output: Contribution to journalArticle

    Kado, Shigeru ; Urasaki, Kohei ; Sekine, Yasushi ; Fujimoto, Kaoru ; Nozaki, Tomohiro ; Okazaki, Ken. / Reaction mechanism of methane activation using non-equilibrium pulsed discharge at room temperature. In: Fuel. 2003 ; Vol. 82, No. 18. pp. 2291-2297.
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    AU - Urasaki, Kohei

    AU - Sekine, Yasushi

    AU - Fujimoto, Kaoru

    AU - Nozaki, Tomohiro

    AU - Okazaki, Ken

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    KW - Acetylene

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