Direct conversion of methane to acetylene or syngas at room temperature using non-equilibrium pulsed discharge

Shigeru Kado, Kohei Urasaki, Yasushi Sekine, Kaoru Fujimoto

    研究成果: Article

    52 引用 (Scopus)

    抄録

    Non-catalytic direct conversion of methane to valuable products was studied using non-equilibrium pulsed discharge under the conditions of ambient temperature and atmospheric pressure. Acetylene was produced with 95% selectivity and 52% methane conversion. An addition of oxygen, carbon dioxide and steam contributed significantly to suppress the carbon deposition and produced carbon monoxide as well as acetylene. Methane conversion increased with an increase in the pulse frequency while the product selectivity remained almost constant. The selectivity depended on the composition of the feed gas. The effect of the partial pressure of oxygen was examined, and it was found that the pulsed discharge would be able to produce synthesis gas by partial oxidation of methane. Carbon monoxide selectivity of 79% with methane conversion of 76% was obtained under the conditions of CH4/O2 = 25/25cm3min-1, gap distance of 10mm and the frequency of 45Hz.

    元の言語English
    ページ(範囲)1377-1385
    ページ数9
    ジャーナルFuel
    82
    発行部数11
    DOI
    出版物ステータスPublished - 2003 7

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    Acetylene
    Methane
    Carbon Monoxide
    Carbon monoxide
    Temperature
    Oxygen
    Synthesis gas
    Steam
    Carbon Dioxide
    Discharge (fluid mechanics)
    Partial pressure
    Atmospheric pressure
    Carbon dioxide
    Carbon
    Gases
    Oxidation
    Chemical analysis

    ASJC Scopus subject areas

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

    これを引用

    Direct conversion of methane to acetylene or syngas at room temperature using non-equilibrium pulsed discharge. / Kado, Shigeru; Urasaki, Kohei; Sekine, Yasushi; Fujimoto, Kaoru.

    :: Fuel, 巻 82, 番号 11, 07.2003, p. 1377-1385.

    研究成果: Article

    Kado, Shigeru ; Urasaki, Kohei ; Sekine, Yasushi ; Fujimoto, Kaoru. / Direct conversion of methane to acetylene or syngas at room temperature using non-equilibrium pulsed discharge. :: Fuel. 2003 ; 巻 82, 番号 11. pp. 1377-1385.
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    title = "Direct conversion of methane to acetylene or syngas at room temperature using non-equilibrium pulsed discharge",
    abstract = "Non-catalytic direct conversion of methane to valuable products was studied using non-equilibrium pulsed discharge under the conditions of ambient temperature and atmospheric pressure. Acetylene was produced with 95{\%} selectivity and 52{\%} methane conversion. An addition of oxygen, carbon dioxide and steam contributed significantly to suppress the carbon deposition and produced carbon monoxide as well as acetylene. Methane conversion increased with an increase in the pulse frequency while the product selectivity remained almost constant. The selectivity depended on the composition of the feed gas. The effect of the partial pressure of oxygen was examined, and it was found that the pulsed discharge would be able to produce synthesis gas by partial oxidation of methane. Carbon monoxide selectivity of 79{\%} with methane conversion of 76{\%} was obtained under the conditions of CH4/O2 = 25/25cm3min-1, gap distance of 10mm and the frequency of 45Hz.",
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    AU - Kado, Shigeru

    AU - Urasaki, Kohei

    AU - Sekine, Yasushi

    AU - Fujimoto, Kaoru

    PY - 2003/7

    Y1 - 2003/7

    N2 - Non-catalytic direct conversion of methane to valuable products was studied using non-equilibrium pulsed discharge under the conditions of ambient temperature and atmospheric pressure. Acetylene was produced with 95% selectivity and 52% methane conversion. An addition of oxygen, carbon dioxide and steam contributed significantly to suppress the carbon deposition and produced carbon monoxide as well as acetylene. Methane conversion increased with an increase in the pulse frequency while the product selectivity remained almost constant. The selectivity depended on the composition of the feed gas. The effect of the partial pressure of oxygen was examined, and it was found that the pulsed discharge would be able to produce synthesis gas by partial oxidation of methane. Carbon monoxide selectivity of 79% with methane conversion of 76% was obtained under the conditions of CH4/O2 = 25/25cm3min-1, gap distance of 10mm and the frequency of 45Hz.

    AB - Non-catalytic direct conversion of methane to valuable products was studied using non-equilibrium pulsed discharge under the conditions of ambient temperature and atmospheric pressure. Acetylene was produced with 95% selectivity and 52% methane conversion. An addition of oxygen, carbon dioxide and steam contributed significantly to suppress the carbon deposition and produced carbon monoxide as well as acetylene. Methane conversion increased with an increase in the pulse frequency while the product selectivity remained almost constant. The selectivity depended on the composition of the feed gas. The effect of the partial pressure of oxygen was examined, and it was found that the pulsed discharge would be able to produce synthesis gas by partial oxidation of methane. Carbon monoxide selectivity of 79% with methane conversion of 76% was obtained under the conditions of CH4/O2 = 25/25cm3min-1, gap distance of 10mm and the frequency of 45Hz.

    KW - Direct dehydrogenative coupling

    KW - Methane

    KW - Non-equilibrium plasma

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