Reaction and oxygen permeation studies in Sm0.4Ba 0.6Fe0.8Co0.2O3 - δ membrane reactor for partial oxidation of methane to syngas

Masayuki Ikeguchi, Tomohiro Mimura, Yasushi Sekine, Eiichi Kikuchi, Masahiko Matsukata

    Research output: Contribution to journalArticle

    69 Citations (Scopus)

    Abstract

    A disk-type Sm0.4Ba0.6Co0.2Fe 0.8O3 - δ perovskite-type mixed-conducting membrane was applied to a membrane reactor for the partial oxidation of methane to syngas (CO + H2). The reaction was carried out using Rh (1 wt%)/MgO catalyst by feeding CH4 diluted with Ar. While CH4 conversion increased and CO selectivity slightly decreased with increasing temperature, a high level of CH4 conversion (90%) and a high selectivity to CO (98%) were observed at 1173 K. The oxygen flux was increased under the conditions for the catalytic partial oxidation of CH4 compared with that measured when Ar was fed to the permeation side. We investigated the reaction pathways in the membrane reactor using different membrane reactor configurations and different kinds of gas. In the membrane reactor without the catalyst, the oxygen flux was not improved even when CH 4 was fed to the permeation side, whereas the oxygen flux was enhanced when CO or H2 was fed. It is implied that the oxidation of CO and H2 with the surface oxygen on the permeation side improves the oxygen flux through the membrane, and that CO2 and H 2O react with CH4 by reforming reactions to form syngas.

    Original languageEnglish
    Pages (from-to)212-220
    Number of pages9
    JournalApplied Catalysis A: General
    Volume290
    Issue number1-2
    DOIs
    Publication statusPublished - 2005 Aug 18

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    Methane
    Permeation
    Carbon Monoxide
    Oxygen
    Membranes
    Oxidation
    Fluxes
    Catalysts
    Reforming reactions
    Perovskite
    Gases

    ASJC Scopus subject areas

    • Catalysis
    • Process Chemistry and Technology

    Cite this

    Reaction and oxygen permeation studies in Sm0.4Ba 0.6Fe0.8Co0.2O3 - δ membrane reactor for partial oxidation of methane to syngas. / Ikeguchi, Masayuki; Mimura, Tomohiro; Sekine, Yasushi; Kikuchi, Eiichi; Matsukata, Masahiko.

    In: Applied Catalysis A: General, Vol. 290, No. 1-2, 18.08.2005, p. 212-220.

    Research output: Contribution to journalArticle

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    AU - Sekine, Yasushi

    AU - Kikuchi, Eiichi

    AU - Matsukata, Masahiko

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