Solid state synthesis of SrFeCo0.5Ox asymmetric membranes for oxygen separation

Masayuki Ikeguchi, Yasukazu Uchida, Yasushi Sekine, Eiichi Kikuchi, Masahiko Matsukata

    研究成果: Article

    1 引用 (Scopus)

    抄録

    SrFeCo0.5Ox asymmetric membranes for oxygen permeation consisting of a thin dense layer and a porous support layer were prepared using a simple method. A given amount of SrFeCo0.5Ox powder was placed in a die, and then a mixture of SrFeCo0.5Ox powder and ethyl cellulose powder was added on top of the SrFeCo0.5Ox powder. The layered powders were pressed into a 13-mm-diameter disk, and calcined at 1423 K. This produced a membrane with a thin dense layer and, through the elimination of the ethyl cellulose, a porous support layer. Oxygen flux through membranes thus produced increased with decreasing dense-layer thickness. The maximum oxygen flux through an asymmetric membrane at 1173 K observed was 0.23 cm3 (STP) cm-2 min-1, which was 2.8 times larger than that through a 0.95-mm-thick symmetric membrane. Oxygen permeation was primarily limited by bulk diffusion in the thin dense layer, although the porous support layer acted to resist oxygen permeation.

    元の言語English
    ページ(範囲)502-508
    ページ数7
    ジャーナルJournal of Chemical Engineering of Japan
    38
    発行部数7
    DOI
    出版物ステータスPublished - 2005

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    Powders
    Oxygen
    Membranes
    Permeation
    Cellulose
    Fluxes
    ethyl cellulose

    ASJC Scopus subject areas

    • Chemical Engineering(all)

    これを引用

    Solid state synthesis of SrFeCo0.5Ox asymmetric membranes for oxygen separation. / Ikeguchi, Masayuki; Uchida, Yasukazu; Sekine, Yasushi; Kikuchi, Eiichi; Matsukata, Masahiko.

    :: Journal of Chemical Engineering of Japan, 巻 38, 番号 7, 2005, p. 502-508.

    研究成果: Article

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    abstract = "SrFeCo0.5Ox asymmetric membranes for oxygen permeation consisting of a thin dense layer and a porous support layer were prepared using a simple method. A given amount of SrFeCo0.5Ox powder was placed in a die, and then a mixture of SrFeCo0.5Ox powder and ethyl cellulose powder was added on top of the SrFeCo0.5Ox powder. The layered powders were pressed into a 13-mm-diameter disk, and calcined at 1423 K. This produced a membrane with a thin dense layer and, through the elimination of the ethyl cellulose, a porous support layer. Oxygen flux through membranes thus produced increased with decreasing dense-layer thickness. The maximum oxygen flux through an asymmetric membrane at 1173 K observed was 0.23 cm3 (STP) cm-2 min-1, which was 2.8 times larger than that through a 0.95-mm-thick symmetric membrane. Oxygen permeation was primarily limited by bulk diffusion in the thin dense layer, although the porous support layer acted to resist oxygen permeation.",
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    author = "Masayuki Ikeguchi and Yasukazu Uchida and Yasushi Sekine and Eiichi Kikuchi and Masahiko Matsukata",
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    AU - Ikeguchi, Masayuki

    AU - Uchida, Yasukazu

    AU - Sekine, Yasushi

    AU - Kikuchi, Eiichi

    AU - Matsukata, Masahiko

    PY - 2005

    Y1 - 2005

    N2 - SrFeCo0.5Ox asymmetric membranes for oxygen permeation consisting of a thin dense layer and a porous support layer were prepared using a simple method. A given amount of SrFeCo0.5Ox powder was placed in a die, and then a mixture of SrFeCo0.5Ox powder and ethyl cellulose powder was added on top of the SrFeCo0.5Ox powder. The layered powders were pressed into a 13-mm-diameter disk, and calcined at 1423 K. This produced a membrane with a thin dense layer and, through the elimination of the ethyl cellulose, a porous support layer. Oxygen flux through membranes thus produced increased with decreasing dense-layer thickness. The maximum oxygen flux through an asymmetric membrane at 1173 K observed was 0.23 cm3 (STP) cm-2 min-1, which was 2.8 times larger than that through a 0.95-mm-thick symmetric membrane. Oxygen permeation was primarily limited by bulk diffusion in the thin dense layer, although the porous support layer acted to resist oxygen permeation.

    AB - SrFeCo0.5Ox asymmetric membranes for oxygen permeation consisting of a thin dense layer and a porous support layer were prepared using a simple method. A given amount of SrFeCo0.5Ox powder was placed in a die, and then a mixture of SrFeCo0.5Ox powder and ethyl cellulose powder was added on top of the SrFeCo0.5Ox powder. The layered powders were pressed into a 13-mm-diameter disk, and calcined at 1423 K. This produced a membrane with a thin dense layer and, through the elimination of the ethyl cellulose, a porous support layer. Oxygen flux through membranes thus produced increased with decreasing dense-layer thickness. The maximum oxygen flux through an asymmetric membrane at 1173 K observed was 0.23 cm3 (STP) cm-2 min-1, which was 2.8 times larger than that through a 0.95-mm-thick symmetric membrane. Oxygen permeation was primarily limited by bulk diffusion in the thin dense layer, although the porous support layer acted to resist oxygen permeation.

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    KW - Ethyl cellulose

    KW - Oxygen permeation

    KW - SrFeCoO

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