Olefin Selective Ag-Exchanged X-Type Zeolite Membrane for Propylene/Propane and Ethylene/Ethane Separation

Motomu Sakai, Yasuhito Sasaki, Taisuke Tomono, Masahiro Seshimo, Masahiko Matsukata

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    Propylene/propane and ethylene/ethane separation was examined with Ag-exchanged X-type zeolite membrane (Ag-X membrane). The Na-X membrane was prepared on a porous tubular α-alumina support by a secondary growth method. The resulting Na-X membrane was ion-exchanged by using AgNO3 aq. Olefin selectivities in both mixtures were markedly improved after the ion exchange from Na to Ag cation. The Ag-X membrane exhibited a maximum propylene selectivity of 55.4 with a permeance of 4.13 × 10-8 mol m-2 s-1 Pa-1 at 353 K for a propylene/propane (50:50) mixture. This membrane also exhibited a maximum ethylene selectivity of 15.9 with a permeance of 9.04 × 10-8 mol m-2 s-1 Pa-1 at 303 K for an ethylene/ethane (50:50) mixture. We consider that the strong interaction between olefin and Ag cation plays an important role for the appearance of such high selectivity of olefin.

    Original languageEnglish
    Pages (from-to)4145-4151
    Number of pages7
    JournalACS Applied Materials and Interfaces
    Volume11
    Issue number4
    DOIs
    Publication statusPublished - 2019 Jan 30

    Fingerprint

    Zeolites
    Propane
    Ethane
    Alkenes
    Olefins
    Propylene
    Ethylene
    Membranes
    Cations
    Positive ions
    Aluminum Oxide
    Ion exchange
    Alumina
    ethylene
    propylene
    Ions

    Keywords

    • ethylene
    • FAU
    • gas separation
    • membrane
    • propylene
    • zeolite

    ASJC Scopus subject areas

    • Materials Science(all)

    Cite this

    Olefin Selective Ag-Exchanged X-Type Zeolite Membrane for Propylene/Propane and Ethylene/Ethane Separation. / Sakai, Motomu; Sasaki, Yasuhito; Tomono, Taisuke; Seshimo, Masahiro; Matsukata, Masahiko.

    In: ACS Applied Materials and Interfaces, Vol. 11, No. 4, 30.01.2019, p. 4145-4151.

    Research output: Contribution to journalArticle

    Sakai, Motomu ; Sasaki, Yasuhito ; Tomono, Taisuke ; Seshimo, Masahiro ; Matsukata, Masahiko. / Olefin Selective Ag-Exchanged X-Type Zeolite Membrane for Propylene/Propane and Ethylene/Ethane Separation. In: ACS Applied Materials and Interfaces. 2019 ; Vol. 11, No. 4. pp. 4145-4151.
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    AU - Seshimo, Masahiro

    AU - Matsukata, Masahiko

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