Permeation characteristics of butane isomers through MFI-type zeolitic membranes

Takaaki Matsufuji, Norikazu Nishiyama, Korekazu Ueyama, Masahiko Matsukata

    Research output: Contribution to journalArticle

    27 Citations (Scopus)

    Abstract

    MFI-type◆ zeolitic membranes were prepared by a vapor-phase transport method on porous α-alumina flat disks. Pure or mixed gas permeation measurements of butane isomers were performed at 375 K using two methods: pressure gradient (PG) and concentration gradient (CG) methods. Pure gas permeation measurements of H2, He, CH4, N2, O2, CO2 and SF6 were also carried out using PG method. Counter-diffusion of helium as a sweep gas was evaluated by determining the gas composition at the outlet of the feed side. It was confirmed that the counter-diffusion of helium occurs only when the total pressure of the feed side was <80kPa. In the mixed gas permeation measurements, the value of separation factor depended on the method of gas permeation. The separation factors of n-butane to i-butane were ca. 10 in the PG method and 30-60 in the CG method.

    Original languageEnglish
    Pages (from-to)265-273
    Number of pages9
    JournalCatalysis Today
    Volume56
    Issue number1-3
    Publication statusPublished - 2000 Feb 25

    Fingerprint

    Butane
    Permeation
    Isomers
    Gradient methods
    Gases
    Membranes
    Pressure gradient
    Helium
    Aluminum Oxide
    butane
    Alumina
    Vapors
    Chemical analysis

    Keywords

    • Butane isomers
    • Concentration gradient
    • Pressure gradient
    • Zeolitic membranes

    ASJC Scopus subject areas

    • Catalysis
    • Process Chemistry and Technology

    Cite this

    Permeation characteristics of butane isomers through MFI-type zeolitic membranes. / Matsufuji, Takaaki; Nishiyama, Norikazu; Ueyama, Korekazu; Matsukata, Masahiko.

    In: Catalysis Today, Vol. 56, No. 1-3, 25.02.2000, p. 265-273.

    Research output: Contribution to journalArticle

    Matsufuji, T, Nishiyama, N, Ueyama, K & Matsukata, M 2000, 'Permeation characteristics of butane isomers through MFI-type zeolitic membranes', Catalysis Today, vol. 56, no. 1-3, pp. 265-273.
    Matsufuji, Takaaki ; Nishiyama, Norikazu ; Ueyama, Korekazu ; Matsukata, Masahiko. / Permeation characteristics of butane isomers through MFI-type zeolitic membranes. In: Catalysis Today. 2000 ; Vol. 56, No. 1-3. pp. 265-273.
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