Permeation of hexane isomers through an MFI membrane

Takaaki Matsufuji, Kensuke Watanabe, Norikazu Nishiyama, Yasuyuki Egashira, Masahiko Matsukata, Korekazu Ueyama*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)


The pervaporation tests for n-hexane, 2-methylpentane (2-MP), and 2,3- dimethylbutane (2,3-DMB) were performed using an MFI-type zeolitic membrane at 303 K. In the unary systems, those fluxes followed the order n-hexane >> monobranched hexane (2-MP), > dibranched hexane (2,3-DMB). The ideal selectivities of n-hexane/2-MP and n-hexane/2,3-DMB were 37 and 50, respectively, n-Hexane preferentially permeated in the measurements of a binary mixture of n-hexane/2-MP and n-hexane/2,3-DMB. The feed composition dependence in separating n-hexane/2,3-DMB binary mixtures was studied. The separation factor for the 50/50 n-hexane/2,3-DMB mixture exceeded 120, which was much greater than 54 in the 50/50 n-hexane/2-MP system. When the feed concentration of n-hexane was 10 mol %, the separation factor α(n- hexane/2,3-DMB) at the steady state was as high as 270. n-Hexane effectively inhibited the permeation of 2,3-DMB, even when the concentration of n-hexane was very small.

Original languageEnglish
Pages (from-to)2434-2438
Number of pages5
JournalIndustrial and Engineering Chemistry Research
Issue number7
Publication statusPublished - 2000

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering


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