Article

Adsorption

, Volume 12, Issue 5, pp 339-360

MFI zeolite membranes from a- and randomly oriented monolayers

  • Jungkyu ChoiAffiliated withDepartment of Chemical Engineering and Materials Science, University of Minnesota, 151 Amundson Hall
  • , Shubhajit GhoshAffiliated withDepartment of Chemical Engineering and Materials Science, University of Minnesota, 151 Amundson Hall
  • , Lisa KingAffiliated withUOP LLC
  • , Michael TsapatsisAffiliated withDepartment of Chemical Engineering and Materials Science, University of Minnesota, 151 Amundson Hall Email author 

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Abstract

c-Oriented columnar MFI films made by secondary growth of randomly oriented seed monolayers, deposited using sonication-assisted covalent attachment, exhibit n-hexane/2,2-dimethylbutane separation factor of up to 104, n-/i-butane separation factor of up to 50, and p-/o-xylene separation factor of up to 2. A MFI film from a-oriented seed layer shows lower separation factors for the linear vs. branched isomers but higher separation factor for p-/o-xylene.

Keywords

Zeolite MFI Preferred orientation Butane Hexane Xylene Permeation Separation