Open-Pore Two-Dimensional MFI Zeolite Nanosheets for the Fabrication of Hydrocarbon-Isomer-Selective Membranes on Porous Polymer Supports

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Zhang H., Xiao Q., Guo X., Li N., Kumar P., Rangnekar N., ...More

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, vol.55, no.25, pp.7184-7187, 2016 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 55 Issue: 25
  • Publication Date: 2016
  • Doi Number: 10.1002/anie.201601135
  • Journal Name: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.7184-7187
  • Keywords: membranes, nanosheets, separation, zeolites, GRAPHENE OXIDE MEMBRANES, LIQUID EXFOLIATION, LAYERED MATERIALS, THICKNESS, HYBRID
  • Ankara University Affiliated: Yes

Abstract

Two-dimensional zeolite nanosheets that do not contain any organic structure-directing agents were prepared from a multilamellar MFI (ML-MFI) zeolite. ML-MFI was first exfoliated by melt compounding and then detemplated by treatment with a mixture of H2SO4 and H2O2 (piranha solution). The obtained OSDA-free MFI nanosheets disperse well in water and can be used for coating applications. Deposits made on porous polybenzimidazole (PBI) supports by simple filtration of these suspensions exhibit an n-butane/isobutane selectivity of 5.4, with an n-butane permeance of 3.5 x 10(-7) mol m(-2) s(-1) Pa-1 (ca. 1000 GPU).