Poly(1-trimethylsilyl-1-propyne)/MFI composite membranes for butane separations

M. Woo, Jungkyu Choi, M. Tsapatsis

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The separation of equimolar mixtures of i-butane and n-butane through poly(1-trimethylsilyl-1-propyne)/MFI composite membranes was studied. Membranes were characterized by XRD and SEM. Addition of 50 wt% MFI particles into a PTMSP matrix showed increased permeability and simultaneous improved selectivity in the temperature range 25-200 °C. The best improvement was seen at 150 °C for the composites, giving almost threefold increase in permeability and 56% higher n-butane/i-butane selectivity over the pure polymer. To our knowledge, this is the first successful demonstration of the incorporation of a molecular sieve into a polymer matrix for butane isomer separations. The composite membranes were also tested for separations of n-hexane/2,2-dimethylbutane and p-xylene/o-xylene.

Original languageEnglish
Pages (from-to)330-338
Number of pages9
JournalMicroporous and Mesoporous Materials
Volume110
Issue number2-3
DOIs
Publication statusPublished - 2008 Apr 15
Externally publishedYes

Fingerprint

Composite membranes
Butane
butanes
membranes
composite materials
xylene
Xylene
permeability
selectivity
Molecular sieves
Polymer matrix
Isomers
polymers
absorbents
matrices
Polymers
Hexane
Demonstrations
Membranes
isomers

Keywords

  • Hybrid materials
  • Membranes
  • Permeation properties
  • Poly(1-trimethylsilyl-1-propyne)
  • Zeolites

ASJC Scopus subject areas

  • Catalysis
  • Materials Science(all)

Cite this

Poly(1-trimethylsilyl-1-propyne)/MFI composite membranes for butane separations. / Woo, M.; Choi, Jungkyu; Tsapatsis, M.

In: Microporous and Mesoporous Materials, Vol. 110, No. 2-3, 15.04.2008, p. 330-338.

Research output: Contribution to journalArticle

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