Iso-butanol dehydration by pervaporation using zeolite LTA membranes prepared on 3-aminopropyltriethoxysilane-modified alumina tubes

  • Bingxin Huang
  • , Qian Liu
  • , Jürgen Caro
  • , Aisheng Huang*
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

58 Scopus citations

Abstract

Dense and phase-pure zeolite LTA membranes were hydrothermally synthesized on 3-aminopropyltriethoxysilane (APTES)-modified macroporous Al2O3 tubes without seeding. Pervaporation experiments were conducted for the separation of liquid water/iso-butanol and water/ethanol mixtures to evaluate the separation performances of the zeolite LTA membranes. A water flux of 4.5kg/m2h is obtained at 100°C for the separation of a 95.0wt% iso-butanol/5.0wt% water mixture, and the separation factors of water/iso-butanol are found to be about 3000 for all temperatures and concentrations studied.

Original languageEnglish
Pages (from-to)200-206
Number of pages7
JournalJournal of Membrane Science
Volume455
DOIs
StatePublished - 1 Apr 2014
Externally publishedYes

Keywords

  • Hydrothermal synthesis
  • Pervaporation
  • Water/iso-butanol dehydration
  • Zeolite LTA membrane

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