A novel phase transition technique for fabrication of mesopore sized ceramic membranes

Bo Wang, Zhentao Wu, A. G. Livingston, K. Li*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A mesopore sized YSZ-SiO2 ceramic hollow fibre membrane has been fabricated using a novel phase transition technique. The N2 or H2 single-gas permeation under relatively high pressure gradients reveals that the YSZ-SiO2 membrane is gas permeable, and the mean pore diameter of the membrane is less than four nanometers. Examination of the microstructure of the membrane shows that the YSZ-SiO2 ceramic is well sintered and is free of packing-pores. By analyzing the phase transition of the SiO2 and the microstructure of the membrane, it is believed that the pores in the membrane for the gas permeation were created by the β → α transition of cristobalite.

Original languageEnglish
Pages (from-to)5-9
Number of pages5
JournalJournal of Membrane Science
Volume339
Issue number1-2
DOIs
Publication statusPublished - 1 Sep 2009

Keywords

  • Ceramic membrane
  • Cristobalite
  • Mesopore
  • Phase transition

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