Oxygen semipermeable solid oxide membrane composites prepared by electrochemical vapor deposition

Y. S. Lin, K. J. de Vries, H. W. Brinkman, A. J. Burggraaf

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

Ceramic membrane composites consisting of a coarse porous α-alumina or two-layer porous alumina membrane support and an oxygen semipermeable gas tight thin (0.2-5 μm) yttria stabilized zirconia (YSZ) film are prepared by the electrochemical vapor deposition (EVD) method. The minimum gas-tight thickness of the YSZ films depends strongly on the average pore size of the support on which the films are deposited by the EVD process. The oxygen permeation fluxes through such gas tight YSZ membrane composites, measured in situ on the EVD apparatus, are in the range of 3 × 10-9 to 6 × 10-8 mol/cm2-sec with an oxygen partial pressures of P′O2 (high) ≈ 3 × 10-2 atm and P″O2 (low) ≈ 10-5 atm, much larger than the literature data for thicker YSZ pellets. During the oxygen permeation experiments the rate-limiting step is found to be the bulk electrochemical transport in the grown YSZ films with a thickness smaller than 10 μm.

Original languageEnglish (US)
Pages (from-to)211-226
Number of pages16
JournalJournal of Membrane Science
Volume66
Issue number2-3
DOIs
StatePublished - Feb 19 1992
Externally publishedYes

Keywords

  • ceramic membranes
  • electrochemical vapor deposition
  • oxygen permeation
  • solid oxide membrane composites
  • yttria stabilized zirconia

ASJC Scopus subject areas

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

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