Oxygen permeation flux through La1-ySryFeO3 limited by the carbon monoxide oxidation rate

B.A. van Hassel, J.E. ten Elshof, H.J.M. Bouwmeester*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

47 Citations (Scopus)
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Abstract

The oxygen permeation flux through La1-ySryFeO3-δ (y = 0.1, 0.2) in a large oxygen partial pressure gradient (air/CO, CO2 mixture) was found to be limited by the carbon monoxide oxidation rate at the low oxygen partial pressure side of the membrane. The oxygen permeation flux through the membrane was almost independent of its thickness (1 versus 2 mm) and strontium dopant concentration. The deposition of a 50 nm thin porous platinum layer at the low oxygen pressure side of the membrane increased the carbon monoxide oxidation rate and in this way the oxygen permeation flux by a factor 1.8 ± 0.2.
Original languageEnglish
Pages (from-to)279-291
Number of pages13
JournalApplied catalysis A: general
Volume119
Issue number2
DOIs
Publication statusPublished - 1995

Keywords

  • Ambipolar diffusion
  • Carbon monoxide
  • La1-ySryFeO3
  • Oxygen permeation
  • Perovskite
  • Platinum
  • Surface modification

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