Preparation and oxygen permeability of Pr-Al-based perovskite-type oxides

H. Takamura, K. Enomoto, Y. Aizumi, A. Kamegawa, M. Okada

Research output: Contribution to journalConference articlepeer-review

25 Citations (Scopus)

Abstract

The preparation and oxygen permeability of Pr0.9AE 0.1Al1-xMxO3 system, where AE=Ca or Sr; M=Co or Fe, have been studied. For Pr0.9Ca0.1Al 1-xFexO3 solid solution having an orthogonal structure, an oxygen flux density of 4.6×10-6 mol cm -2 s-1 was attained for x=0.8 in a methane conversion test at 1000°C, by virtue of the enhancement of p-type conductivity by Fe-doping. In addition, Pr0.9Sr0.1Al0.2Fe 0.8O3 with a membrane thickness of 160 μm exhibited an oxygen flux density of 8.2 × 10-6 mol cm-2 s -1 at 1000°C with the CH4 conversion and CO selectivity of 12% and 93%, respectively.

Original languageEnglish
Pages (from-to)379-382
Number of pages4
JournalSolid State Ionics
Volume175
Issue number1-4
DOIs
Publication statusPublished - 2004 Nov 30
EventFourteenth International Conference on Solid State Ionics - Monterey, CA., United States
Duration: 2003 Jun 222003 Jun 27

Keywords

  • Mixed conductor
  • Oxygen flux density
  • Oxygen permeable membrane
  • Partial oxidation of methane
  • Perovskite-type oxide

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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