Oxygen permeation properties of ceria-ferrite-based composites

H. Takamura, K. Okumura, Y. Koshino, A. Kamegawa, M. Okada

研究成果: Article査読

48 被引用数 (Scopus)

抄録

The oxygen flux density of Ce0.8Gd0.2O 1.9-x vol% MnFe2O4 (CGO-xMFO) composite-type ceramics membranes has been investigated. The samples and reforming catalysts were prepared by the Pechini process. For the CGO-xMFO composites, oxygen permeation was observed even at x = 3 vol%, presumably due to the presence of grain boundary phases. For CGO-15MFO, the n-type electronic conductivity was found to be dominant at 900°C or higher. The thickness dependence of jO 2 revealed that surface exchange kinetics was significantly involved in the case of the membrane thickness of L < 0.5 mm. The highest oxygen flux density of 10 μ mol·cm-2·s-1 was achieved for CGO-15MFO with the 10 mass% Ni-Pr:CeO2 catalyst (L = 0.25 mm) at 1000°C and a flow rate of 270 sccm.

本文言語English
ページ(範囲)613-618
ページ数6
ジャーナルJournal of Electroceramics
13
1-3
DOI
出版ステータスPublished - 2004 7

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • 凝縮系物理学
  • 材料力学
  • 電子工学および電気工学
  • 材料化学

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