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 |
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ページ(範囲) | 613-618 |
ページ数 | 6 |
ジャーナル | Journal of Electroceramics |
巻 | 13 |
号 | 1-3 |
DOI | |
出版ステータス | Published - 2004 7月 |
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