Oxygen permeation properties and the stability of La0.6Sr0.4Fe0.8Co0.2O3 studied by Raman spectroscopy

被引：29

作者：

Iguchi, Fumitada ^{[1
]}

Sata, Noriko ^{[1
]}

Yugami, Hiroo ^{[1
]}

Takamura, Hitoshi ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

SOLID STATE IONICS | 2006年 / 177卷 / 26-32期

关键词：

partial oxidation; mixed ionic electronic conductor (MIEC); oxygen permeation properties; perovskite type oxides;

D O I：

10.1016/j.ssi.2006.07.025

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A partial oxidation test was performed using a La0.6Sr0.4Fe0.8CO0.2O3 (LSFCO6482) membrane in the surface limited conditions at a temperature range of 800-920 degrees C and in a syngas side atmosphere of CH4 diluted with Ar (100%, 25.6% and 1%) in order to investigate chemical stability and oxygen permeation properties. On the surface, deposited carbon was observed in the test and it was revealed to be graphite by an insitu Raman measurement. It was combusted by oxygen fed through the membrane. Segregation of the membrane on both surfaces was observed in all specimens after the test. Moreover, significant decomposition occurred on Air side surface of the membrane which tested in a syngas side atmosphere of 25.6% and 100%. However, the significant decomposition did not affect to be oxygen permeation properties, but it did affect its mechanical strength. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：2281 / 2284

页数：4

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