Oxygen permeation through dense La0.1Sr0.9Co0.8Fe0.2O3-δ perovskite membranes: Catalytic effect of porous La0.1Sr0.9Co0.8Fe0.2O3-δ layers

被引：8
|
作者：
Jeon, Sang-Yun [1 ]
Im, Ha-Ni [1 ]
Singh, Bhupendra [1 ]
Choi, Mihwa [2 ]
Yoo, Young-Sung [2 ]
Hwang, Jin-Ha [3 ]
Song, Sun-Ju [1 ]
机构：
[1] Chonnam Natl Univ, Sch Mat Sci & Engn, Ion Lab, Gwang Ju 500757, South Korea
[2] Korea Elect Power Res Inst, Green Growth Technol Lab, Taejon 305760, South Korea
[3] Hongik Univ, Dept Mat Sci & Engn, Seoul 121791, South Korea
来源：
CERAMICS INTERNATIONAL | 2015年 / 41卷 / 06期
基金：
新加坡国家研究基金会;
关键词：
Mixed ionic-electronic conducting perovskite-type oxide; Oxygen separation membrane; Permeation; MIXED CONDUCTING LA0.1SR0.9CO0.8FE0.2O3-DELTA; ELECTROCHEMICAL PROPERTIES; ELECTRICAL-PROPERTIES; CHEMICAL EXPANSION; DEFECT STRUCTURE; CATHODES; SEPARATION; OXIDES; LA1-XSRXCO1-YFEYO3; PERMEABILITY;
D O I：
10.1016/j.ceramint.2015.02.064
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The oxygen permeation performance of a number of La0.1Sr0.9Co0.8Fe0.2O3-delta (LSCF1982)-based membranes, consisting of dense LSCF1982 layer with/without porous LSCF1982 layer, was analyzed on the basis of the thickness of the dense layer and catalytic effect of the porous layer. A 0.27 mm thick dense membrane gives oxygen permeation flux (J(O2)) of 2.33 sccm min(-1) cm(-2) at 900 degrees C, which is increased to 3.55 sccm min(-1) cm(-2) on applying a porous layer of LSCF1982 onto the dense membrane. The membrane gives a stable flux for 300 h. The flux was further improved by reducing the thickness of the dense LSCF1982 layer and at 950 degrees C a flux of 4.47 seem min(-1) cm(-2) is obtained with 0.012 mm thick membrane. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：7446 / 7452
页数：7
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