Highly permeable La0.2Ba0.8Co0.8Fe0.2-xZrxO3-δ membranes for oxygen separation

被引：13
|
作者：
Fan, Chuan-Gang [1 ]
Zuo, Yan-Bo
Li, Jian-Tong
Lu, Jun-Qing
Chen, Chu-Sheng
Bae, Dong-Sik
机构：
[1] Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan 243002, Peoples R China
[2] Univ Sci & Technol China, Dept Mat Sci & Engn, Anhua 230026, Peoples R China
[3] Changwon Natl Univ, Sch Nano & Adv Mat Engn, Chang Won 641773, Gyeongnam, South Korea
来源：
SEPARATION AND PURIFICATION TECHNOLOGY | 2007年 / 55卷 / 01期
基金：
新加坡国家研究基金会; 中国国家自然科学基金;
关键词：
membrane materials; oxygen separation; Zr dopant; deposition; perovskite;
D O I：
10.1016/j.seppur.2006.10.012
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A highly oxygen-permeable membrane was produced by substituting Zr for Fe through the solid-state reaction in the nominal La0.2Ba0.8Co0.8Fe0.2O3-delta composition. In the temperature range of 700-1000 degrees C, the La0.2Ba0.8Co0.8Fe0.2-xZrxO3-delta membrane with x = 0.05 had a remarkably high permeation flux because of the oxygen-vacancy-disordered structure of the membrane. For La0.2Ba0.8Co0.8Fe0.2O3-delta and La0.2Ba0.8Co0.8Fe0.175Zr0.025O3-delta, it was believed that the structure of the membranes changed from the oxide vacancy disordered to the ordered at approximately 920 degrees C. For La0.2Ba0.8Co0.8Fe0.15Zr0.05O3-delta, the change took place below 700 degrees C. (c) 2006 Elsevier B.V. All rights reserved.
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页码：35 / 39
页数：5
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