Investigation on the structure stability and oxygen permeability of titanium-doped perovskite-type oxides of BaTi0.2CoxFe0.8-xO3-δ (x=0.2-0.6)

被引：45
作者：
Tong, JH [1 ]
Yang, WS [1 ]
Cai, R [1 ]
Zhu, BC [1 ]
Xiong, GX [1 ]
Lin, LW [1 ]
机构：
[1] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
来源：
SEPARATION AND PURIFICATION TECHNOLOGY | 2003年 / 32卷 / 1-3期
基金：
中国国家自然科学基金;
关键词：
ceramic membrane; perovskite oxides; titanium; oxygen separation;
D O I：
10.1016/S1383-5866(03)00045-5
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Titanium-doped perovskite-type ceramic oxides of BaTi0.2CoxFe0.8-xO3-delta (x = 0.2-0.6) were synthesized by a combined citrate-EDTA complexing method. The results of XRD, TG-DTA, O-2-TPD and H-2-TPR indicated that the oxide of BaTi0.2Co0.5Fe0.3O3-delta was more stable than other compositions and the famous membrane material of SrCo0.8Fe0.2O3-delta. The oxygen permeation experiments showed that the contents of Co and Fe had a great effect on the oxygen permeability. The oxygen permeation flux of 0.90 ml cm(-2) min(-1) at 950 degreesC under air/He was obtained for the composition of BaTi0.2Co0.5Fe0.3O3-delta. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：289 / 299
页数：11
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