SrCo0.9Sc0.1O3-δ perovskite hollow fibre membranes for air separation at intermediate temperatures

被引：58
作者：
Meng, Bo [1 ]
Wang, Zhigang [1 ]
Tan, Xiaoyao [1 ]
Liu, Shaomin [2 ]
机构：
[1] Shandong Univ Technol, Sch Chem Engn, Zibo 255049, Peoples R China
[2] Curtin Univ Technol, Dept Chem Engn, Perth, WA 6845, Australia
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2009年 / 29卷 / 13期
基金：
澳大利亚研究理事会; 中国国家自然科学基金; 国家高技术研究发展计划(863计划);
关键词：
Hollow fibre; Perovskite membrane; Oxygen permeation; Air separation; Intermediate temperature; OXYGEN PERMEATION; CERAMIC MEMBRANES; PERMEABILITY; STABILITY; OXIDES; PERFORMANCE;
D O I：
10.1016/j.jeurceramsoc.2009.03.035
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：
SrCo0.9Sc0.1O3 (SCSc) perovskite powders with sub-micron particle size were synthesized by a modified Pechini method combined with a post-treatment of sintering and ball-milling. From the prepared powders, the SCSc hollow fibre membranes with asymmetric structure and gas-tight property were fabricated by spinning a polymer solution containing 58.4 wt% SCSc followed by sintering at 1200 degrees C for 5 h. The oxygen permeation properties of the obtained SCSc fibres were measured under air/He gradients at 500-800 degrees C. This showed the oxygen flux of 1 mL cm(-2) min(-1) at 750 degrees C and 4.41 mL cm(-2) min(-1) at 900 degrees C. Modeling analysis reveals that the oxygen permeation process is predominated by oxygen surface exchange kinetics with an activation energy of 95.0 kJ mol(-1). The SCSc membranes showed excellent oxygen permeation performance while exhibiting high structural and permeating stability at intermediate temperatures (500-800 degrees C). (C) 2009 Elsevier Ltd. All rights reserved.
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页码：2815 / 2822
页数：8
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