Combustion synthesis, annealing, and oxygen permeation properties of SrFeCo0.5Oy membranes

被引:24
作者
Deng, ZQ
Liu, W
Peng, DK
Chen, CS [1 ]
Yang, WS
机构
[1] Univ Sci & Technol China, Dept Mat Sci & Engn, Lab Adv Funct Mat & Devices, Hefei 230026, Anhui, Peoples R China
[2] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
基金
中国国家自然科学基金;
关键词
D O I
10.1016/j.materresbull.2004.03.016
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Perovskite phase dominant SrFeCo0.5Oy ceramic membranes were made from powders prepared by a glycine-nitrate combustion process (GNP). The sample sintered at 1150 degreesC consisted of perovskite and spinel phase. The grain size of the sintered sample increased remarkably with the calcination temperature of the starting powder. The phase composition of a coarse-grained sample remained almost unchanged after annealing at 900 degreesC in air, whereas, annealing of a fine-grained sample resulted in the formation of an intergrowth oxide as a dominant phase. In comparison with solid state reaction (SSR) and sol-gel derived membranes, the GNP-derived membrane exhibited greater oxygen permeability, which could be attributed to the oxygen-deficient perovskite phase that is highly permeable to oxygen. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码:963 / 969
页数:7
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