Significant improvement of the oxygen permeation flux of tubular Ba0.5Sr0.5Co0.8Fe0.2O3-δ membranes covered by a thin La0.6Sr0.4Ti0.3Fe0.7O3-δ layer

被引：16
|
作者：
Kim, Jong Pyo [2 ]
Park, Jung Hoon [1 ]
Magnone, Edoardo [1 ]
Lee, Yongtaek [2 ]
机构：
[1] Korea Inst Energy Res, Greenhouse Gas Res Ctr, Climate Change Technol Res Div, Taejon 305343, South Korea
[2] Chungnam Natl Univ, Dept Chem Engn, Taejon 305764, South Korea
来源：
MATERIALS LETTERS | 2011年 / 65卷 / 14期
关键词：
Ceramics; Perovskite; Membrane; Thin films; Oxygen permeation; TRANSPORT-PROPERTIES; STABILITY; TI;
D O I：
10.1016/j.matlet.2011.04.031
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present a new method to improve the oxygen flux properties and stability of Ba0.5Sr0.5Co0.8Fe0.2O3-delta tube membrane using a thin layer of La0.6Sr0.4Ti0.3Fe0.7O3-delta as protective coatings. The first relevant result is that the La0.6Sr0.4Ti0.3Fe0.7O3-delta protective layer had an extraordinary positive effect on improving the oxygen permeation flux of the tubular Ba0.5Sr0.5Co0.8Fe0.2O3-delta membranes. La0.6Sr0.4Ti0.3Fe0.7O3-delta-coated Ba0.5Sr0.5Co0.8Fe0.2O3-delta tubular membrane showed the highest oxygen permeability with the flux reaching similar to 3 ml cm(-2)min(-1) (oxygen purity >99%) at 950 degrees C in static atmospheric pressure through a 1.0 mm thick membrane. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：2168 / 2170
页数：3
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