期刊
MATERIALS LETTERS
卷 137, 期 -, 页码 245-248出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2014.09.016
关键词
Ceramic composites; Functional; Oxygen separation; Membrane; Phase inversion
资金
- National Natural Science Foundation of China [21076205, 50972138]
- Fundamental Research Funds for the Central Universities [USTC: WK2320000021]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry [WF2320000005]
- Anhui Provincial Natural Science Foundation [1408085ME85]
- Opening Project of CAS Key Laboratory of Materials for Energy Conversion [KF2014003]
The dual-phase Ce0.9Gd0.1O1.95-La0.5Sr0.4Co0.2Fe0.8O3-delta asymmetric membrane was prepared via a phase-inversion tape-casting method. The membrane consisted of a thicker porous support layer and a thinner dense layer. When the dense side of the membrane was coated with a La0.5Sr0.4CoO3-delta catalytic activation layer, the oxygen permeation flux was markedly increased by a factor of 4.1-5.6, reaching 0.45 mL cm(-2) min(-1) at 900 degrees C. The flux increase can be attributed to enhanced surface oxygen exhange kinetics. (C) 2014 Elsevier B.V. All rights reserved.
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