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A CO2-tolerance oxygen permeable 60Ce0.9Gd0.1O2-δ-40Ba0.5Sr0.5Co0.8Fe0.2O3-δ dual phase membrane
被引:96
作者:
Xue, Jian
[1
]
Liao, Qing
[1
]
Wei, Yanying
[1
]
Li, Zhong
[1
]
Wang, Haihui
[1
]
机构:
[1] S China Univ Technol, Sch Chem & Chem Engn, Key Lab Enhanced Heat Transfer & Energy Conservat, Minist Educ, Guangzhou 510640, Guangdong, Peoples R China
关键词:
CO2-tolerance;
Mixed conductor;
Dual phase membrane;
Oxygen separation;
HOLLOW-FIBER MEMBRANES;
EXTERNAL SHORT-CIRCUIT;
CO2;
CAPTURE;
INTERMEDIATE TEMPERATURES;
ELECTRICAL-PROPERTIES;
STRUCTURAL STABILITY;
CERAMIC MEMBRANES;
SURFACE EXCHANGE;
AIR SEPARATION;
PERMEATION;
D O I:
10.1016/j.memsci.2013.04.067
中图分类号:
TQ [化学工业];
学科分类号:
0817 ;
摘要:
A CO2-tolerant dual phase membrane with composition of 60 wt% Ce0.9Gd0.1O2-delta-40 wt% Ba0.5Sr0.5Co0.8Fe0.2O3-delta (60CGO-40BSCF) was successfully developed. The 60CGO-40BSCF dual phase membrane showed good reversibility of the oxygen permeation fluxes and good stability in CO2 atmosphere. A stable oxygen permeation flux of 0.67 mL/min cm(2) was obtained with pure CO2 as the sweep gas during a 250 h oxygen permeation at 950 degrees C. The electronic conductivity results confirmed the concept that the electronic conductivity of the BSCF perovskite oxide could be partly reserved in CO2 atmosphere. Due to the high oxygen permeation fluxes and the good stability in CO2-containing atmosphere, the 60CGO-40BSCF dual phase membrane has great potential application in oxyfuel techniques for CO2 capture and storage. (C) 2013 Elsevier B.V. All rights reserved.
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页码:124 / 130
页数:7
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