Oxygen permeation properties of BSCF5582 tubular membrane fabricated by the slip casting method

BSCF5582 tubular oxygen separation membranes were prepared using the most cost effective slip casting techniques. The optimum slurry composition was identified and a dense, and crack free 60mm long BSCF5582 tubular membrane being successfully prepared after the programmed sintering process. The effe...

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Bibliographic Details
Published in:Ceramics international 2012-04, Vol.38 (3), p.1867-1872
Main Authors: Choi, M.-B., Lim, D.-K., Jeon, S.-Y., Kim, H.-S., Song, S.-J.
Format: Article
Language:English
Subjects:
A. Slip casting
Chemical potential
E. Membranes
Flow rate
Flux
Ionic conductivity
Membranes
Oxygen
Penetration
Permeation
Slip casting
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Summary:BSCF5582 tubular oxygen separation membranes were prepared using the most cost effective slip casting techniques. The optimum slurry composition was identified and a dense, and crack free 60mm long BSCF5582 tubular membrane being successfully prepared after the programmed sintering process. The effects of the feed flow rate and the sweeping flow rate on the oxygen permeation flux of the tubular BSCF5582 membrane were investigated. The oxygen permeation flux increased with an increase of the oxygen chemical potential gradient to a maximum of 42.5cm3/min in an O2/N2 condition at 1223K for the 1.5mm thick, 60mm long BSCF tube, a value which corresponds to 1.42cm3/mincm2. The ionic conductivity of the oxygen was successfully calculated in the dominant electron conducting regime. The ionic conductivity was found to increase with an increase of the temperature to 900°C, indicating that it is a thermally activated process with an activation energy of 0.70±0.1eV in an air environment.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2011.10.012