Further performance improvement of Ba(0.5)Sr(0.5)Co(0.8)Fe(0.2)O(3-delta) perovskite membranes for air separation

Chen, Zhihao, Ran, Ran, Shao, Zongping, Yu, Hai, Diniz da Costa, J.C. and Liu, Shaomin (2009) Further performance improvement of Ba(0.5)Sr(0.5)Co(0.8)Fe(0.2)O(3-delta) perovskite membranes for air separation. Ceramics International, 35 6: 2455-2461. doi:10.1016/j.ceramint.2009.02.015


Author Chen, Zhihao
Ran, Ran
Shao, Zongping
Yu, Hai
Diniz da Costa, J.C.
Liu, Shaomin
Title Further performance improvement of Ba(0.5)Sr(0.5)Co(0.8)Fe(0.2)O(3-delta) perovskite membranes for air separation
Formatted title
Further performance improvement of Ba0.5Sr0.5Co0.8Fe0.2O3-δ perovskite membranes for air separation
Journal name Ceramics International   Check publisher's open access policy
ISSN 0272-8842
1873-3956
Publication date 2009-08-01
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.ceramint.2009.02.015
Open Access Status
Volume 35
Issue 6
Start page 2455
End page 2461
Total pages 7
Editor P. Vincenzini
Place of publication East Park, Kidlington, Oxford, U.K.
Publisher Pergamon
Language eng
Subject C1
859802 Management of Greenhouse Gas Emissions from Electricity Generation
090404 Membrane and Separation Technologies
Formatted abstract
Perovskite Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF) is a promising mixed conducting ceramic membrane material for air separation. In this work, BSCF powder was synthesized by a modified Pechini sol–gel technique at relatively lower temperature. The O2 permeation through a series of BSCF membranes has been tested at different temperatures and various O2 partial pressure gradients. Theoretical investigation indicated that bulk diffusion and the O2 exchange reactions on membrane surfaces jointly controlled the O2 permeation through BSCF membranes with thickness of between 1.1 and 0.75 mm. To further improve the O2 fluxes, effective efforts are made on membrane thickness reduction and surface modification by spraying porous BSCF layers on both surfaces. When the membrane thickness was reduced from 0.75 to 0.40 mm, the O2 fluxes were increased by 20–60% depending on the operating conditions. The surface modification further improved the O2 flux by another 20–40%. The high O2 fluxes achieved in this work are quite encouraging with a maximum value reaching 6.0 mL min−1 cm−2 at 900 °C.
Keyword D. perovskites
Oxygen permeation
Mixed conduction
Surface modification
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID 21576135
13KJA430004

T2011170
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Chemical Engineering Publications
ERA 2012 Admin Only
 
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Created: Thu, 03 Sep 2009, 17:54:25 EST by Mr Andrew Martlew on behalf of School of Chemical Engineering