High performance perovskite hollow fibres for oxygen separation

Leo, A, Smart, S, Liu, S and Diniz da Costa, JC (2011) High performance perovskite hollow fibres for oxygen separation. Journal of Membrane Science, 368 1-2: 64-68. doi:10.1016/j.memsci.2010.11.002


Author Leo, A
Smart, S
Liu, S
Diniz da Costa, JC
Title High performance perovskite hollow fibres for oxygen separation
Journal name Journal of Membrane Science   Check publisher's open access policy
ISSN 0376-7388
Publication date 2011-02-15
Year available 2010
Sub-type Article (original research)
DOI 10.1016/j.memsci.2010.11.002
Volume 368
Issue 1-2
Start page 64
End page 68
Total pages 5
Place of publication The Nethelands
Publisher Elsevier BV
Collection year 2011
Language eng
Formatted abstract
Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) hollow fibres are very attractive to deliver high oxygen fluxes at low manufacturing costs. These membranes efficiently separate oxygen from air via ionic diffusion, and have been exclusively prepared with sulphur containing binders, a vital ingredient to aggregate ceramic particles to shape hollow fibre geometries. Here we show that the choice of binder influences the stoichiometry of the crystal structure with the formation of non-ionic conduction domains, ultimately affecting oxygen ionic diffusion. Our synthesis method used sulphur free binders for the preparation of BSCF hollow fibres, resulting in an oxygen flux increase of 105% to 9.5mlmin-1cm-2 at 950°C. In addition, catalytic surface modification of the BSCF hollow fibres further increased oxygen fluxes to 14.5mlmin-1cm-2. More importantly, oxygen fluxes significantly increased by a factor of 10 below 700°C, thus reducing operating temperature requirements by 250°C. © 2010 Elsevier B.V.
Keyword Perovskite
Hollow fibres
Sulphur free binder
High oxygen flux
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2011 Collection
 
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Created: Sun, 27 Feb 2011, 00:05:41 EST