Yttrium doped BSCF membranes for oxygen separation

Haworth, P., Smart, S., Glasscock, J. and Diniz da Costa, J. C. (2011) Yttrium doped BSCF membranes for oxygen separation. Separation and Purification Technology, 81 1: 88-93. doi:10.1016/j.seppur.2011.07.007

Author Haworth, P.
Smart, S.
Glasscock, J.
Diniz da Costa, J. C.
Title Yttrium doped BSCF membranes for oxygen separation
Journal name Separation and Purification Technology   Check publisher's open access policy
ISSN 1383-5866
Publication date 2011-09
Sub-type Article (original research)
DOI 10.1016/j.seppur.2011.07.007
Volume 81
Issue 1
Start page 88
End page 93
Total pages 6
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Collection year 2012
Language eng
Formatted abstract
This work investigates the partial substitution of yttrium in place of iron in BSCF to form Ba0.5Sr0.5Co0.8Fe 0.2-xYxO3-δ, where x varied between 0 and 0.2. X-ray diffraction patterns showed the formation of a perovskite cubic phase structure up to x = 0.15, whilst the full substitution of yttrium (x = 0.2) for iron resulted in a non-cubic crystal structure that did not exhibit oxygen permeation. The yttrium partial substitution in BSCFY discs (1.2 mm thick) delivered best results for x = 0.025, as oxygen fluxes reached 2.05 ml cm-2 min-1 at 900 °C, an increase of 160% as compared to a blank BSCF (x = 0) membrane. This was attributed to the combined effect of the formation of a greater number of oxygen vacancies, together with improved ion mobility, associated with the beneficial yttrium substitution into the BSCF perovskite structure which stemmed from the crystal lattice expansion.
Keyword BSCF
Oxygen separation
Partial substitution
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 2012 Collection
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Citation counts: TR Web of Science Citation Count  Cited 23 times in Thomson Reuters Web of Science Article | Citations
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Created: Tue, 18 Oct 2011, 10:28:32 EST by Mr Simon Smart on behalf of School of Chemical Engineering