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The impact of sulfur contamination on the performance of La_0.6Sr_0.4Co_0.2Fe_0.8O₃ (-) _δ oxygen transport membranes

Lookup NU author(s): Yousef Alqaheem, Dr Alan Thursfield, Dr Guangru Zhang, Professor Ian MetcalfeORCiD

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).

Abstract

An oxygen transport membrane made from La0.6Sr0.4Co0.2Fe0.8O3 (-) (delta) (LSCF6428) has been tested for air separation by oxygen permeation at 900 degrees C with the introduction of sulfur in the form of hydrogen sulfide. 200 ppm of hydrogen sulfide was fed either in the sweep-side (argon-side) or the air-side. The membrane was exposed to hydrogen sulfide for 100 h. Results show that the presence of hydrogen sulfide negatively influenced the oxygen permeation due to the formation of strontium sulfate blocking the oxygen permeation pathway. When the hydrogen sulfide was removed from the system, the oxygen permeation was partially restored in the case of argon-side contamination, while being fully restored in the case of air-side contamination. (C) 2014 Elsevier B.V. All rights reserved.

Publication metadata

Author(s): Alqaheem Y, Thursfield A, Zhang GR, Metcalfe IS

Publication type: Article

Publication status: Published

Journal: Solid State Ionics

Year: 2014

Volume: 262

Pages: 262-265

Print publication date: 01/09/2014

Online publication date: 18/01/2014

Acceptance date: 04/01/2014

Date deposited: 23/10/2014

ISSN (print): 0167-2738

ISSN (electronic): 1872-7689

Publisher: Elsevier

URL: http://dx.doi.org/10.1016/j.ssi.2014.01.011

DOI: 10.1016/j.ssi.2014.01.011

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