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Centrifugal Casting of Tubular Perovskite Membranes

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Dense tubular membranes were produced by centrifugal casting of an aqueous suspension, containing powder particles of the mixed-conducting perovskite La0.5Sr0.5CoO3− and a dispersant. The resulting green bodies were dried and sintered to produce tubes with a maximum length of 12 cm, having a relative density higher than 92%. The particle morphology, the amount of dispersant and its burnout appeared to influence the quality of the final product. Oxygen permeation measurements were conducted in the temperature range 850°–950°C in Air/He gradients. Results were found to be consistent with data reported for disk-type membranes.
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Document Type: Research Article

Affiliations: Inorganic Materials Science, Department of Science and Technology, University of Twente, and MESA Research Institute for Nanotechnology, Enschede, 7500 AE, The Netherlands

Publication date: November 1, 2005

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