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Centrifugal Casting of Tubular Perovskite Membranes
Author(s) -
Mertins Frédéric H. B.,
Kruidhof Henk,
Bouwmeester Henny J. M.
Publication year - 2005
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2005.00548.x
Subject(s) - dispersant , membrane , materials science , tape casting , perovskite (structure) , suspension (topology) , casting , aqueous solution , chemical engineering , permeation , slurry , particle (ecology) , particle size , rheology , composite material , mineralogy , chemistry , dispersion (optics) , biochemistry , geology , physics , mathematics , oceanography , homotopy , pure mathematics , optics , engineering
Dense tubular membranes were produced by centrifugal casting of an aqueous suspension, containing powder particles of the mixed‐conducting perovskite La 0.5 Sr 0.5 CoO 3−δ 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.