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COMPOSITE OXYGEN TRANSPORT MEMBRANE

United States Patent Application

*** PATENT GRANTED ***
20160001221
9,486,735
A1
View the Complete Application at the US Patent & Trademark Office
A method is described of producing a composite oxygen ion membrane and a composite oxygen ion membrane in which a porous fuel oxidation layer and a dense separation layer and optionally, a porous surface exchange layer are formed on a porous support from mixtures of (Ln.sub.1-xA.sub.x).sub.wCr.sub.1-yB.sub.yO.sub.3-.delta. and a doped zirconia. Preferred materials are (La.sub.0.8Sr.sub.0.2).sub.0.95Cr.sub.0.7Fe.sub.0.3O.sub.3-.delta. for the porous fuel oxidation layer, (La.sub.0.8Sr.sub.0.2).sub.0.95Cr.sub.0.5Fe.sub.0.5O.sub.3-.delta. for the dense separation layer, and (La.sub.0.8Sr.sub.0.2).sub.0.95Cr.sub.0.3Fe.sub.0.7O.sub.3-.delta. for the porous surface exchange layer. Firing the said fuel activation and separation layers in nitrogen atmosphere unexpectedly allows the separation layer to sinter into a fully densified mass.
Lu, Zigui (East Amherst, NY), Plonczak, Pawel J. (Amherst, NY), Lane, Jonathan A. (Snyder, NY)
14/ 856,038
September 16, 2015
GOVERNMENT SUPPORT [0002] This invention was made with Government support under Cooperative Agreement No. DE-FC26-07NT43088, awarded by the United States Department of Energy. The Government has certain rights in this invention.