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Composite oxygen transport membrane

United States Patent

November 8, 2016
View the Complete Patent 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) and a doped zirconia. Preferred materials are (La.sub.0.8Sr.sub.0.2) for the porous fuel oxidation layer, (La.sub.0.8Sr.sub.0.2) for the dense separation layer, and (La.sub.0.8Sr.sub.0.2) 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 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.