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Fabrication of catalyzed ion transport membrane systems

United States Patent

June 4, 2013
View the Complete Patent at the US Patent & Trademark Office
Process for fabricating a catalyzed ion transport membrane (ITM). In one embodiment, an uncatalyzed ITM is (a) contacted with a non-reducing gaseous stream while heating to a temperature and for a time period sufficient to provide an ITM possessing anion mobility; (b) contacted with a reducing gaseous stream for a time period sufficient to provide an ITM having anion mobility and essentially constant oxygen stoichiometry; (c) cooled while contacting the ITM with the reducing gaseous stream to provide an ITM having essentially constant oxygen stoichiometry and no anion mobility; and (d) treated by applying catalyst to at least one of (1) a porous mixed conducting multicomponent metallic oxide (MCMO) layer contiguous with a first side of a dense layer of MCMO and (2) a second side of the dense MCMO layer. In another embodiment, these steps are carried out in the alternative order of (a), (d), (b), and (c).
Carolan; Michael Francis (Allentown, PA), Kibby; Charles Leonard (Benicia, CA)
Air Products and Chemicals, Inc. (Allentown, PA)
12/ 786,987
May 25, 2010
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made in part with Government support under Cooperative Agreement No. DE-FC26-97FT96052 between Air Products and Chemicals, Inc., and the U.S. Department of Energy. The Government has certain rights to this invention.