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COMPOSITE MEMBRANES FOR SEPARATION OF GASES

United States Patent Application

20170209838
A1
View the Complete Application at the US Patent & Trademark Office
Membranes, methods of making the membranes, and methods of using the membranes are described herein. The membranes can comprise a gas permeable support layer, an inorganic layer disposed on the support, the inorganic layer comprising a plurality of discreet nanoparticles having an average particle size of less than 1 micron, and a selective polymer layer disposed on the inorganic layer, the selective polymer layer comprising a selective polymer having a CO.sub.2:N.sub.2 selectivity of at least 10 at 57.degree. C. In some embodiments, the membrane can be selectively permeable to an acidic gas. The membranes can be used, for example, to separate gaseous mixtures, such as flue gas.
Ho, W.S. Winston (Columbus, OH), Dutta, Prabir (Worthington, OH), Ramasubramanian, Kartik (Waynesboro, VA), Severance, Michael (Columbus, OH)
15/ 327,832
July 21, 2015
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] This invention was made with Government Support under Grant No. DE-FE0007632 awarded by the U.S. Department of Energy, National Energy Technology Laboratory. The Government has certain rights in the invention.