Composite membranes for separation of gases

Patent · 21 June 2022

OSTI ID:1893050

Ho, W. S. Winston; Dutta, Prabir; Ramasubramanian, Kartik; Severance, Michael

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 CO2:N2 selectivity of at least 10 at 57° 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.

• Research Organization: Ohio State Univ., Columbus, OH (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: FE0007632
• Assignee: Ohio State Innovation Foundation (Columbus, OH)
• Patent Number(s): 11,364,471
• Application Number: 16/443,182
• OSTI ID: 1893050
• Country of Publication: United States
• Language: English