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AssigneeUop LLC
InventorsChunqing Liu, Jeffrey J. Chiou, Stephen T. Wilson
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The present invention is for novel high performance cross-linkable and cross-linked mixed matrix membranes and the use of such membranes for separations such as for CO2/CH4, H2/CH4 and propylene/propane separations. More specifically, the invention involves the preparation of cross-linkable and cross-linked mixed matrix membranes (MMMs). The cross-linkable MMMs were prepared by incorporating microporous molecular sieves or soluble high surface area microporous polymers (PIMs) as dispersed microporous fillers into a continuous cross-linkable polymer matrix. The cross-linked MMMs were prepared by UV-cross-linking the cross-linkable MMMs containing cross-linkable polymer matrix such as BP-55 polyimide. Pure gas permeation test results demonstrated that both types of MMMs exhibited higher performance for CO2/CH4 and H2/CH4 separations than those of the corresponding cross-linkable and cross-linked pure polymer matrices.
A process for separating at least one gas from a mixture of gases, the process comprising:
A mixed matrix membrane comprising a UV-cross-linkable or UV-cross-linked continuous phase organic polymer and a microporous material dispersed in said cross-linkable or cross-linked continuous phase organic polymer wherein said microporous polymer material consists essentially of organic macromolecules comprised of first generally planar species connected by rigid linkers predominantly to a maximum of two other said first species, said rigid linkers having a point of contortion such that two adjacent first planar species connected by the linker are held in non-coplanar orientation.
A method of making a mixed matrix membrane comprising:
Dependencies are inferred from the claim text.