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CO Separation by Imide/Imine Organic Cages

Abstract

Two novel imide/imine-based organic cages have been prepared and studied as materials for the selective separation of CO from N and CH under vacuum swing adsorption conditions. Gas adsorption on the new compounds showed selectivity for CO over N and CH . The cages were also tested as fillers in mixed-matrix membranes for gas separation. Dense and robust membranes were obtained by loading the cages in either Matrimid® or PEEK-WC polymers. Improved gas-transport properties and selectivity for CO were achieved compared to the neat polymer membranes.

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