CO 2 Separation by Imide/Imine Organic Cages.

Authors :: La Cognata S
Mobili R
Milanese C
Boiocchi M
Gaboardi M
Armentano D
Jansen JC
Monteleone M
Antonangelo AR
Carta M
Amendola V
Source :: Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2022 Sep 01; Vol. 28 (49), pp. e202201631. Date of Electronic Publication: 2022 Jul 25.
Publication Year :: 2022
Abstract: Two novel imide/imine-based organic cages have been prepared and studied as materials for the selective separation of CO <subscript>2</subscript> from N <subscript>2</subscript> and CH <subscript>4</subscript> under vacuum swing adsorption conditions. Gas adsorption on the new compounds showed selectivity for CO <subscript>2</subscript> over N <subscript>2</subscript> and CH <subscript>4</subscript> . 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 <subscript>2</subscript> were achieved compared to the neat polymer membranes.<br /> (© 2022 The Authors. Chemistry - A European Journal published by Wiley-VCH GmbH.)