Selectively capturing carbon dioxide from mixed gas streams using a new microporous organic copolymer

• Published in: Microporous and mesoporous materials 2020-10, Vol.305, p.110391, Article 110391
• Main Authors: Alloush, Ahmed M., Abdelnaby, Mahmoud M., Cordova, Kyle E., Qasem, Naef A.A., Al-Maythalony, Bassem A., Jalilov, Almaz, Mankour, Youcef, Al Hamouz, Othman Charles S.
• Format: Article
• Language: English
• Subjects: Carbon capture and sequestration; Gas separation; Microporous organic polymers; Polymer chemistry
• ISSN: 1387-1811; 1873-3093
• DOI: 10.1016/j.micromeso.2020.110391

A novel crosslinked microporous polymer was synthesized via a modified acid-catalyzed Friedel-Crafts polycondensation reaction. By virtue of the rigid and polarizable monomers (aniline and pyrrole), the polymer, termed KFUPM-4, was proven permanently porous (Brunauer-Emmett-Teller surface area = 650 m2 g−1) with a high CO2 capacity (33 cm3 g−1 at 760 Torr and 298 K) and selectivity (CO2:CH4 selectivity = 15:1 at 298 K). As a result of these properties, KFUPM-4 was subjected to breakthrough measurements, whereby the material's ability to selectively capture CO2 under dynamic conditions from both dry and wet mixed gas streams was clearly demonstrated. [Display omitted] •A new highly rigid crosslinked porous polymer termed KFUPM-4 for CO2 capture.•KFUPM-4 exhibited a high selectivity toward CO2 in comparison to CH4.•KFUPM-4 showed stability and enhanced CO2 uptake in the presence of water.