Covalent and electrostatic incorporation of amines into hypercrosslinked polymers for increased CO2 selectivity

Alahmed, A. H., Briggs, M., Cooper, A. I. and Adams, D. J. (2018) Covalent and electrostatic incorporation of amines into hypercrosslinked polymers for increased CO2 selectivity. Journal of Polymer Science Part A: Polymer Chemistry, 56(22), pp. 2513-2521. (doi:10.1002/pola.29228)

Alahmed, A. H., Briggs, M., Cooper, A. I. and Adams, D. J. (2018) Covalent and electrostatic incorporation of amines into hypercrosslinked polymers for increased CO2 selectivity. Journal of Polymer Science Part A: Polymer Chemistry, 56(22), pp. 2513-2521. (doi:10.1002/pola.29228)

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Abstract

Two methods of incorporating functional groups rich in nitrogen into low cost microporous hypercrosslinked polymers (HCPs) have been evaluated and the effects on the carbon dioxide CO2/N2 IAST selectivity were measured. Electrostatic incorporation of an ammonium salt into a sulfonic acid‐containing HCP polymer afforded a static CO2 uptake of 2.5 mmol g−1 with a CO2/N2 IAST selectivity of 42:1 at 1 bar and 298 K. Using column breakthrough measurements with a 15:85 CO2/N2 mixture at 298 K and 1 bar, a selectivity of 17:1 was obtained. However, varying the counterion resulted in polymers with lower CO2/N2 selectivity values. Decoration of the parent polymer with CO2‐philic imidazole followed by electrostatic ammonium salt incorporation blocked some of the micropores reducing the selectivity which re‐emphasizes the role and importance of pore width for CO2/N2 selectivity.

Item Type:Articles
Additional Information:The authors would like to thank Saudi Aramco for funding.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Adams, Dave
Authors: Alahmed, A. H., Briggs, M., Cooper, A. I., and Adams, D. J.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Journal of Polymer Science Part A: Polymer Chemistry
Publisher:Wiley
ISSN:0887-624X
ISSN (Online):1099-0518
Published Online:16 September 2018
Copyright Holders:Copyright © 2018 Wiley Periodicals, Inc.
First Published:First published in Journal of Polymer Science Part A: Polymer Chemistry 56(22): 2513-2521
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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