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High‐Performance Polymers for Membrane CO 2 /N 2 Separation
Author(s) -
Liu Junyi,
Hou Xianda,
Park Ho Bum,
Lin Haiqing
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201603002
Subject(s) - polymer , ethylene oxide , gas separation , flue gas , materials science , chemical engineering , selectivity , solubility , polymer architecture , membrane , polymer chemistry , organic chemistry , chemistry , copolymer , composite material , catalysis , biochemistry , engineering
This Concept examines strategies to design advanced polymers with high CO 2 permeability and high CO 2 /N 2 selectivity, which are the key to the success of membrane technology for CO 2 capture from fossil fuel‐fired power plants. Specifically, polymers with enhanced CO 2 solubility and thus CO 2 /N 2 selectivity are designed by incorporating CO 2 ‐philic groups in polymers such as poly(ethylene oxide)‐containing polymers and poly(ionic liquids); polymers with enhanced CO 2 diffusivity and thus CO 2 permeability are designed with contorted rigid polymer chains to obtain high free volume, such as polymers with intrinsic microporosity and thermally rearranged polymers. The underlying rationales for materials design are discussed and polymers with promising CO 2 /N 2 separation properties for CO 2 capture from flue gas are highlighted.