Capturing CO 2 from large stationary sources, such as coal-burning power plants, has been proposed to limit the rise of average global temperature. Currently, however, it is not economically feasible to implement CO 2 capture facilities in power plants due to their high energy consumption. In this regard, the development of efficient and cost-effective CO 2 adsorbents is still an urgent requirement. We report a series of novel amine-containing solid materials prepared by synthesizing porous organic copolymers, labeled PBTP-( x ), by copolymerization of 1,3,5-trichlorobenzyl and 4,4′-bis(chloromethyl) biphenyl, and subsequently decorating the PBTP-( x ) with alkylamines via a one-step postsynthetic grafting. Among the samples synthesized, PBTP-(1:4)-DETA displays a promising combination of high CO 2 adsorption capacity, large CO 2 selectivity over N 2, and fast sorption kinetics. Furthermore, it not only retains a high CO 2 /N 2 separation performance but also has outstanding stability under repeated adsorption–desorption cycling in the presence of water vapor under dynamic flow conditions, implying its potential application to postcombustion CO 2 capture.
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Yang et al. (2021) studied this question.