Journal
JOURNAL OF CO2 UTILIZATION
Volume 36, Issue -, Pages 169-176Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jcou.2019.11.003
Keywords
Porous ionic copolymer; Cycloaddition; Diluted CO2; Cyclic carbonate
Funding
- National Natural Science Foundations of China [21566011, 31570560]
- Natural Science Foundation of Jiangxi Province [20192ACBL20025]
- Jiangxi Province Sponsored Programs for Distinguished Young Scholars [20162BCB23026]
- Science & Technology Programs of Jiangxi Province Department of Education [GJJ160272]
- Foundation of State Key Laboratory of Coal Combustion [FSKLCCA1809]
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It is believed that porous heterogeneous materials with excellent properties are promising candidates for efficient fixation of diluted and waste CO2. Herein, a family of mesoporous porous ionic copolymers (PIPs) was designed and prepared from the copolymerization of divinylbenzene (DVB) with vinyl-functionalized ionic liquids monomers through free radical copolymerization process. It was demonstrated that the heterogeneous PIP poly(divinylbenzene-l-allyl-tetramethylguanidinium bromide) PDVB-[AlTMG]Br-0.2 showed excellent activities in facile cycloaddition of CO2 into cyclic carbonates without using any external co-catalysts or metal additives. The results of characterizations and quantum mechanical calculations further showed that the specic hierarchical meso-macroporous structure of PDVB-[AlTMG]Br-0.2 offered the strongest binding interaction with SO and besides had a relatively good CO2 affinity, which results to the best cataltic activity for cycloaddition of CO2. Moreover, PDVB-[AlTM]Br-0.2 exhibited high activities and good reusability in cycloaddition of 15 % diluted CO2 with various epoxides. It is believed that our work would have a great potential in energy-effective fixation of industrial combustion CO2 into high-value organic carbonates.
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