Abstract
Synthesis of cyclic carbonates by the cycloaddition of CO2 in flue gas offers a promising path to valorize CO2. Here we demonstrate that the PP1,4Br/ZnCl2 catalytic system can efficiently capture CO2 from flue gas and in situ catalyze the cycloaddition reaction to form cyclic carbonates. Under optimized conditions, up to 98% yield of cyclic carbonates is achieved. This catalytic system displays good tolerance to substrates with oxygen- and silicon-based functional groups, and exhibits excellent recyclability and water resistance for potential applications. In addition, the results of scale-up experiments (750 mmol) show that the PP1,4Br/ZnCl2 system has outstanding CO2 capture and conversion ability. The residual content of CO2 in the system after the reaction was 600 ppm, which realizes the integration of CO2 capture and transformation into value-added chemicals.

Keywords Plus：HETEROGENEOUS CATALYSTCHEMICAL FIXATIONIONIC LIQUIDORGANIC POLYMERSHIGHLY EFFICIENTCYCLOADDITIONDIOXIDEEPOXIDESCONVERSIONOXIDES
Published in GREEN CHEMISTRY；Volume25，10.1039/d2gc04757h，MAR 20 2023