环加成
环氧氯丙烷
二乙烯基苯
锌
卟啉
催化作用
共聚物
高分子化学
聚合物
化学
溶剂
吸附
材料科学
有机化学
苯乙烯
作者
Dan Wang,Linjing Ma,Dongping Wang,Wang Ren-he,Ning Wang,Jun Li
标识
DOI:10.1016/j.apcata.2023.119380
摘要
A series of zinc(II) porphyrin-based ionic porous organic polymers [ZnTPyPBr4/DVB(1:m)-iPOP (m = 10, 20, 30, 40)] were synthesized by the free-radical copolymerization of pyridinium–functionalized Zinc(II) porphyrin (ZnTPyPBr4) and divinylbenzene (DVB) through solvothermal method and characterized successfully. The iPOPs had high specific surface areas, relative high CO2 adsorption capacity, abundant dual-function sites (Zn and Br-) and high catalytic efficiency for the cycloaddition reaction of CO2 and epoxides under mild conditions (80 ℃,0.5 MPa CO2). In particular, ZnTPyPBr4/DVB(1:30)-iPOP displayed the highest catalytic activity with a conversion of 99 % for the cycloaddition of CO2 and epichlorohydrin, wide applicability for different epoxides and could be recycled five times with almost no loss of activity. Notably, the kinetic experiments demonstrate that ZnTPyPBr4/DVB(1:30)-iPOP exhibited a low activation energy (22.64 kJ mol−1) for the cycloaddition reaction of CO2 and epichlorohydrin in the absence of solvent and cocatalyst.
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