环加成
催化作用
溶剂
化学
氧化环己烯
环氧丙烷
环氧化物
苯乙烯氧化物
碳酸丙烯酯
选择性
环氧氯丙烷
苯乙烯
吸附
氧化物
化学工程
高分子化学
有机化学
环氧乙烷
聚合物
共聚物
物理化学
电极
工程类
电化学
作者
Minghui Zhou,Jinliang Chen,Zhengyan Qu,Yan Du,Jiuxuan Zhang,Hong Jiang,Rizhi Chen
标识
DOI:10.1016/j.seppur.2023.124120
摘要
The cycloaddition of CO2 with epoxides is an important strategy to reach the goal of carbon neutral, at the same time high-value-added products can be obtained. The integration of Lewis acidic and alkaline sites makes ZIFs potential catalysts for the CO2 cycloaddition. Herein, through simply adjusting the water proportion in the synthesis solvent, a series of ZIF materials were prepared and applied in the CO2 cycloaddition. The transitional ZIF-(80)-Co combines the advantages of two-dimensional and three-dimensional ZIFs, namely the two-dimensional morphology, well-developed porous structures, higher CO2 adsorption capacity, and rich acidic/alkaline sites. The outstanding microstructures and surface properties of ZIF-(80)-Co contribute to its superior catalytic performance for the CO2 cycloaddition, and an epichlorohydrin (ECH) conversion of 96.9 % and a cyclic carbonate selectivity of 98 % are achieved without solvent and co-catalyst. Importantly, the cycloaddition of CO2 with ECH over ZIF-(80)-Co is faster than most of the reported ZIFs in literature. Furthermore, ZIF-(80)-Co also exhibits excellent catalytic performance in the CO2 cycloaddition with epoxy butane, allyl glycidyl ether, cyclohexene oxide and styrene oxide.
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