Saikat Mandal, Khushboo S. Paliwal, Antarip Mitra and Venkataramanan Mahalingam
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引用次数: 0
Abstract
The quest for developing heterogeneous catalysts to synthesize cyclic carbonates from epoxides and carbon dioxide (CO2) has attracted the attention of scientists in the past decade. Particularly, it is challenging to prepare cyclic carbonates using CO2 under atmospheric pressure without the use of metal ions, additives, solvents, and halide ion-containing cocatalysts. This work reports the development of a metal- and halide-free porous organic polymer (POP) catalyst for the CO2 fixation reaction. The POP synthesised from terephthaldehyde and 2,4,6-triaminopyrimidine possesses various functional groups (–NH2, –NH, pyridine-N, etc.) that are known to activate epoxides and CO2. The as-prepared POP displays excellent catalytic activity in the conversion of different epoxides to their corresponding cyclic carbonates with significant quantitative yields and selectivity. Additionally, the catalyst displays good recyclability without any noteworthy loss of catalytic activity and structural integrity, signifying its heterogeneous nature.
在过去的十年中,科学家们一直在寻求开发异相催化剂,以环氧化物和二氧化碳(CO2)为原料合成环状碳酸盐。特别是,在不使用金属离子、添加剂、溶剂和含卤离子的助催化剂的情况下,在常压下利用二氧化碳制备环碳酸盐是一项挑战。本研究报告介绍了一种用于二氧化碳固定反应的无金属和卤化物多孔有机聚合物(POP)的开发情况。由对苯二甲醛和 2,4,6-三氨基嘧啶合成的 POP 具有许多官能团(-NH2、-NH、吡啶-N 等),这些官能团可激活环氧化物和二氧化碳。制备的持久性有机污染物在将不同的环氧化物转化为相应的环状碳酸盐方面显示出卓越的催化活性,并具有显著的定量产率和选择性。此外,该催化剂还具有良好的可回收性,催化活性和结构完整性没有任何明显的损失,这表明它具有异构性质。
期刊介绍:
Sustainable Energy & Fuels will publish research that contributes to the development of sustainable energy technologies with a particular emphasis on new and next-generation technologies.