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Metalloporphyrin Polymers with Intercalated Ionic Liquids for Synergistic CO2 Fixation via Cyclic Carbonate Production
ACS Sustainable Chemistry & Engineering ( IF 8.4 ) Pub Date : 2017-11-15 00:00:00 , DOI: 10.1021/acssuschemeng.7b03371
Yaju Chen 1 , Rongchang Luo 1 , Qihang Xu 1 , Jun Jiang 1 , Xiantai Zhou 2 , Hongbing Ji 1
Affiliation  

Multifunctionalization of organic polymers for acting synergistically on substrate is of wide interest in the field of modern catalysis, but it is still a significant challenge. Herein, two novel bifunctional polymers were first designed and synthesized by combining ionic liquids (ILs) with zinc(II) porphyrin through simple and reversible Schiff base reactions. The fabricated polymers with flexible structures and nitrogen-rich environments presented high affinity toward CO2 molecules at ambient conditions. Owing to the cooperative nature of intercalated ILs and Lewis acidic metal sites, these materials could serve as efficient heterogeneous catalysts for the insertion of CO2 into epoxides to produce cyclic carbonates. As expected, these polymers exhibited good catalytic performance, robust constancy, excellent recyclability, and good substrate expansibility for this reaction in the absence of cocatalyst under mild or even ambient conditions. Notably, the selected catalyst SYSU-Zn@IL2 could directly convert diluted CO2 (15% CO2 in N2) into cyclic carbonate at 80 °C and 3.0 MPa, further offering the great application potential for recycling real-world carbon resource.

中文翻译:

金属卟啉聚合物与离子液体间的插入,通过循环碳酸盐生产来固定CO 2的协同作用

用于协同作用于底物上的有机聚合物的多官能化在现代催化领域中受到广泛关注,但它仍然是一个重大挑战。本文中,通过简单且可逆的席夫碱反应,将离子液体(ILs)与卟啉锌(II)结合,首先设计和合成了两种新型的双功能聚合物。具有柔性结构和富氮环境的制造的聚合物在环境条件下表现出对CO 2分子的高亲和力。由于插层离子液体和路易斯酸性金属位点的协作性质,这些材料可以用作插入CO 2的高效多相催化剂形成环氧化物,生成环状碳酸酯。如所预期的,在温和甚至环境条件下,在没有助催化剂的情况下,这些聚合物在该反应中显示出良好的催化性能,稳定的稳定性,出色的可循环性和良好的底物扩展性。值得注意的是,所选择的催化剂SYSU-Zn @ IL2可以在80°C和3.0 MPa的压力下将稀释的CO 2(N 2中的15%CO 2)直接转化为环状碳酸酯,进一步为循环利用现实世界的碳资源提供了巨大的应用潜力。
更新日期:2017-11-16
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