Novel urea derivative-based ionic liquids with dual-functions: CO2 capture and conversion under metal- and solvent-free conditions
Novel urea derivative-based ionic liquids with dual-functions: CO2 capture and conversion under metal- and solvent-free conditions
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具有双重功能的新型尿素衍生物离子液体：在无金属和无溶剂条件下捕获和转化二氧化碳
DOI：
10.1039/c5gc02605a
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发表时间：
2016-01-01
期刊：
影响因子：
9.8
通讯作者：
Sun, Jianmin
中科院分区：
文献类型：
--
作者：
Liu, Mengshuai;Liang, Lin;Sun, Jianmin
合成了几种热稳定性上级的脲衍生物型离子液体，对其结构进行了分析，并将其应用于温和条件下的CO2捕集和转化。这些UDIL可逆地捕获CO2，具有双摩尔CO2吸收，并在无金属和无溶剂条件下表现出优异的催化活性，用于将CO2和各种环氧化物转化为环状碳酸酯。以环氧丙烷（PO）和二氧化碳（CO2）为原料合成碳酸丙烯酯（PC），考察了反应参数对催化剂活性的影响。由于水不可避免地包含在需要处理的真实的气体中，因此还研究了水对CO2捕获和转化的影响。此外，还进行了反应动力学研究，并提出了阳离子-阴离子协同催化机理。本文报道的单组分、无金属、双功能、稳定且易于回收的离子液体是有趣的材料，显示出良好的CO2捕获和转化性能。
Several urea derivative-based ionic liquids (UDILs) with superior thermal stability were facilely synthesized, structurally analyzed, and applied to CO2 capture and conversion under mild conditions. These UDILs reversibly capture CO2 with double molar CO2 absorption and exhibit outstanding catalytic activity for the conversion of CO2 and various epoxides to cyclic carbonates under metal- and solvent-free conditions. The effects of reaction parameters on the catalytic activity for propylene carbonate (PC) synthesis from propylene oxide (PO) and CO2 were thoroughly investigated. Because water is inevitably contained in real gases requiring treatment, the influence of water on CO2 capture and conversion was also studied. Furthermore, reaction kinetic studies were also undertaken and a cation–anion synergistic catalytic mechanism was proposed. The single-component, metal-free, dual functional, stable, and easily recyclable ionic liquids reported herein are interesting materials, displaying a good performance for both CO2 capture and conversion.