Atmospheric-pressure synthesis of glycerol carbonate from CO2 and glycerol catalyzed by protic ionic liquids,Green Chemistry

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Atmospheric-pressure synthesis of glycerol carbonate from CO2 and glycerol catalyzed by protic ionic liquids
Green Chemistry ( IF 9.3 ) Pub Date : 2022-08-11 , DOI: 10.1039/d2gc02674k
Cong Luo ₁ , Jiayi Wang ₂ , Houfang Lu _{1,

3} , Kejing Wu ₁ , Yingying Liu ₁ , Yingming Zhu ₁ , Binshen Wang ₁ , Bin Liang _{1,

3}

Affiliation

An ideal strategy for the management of greenhouse gas carbon dioxide (CO₂) and surplus industrial product-glycerol (Gly) is to convert them into the valuable glycerol carbonate (GC). However, conventional conversion processes rely on high CO₂ pressure and reaction temperature. In this work, a series of easily prepared protic ionic liquids (ILs) were studied for the one-pot synthesis of GC using CO₂, Gly, and styrene oxide (SO). A 94% yield of GC was obtained with the catalysis of 1,8-diazabicyclo[5.4.0]undec-7-enenium iodide (HDBUI) under atmospheric pressure at 45 °C. Experimental results and density functional theory (DFT) calculations suggest that the high catalytic activity of HDBUI is attributed to the strong nucleophilicity and substrate activation afforded by the synergistic effect of the protic HDBU⁺ cation and I⁻ anion. In addition, high GC yields were also obtained when simulated flue gas and crude Gly were used as substrates.

中文翻译：

质子离子液体催化CO2和甘油常压合成碳酸甘油酯

管理温室气体二氧化碳 (CO ₂ ) 和剩余工业产品甘油 (Gly) 的理想策略是将它们转化为有价值的碳酸甘油酯 (GC)。然而，传统的转化过程依赖于高CO ₂压力和反应温度。_{在这项工作中，研究了一系列易于制备的质子离子液体 (ILs) 用于使用 CO 2}的一锅法合成气相色谱。、甘氨酸和氧化苯乙烯 (SO)。1,8-二氮杂双环[5.4.0]undec-7-enenium iodide (HDBUI) 在大气压和 45 °C 的催化下获得 94% 的 GC 产率。实验结果和密度泛函理论 (DFT) 计算表明，HDBUI 的高催化活性归因于质子 HDBU ⁺阳离子和 I ^-阴离子的协同作用所提供的强亲核性和底物活化。此外，当使用模拟烟气和粗 Gly 作为底物时，也获得了高 GC 产率。

更新日期：2022-08-16

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