Hydroxy acid-functionalized ionic liquids as green alternatives for the efficient catalytic conversion of epoxides to cyclic carbonates under solvent and co-catalyst-free conditions,Catalysis Science & Technology

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Hydroxy acid-functionalized ionic liquids as green alternatives for the efficient catalytic conversion of epoxides to cyclic carbonates under solvent and co-catalyst-free conditions
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2021-09-20 , DOI: 10.1039/d1cy01128f
Shuang Yue ₁ , Hongliu Qu ₁ , Xinxin Song ₁ , Shuliang Zang ₂ , Guichun Deng ₂

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An innovative, efficient, experimentally simple and environmentally friendly synthesis route of cyclic carbonates from carbon dioxide and epoxide applying novel hydroxy acid-functionalized ionic liquids as efficient catalysts under solvent and co-catalyst-free conditions has been developed. These hydroxy acid-functionalized ionic liquids exhibit outstanding catalytic activity for the conversion of CO₂ and various epoxides to cyclic carbonates. The effects of reaction parameters (amount of catalyst, CO₂ pressure, reaction time and temperature) on the catalytic activity for chloropropene carbonate synthesis from epichlorohydrin and CO₂ are examined and optimized. The catalysts could be reused for at least seven times without any noticeable loss of selectivity and activity. The activation energy was determined to be 66.9 kJ mol⁻¹. Finally, a possible reaction mechanism is proposed.

中文翻译：

羟基酸官能化离子液体作为绿色替代品，用于在无溶剂和无助催化剂条件下将环氧化物有效催化转化为环状碳酸酯

开发了一种创新、高效、实验简单且环境友好的环状碳酸酯合成路线，在无溶剂和无助催化剂的条件下，应用新型羟基酸官能化离子液体作为有效催化剂。这些羟基酸官能化的离子液体在将 CO ₂和各种环氧化物转化为环状碳酸酯方面表现出出色的催化活性。反应参数（催化剂用量、CO ₂压力、反应时间和温度）对环氧氯丙烷与CO ₂合成碳酸氯丙烯的催化活性的影响被检查和优化。催化剂可以重复使用至少七次，而没有任何明显的选择性和活性损失。活化能经测定为66.9 kJ mol ^-1。最后，提出了可能的反应机理。

更新日期：2021-09-20

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