Imidazolium-Based Deep Eutectic Solvents Catalyzed Cycloaddition Reaction of Epoxide with CO2 in Simulated Flue Gas

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2025-09-17 DOI:10.1007/s10562-025-05174-7

Jie Zhou, Wen-Wang Yu, Xiang-Guang Meng, Wen Li, Dan-Dan Chu

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Abstract

The development of catalytic systems capable of in situ capturing carbon dioxide (CO₂) from flue gas under ambient pressure and subsequently converting it into high-value chemicals holds significant practical importance for reducing atmospheric CO₂ levels and advancing the chemical industry. In this study, deep eutectic solvents (DESs) composed of an imidazolium salt and 3-aminobenzyl alcohol were synthesized and employed to catalyze the cycloaddition of CO₂ from simulated flue gas (15% CO₂ + 85% N₂) with epoxides. This catalytic system exhibited excellent catalytic activity, the yield of cyclic carbonate reached up to 94.3% upon reacting under simulated flue gas conditions at 55 °C and 1 atm for 24 h. The effects of temperature, reaction time and catalyst dosage on catalytic efficiency were investigated. The scope of various epoxides was also explored. Furthermore, the catalytic system is readily recyclable, maintaining nearly consistent catalytic activity over five cycles. The catalytic mechanism was clarified via FT-IR and NMR spectroscopic analyses, and a plausible cycloaddition reaction pathway was proposed.

Graphical Abstract

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咪唑基深共晶溶剂在模拟烟气中催化环氧化物与CO2的环加成反应

开发能够在环境压力下从烟气中就地捕获二氧化碳（CO2）并随后将其转化为高价值化学品的催化系统，对于降低大气CO2水平和推进化学工业具有重要的实际意义。本研究合成了由咪唑盐和3-氨基苯甲醇组成的深度共晶溶剂（DESs），并用于催化模拟烟气（15% CO2 + 85% N2）与环氧化物的环加成反应。该催化体系表现出优异的催化活性，在55℃、1atm的模拟烟气条件下反应24 h，循环碳酸盐收率可达94.3%。研究了温度、反应时间和催化剂用量对催化效率的影响。探讨了各种环氧化物的适用范围。此外，催化系统易于回收，在五个循环中保持几乎一致的催化活性。通过傅里叶变换红外光谱（FT-IR）和核磁共振光谱（NMR）分析阐明了催化机理，提出了一种合理的环加成反应途径。图形抽象

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来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

期刊介绍： Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.