Journal
JOURNAL OF CO2 UTILIZATION
Volume 58, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jcou.2022.101936
Keywords
Carbon dioxide; Deep eutectic solvents; Acetylcholine bromide; Cycloaddition reaction; Cyclic carbonate
Funding
- Natural Science Special Foundation of Guizhou University
- National Natural Science Foundation of China [22168012]
- Natural Science Foundation of Guizhou Science and Technology Department [2021068]
- Characteristic Field Project of Education Department in Guizhou Province [2021055]
- Cultivation Project of Guizhou University [201955]
- Graduate Education Innovation Project of Guizhou Province [2020044]
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In this study, a series of bio-based deep eutectic solvents (DESs) were synthesized for catalyzing the cycloaddition reaction of CO2 with epoxides. The AcChBr-LMA (2:1) DES, formed by acetylcholine bromide (AcChBr) and L-malic acid (LMA), showed the highest catalytic activity (up to 98% yield) and excellent recyclability under mild conditions. Mechanism studies revealed a synergistic catalytic effect between the hydrogen bond acceptor (HBA) and hydrogen bond donor (HBD).
Fixing CO2 into cyclic carbonates is urgently required under green and eco-friendly conditions. Herein, we synthesized a series of bio-based deep eutectic solvents (DESs) for catalyzing cycloaddition reaction of CO2 with epoxides. Notably, AcChBr-LMA (2:1) formed by acetylcholine bromide (AcChBr) and L-malic acid (LMA) shows the best catalytic activity (up to 98% yield) and excellent recyclability under mild conditions (0.1 MPa CO2 pressure, 80 ? and 2 h). Mechanism studies have shown that there is a synergistic catalytic effect between the hydrogen bond acceptor (HBA) and hydrogen bond donor (HBD).
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