Journal
JOURNAL OF CO2 UTILIZATION
Volume 6, Issue -, Pages 1-6Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jcou.2014.01.004
Keywords
Protic ionic liquids; Carbon dioxide; Epoxide; Cyclic carbonate
Funding
- Chinese National Sciences Foundation [21006021]
- Foundation for Youth Science and Technology Innovation Talents of Harbin of China [RC2013LX018002]
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An efficient, inexpensive, easily prepared and sustainable catalytic system of protic ionic liquids was developed for cycloaddition of CO2 and epoxides to produce cyclic carbonates without using any co-catalyst and organic solvent. The effects of the acidity and structure of protic ionic liquid on the catalytic performance were investigated and the various reaction conditions were optimized. Notably, this catalyst was used for five times at least without appreciable loss of catalytic activity and applied for various epoxide for synthesis of corresponding cyclic carbonate in high selectivity and yield. Additionally, a mechanism for the synergistic effects of cation and anion in protic ionic liquids was also proposed. (C) 2014 Elsevier Ltd. All rights reserved.
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