Journal
CATALYSIS TODAY
Volume 200, Issue -, Pages 117-124Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cattod.2012.10.001
Keywords
CO2; 1,2,4-Triazole; Ionic liquid; SBA-15; Cyclic carbonate
Funding
- National Basic Research Program of China (973 Program) [2009CB219901]
- National Natural Science Foundation of China [21003129, 21006117]
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A series of molecular sieve SBA-15 supported 1,2,4-triazolium-based ionic liquids (TRILs) were synthesized and employed as efficient catalysts for the synthesis of cyclic carbonates from CO2 and epoxides. The effects of various parameters, such as functional groups, anions of the catalysts, reaction temperature, pressure, reaction time, and the amount of catalyst used, on the reaction were investigated systematically. In addition, the catalyst can be easily recovered by filtration and reused over six times without loss of catalytic activity. It was found that high yield (80-99%) and excellent selectivity (97-99%) of cyclic carbonates could be achieved at mild conditions (2.0 MPa, 110 degrees C and 2 h) without additional organic solvents or co-catalysts. (C) 2012 Elsevier B.V. All rights reserved.
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