| abstract |
The invention provides a method for synthesizing cyclic carbonate ester by catalyzing amine salt ionic liquid, which takes carbon dioxide and epoxy compound as substrates and prepares the cyclic carbonate ester under the conditions that the reaction pressure is 0.1-0.5MPa, the temperature is 30-60 ℃ and the reaction time is 1-10 hours. The catalyst used in the reaction is an acid-base reaction product, namely an amine salt ionic liquid, and the ionic liquid is favored mainly because of the advantages of easy preparation, low cost of raw materials, environmental protection, high catalyst activity and the like. It is noted that under the rather mild condition of 50 ℃, the yield of the cyclic carbonate can reach more than 99% by adding a small amount of ionic liquid catalyst. |