A Study of Carbonate Synthesis from CO2 in Combustion Exhaust Gas

Abstract Low-concentration CO 2 contained in combustion exhaust gas was successfully fixated in cyclic carbonate without separation or purification. This allowed the effective recycling of CO 2 that would be discharged into the air. A mixed gas simulating the composition of combustion exhaust gas was bubbled through a solution containing an epoxy compound and a catalyst under atmospheric pressure and at 100C. CO 2 -fixated cyclic carbonate was obtained in 72% GC yield with reference to the epoxy compound. When a dewatered simulant gas was used to carry out the reaction under the same conditions, the GC yield of cyclic carbonate improved to 80%.