无溶剂法合成碳酸环己烯酯的研究

Study on the Solvent-Free Method for Synthesizing Cyclohexene Carbonate

在大孔聚苯乙烯-二乙烯苯交联树脂(PS)上接枝金属卤化物做为催化剂,以二氧化碳和环氧环己烷为原料及季铵盐为助催化剂,在无溶剂条件下合成了碳酸环己烯酯,考察了催化剂用量和反应压力、温度、反应时间、搅拌速度对反应的影响.结果显示:在以季铵盐为助催化剂、温度为120℃、初始压力为4.5 MPa、转速为300 r/min的条件下反应6 h,碳酸环己烯酯的产率达96%以上,催化剂使用5次产物产率没有明显变化,得出PS接枝金属卤化物催化剂具有良好的催化活性.

Using macroporous polystyrene divinylbenzene cross-linked resin（PS） grafted metal halide as catalyst and using CO2 with cyclohexene oxide as materials have successfully synthesized cyclohexene carbonates in the condition of quaternary ammonium salt and solvent-free.The factors influencing the reaction were studied,such as dose of catalysts,reaction pressure,reaction temperature,reaction time as well as revolving speed.The results show that the yield of cyclohexene carbonates could reached 96% under the following conditions,using quaternary ammonium salt as co-catalysts,120 ℃,initial pressure of 4.5 MPa,revolving speed of 300 r/min,6 h.The activity of the catalyst had not decreased obviously after being used for 5 times,so PS grafted metal halide has good catalytic activity.