Abstract The synthesis of propylene carbonate from carbon dioxide and propylene oxide was studied using three kinds of ionic liquids(［BMIM］Br, ［BMIM］BF4, ［BMIM］PF6) as catalysts. The experimental results showed that ［BMIM］Br, ［BMIM］BF4 perform well and the presence of zinc bromide could improve significantly the conversion of propylene oxide in reaction process. The yield and selectivity of PC could be over 98% and 100% after 1 h, respectively, with 2 mol propylene oxide, 0.25% catalyst of ［BMIM］Br and 0.05% zinc bromide under 1.5 MPa at 120 ℃. The catalyst showed a good catalyzing performance on the above conditions after it was used four times, as the yield of PC was always over 92% and selectivity 100%.
GAO Ge, JIN Hai-Bo.Synthesis of Propylene Carbonate in the Presence of Catalysts of N,N’-Dialkylimidazolium-Based Ionic Liquids[J] Chemcial Industry and Engineering, 2014,V31(1): 14-18
2014, Vol. 31 
