An efficient method for the synthesis of cyclic carbonates from CO2 and epoxides using an effective two-component catalyst system: Polymer-supported quaternary onium salts and aqueous solutions of metal salts

作者：Siewniak Agnieszka^*; Jasiak Katarzyna; Baj Stefan

来源：Applied Catalysis A: General , 2014, 482: 266-274.

DOI：10.1016/j.apcata.2014.05.033

• Cyclic alkylene carbonates
• Carbon dioxide
• Epoxides
• Polymer-supported quaternary onium salts
• Metal salts

A highly efficient method for the synthesis of cyclic carbonates from carbon dioxide and epoxides in the presence of polymer-supported quaternary onium salts (PS-Q(+)X(-)) and aqueous solution of metal salts under mild conditions, is described. In comparison with conventional homogeneous catalysts, immobilized tributylmethylammonium chloride (PS-TBMAC) is a recyclable, effective catalyst for the studied reaction. The presence of an aqueous solution of zinc iodide as a co-catalyst enhances significantly the catalytic activity of PS-TBMAC. Using this two-component catalyst system (polymer-supported quaternary onium salts and aqueous solution of metal salts), the reaction of CO2 with selected epoxides can be conducted with high product yield (71-91%) and selectivity (97-99%) under mild reaction conditions (temperature 110 degrees C and initial CO2 pressure 0.9 MPa). Propylene carbonate was obtained in the best yield (91%). In addition, the advantages of this method include a short reaction time, solvent-free conditions, and an easy separation of catalyst system.

• 出版日期2014-7-22