Author/Authors :
Du، نويسنده , , Ya and Wang، نويسنده , , Jinquan and Chen، نويسنده , , Jian-Yu and Cai، نويسنده , , Wen-Fei and Tian، نويسنده , , Jie-Sheng and Kong، نويسنده , , De-Lin and He، نويسنده , , Liang-Nian، نويسنده ,
Abstract :
A PEG-supported quaternary ammonium salt is proved to be an efficient and recyclable homogeneous catalyst for solvent-free synthesis of cyclic carbonates from carbon dioxide and epoxides under supercritical conditions. Supporting Bu4NBr on soluble polymer PEG6000 enhances the catalytic activity. The workup procedure is straightforward, and the catalyst can be reused over five times with no appreciable loss of catalytic activity and selectivity.
Keywords :
supported catalyst , Cyclic carbonate , polyethylene glycol , Homogeneous catalyst recycling , supercritical CO2
