Frontiers of Chemical Science and Engineering >
Polyethylene glycol-supported ionic liquid as a highly efficient catalyst for the synthesis of propylene carbonate under mild conditions
Received date: 10 Jan 2012
Accepted date: 16 Mar 2012
Published date: 05 Sep 2012
Copyright
The coupling reaction of propylene and CO2 to form propylene carbonate (PC) was promoted by an ionic liquid (IL) covalently bound to polyethylene glycol (PEG). The supported ionic liquid, which has both acidic and basic components, proved to be an active catalyst for PC synthesis under mild conditions. The effects of different cations and anions, reaction temperature, CO2 pressure, and reaction time were investigated. It was demonstrated that the acid group in the catalyst plays an important role in the reaction. With this system, a high PC yield (95%) was achieved under mild conditions (3.0 MPa, 120°C and 4 h) without a co-solvent. In addition, the catalyst was readily recovered and reused. Based on the experimental results, a plausible mechanism for the catalyst was proposed.
Rui YAO , Hua WANG , Jinyu HAN . Polyethylene glycol-supported ionic liquid as a highly efficient catalyst for the synthesis of propylene carbonate under mild conditions[J]. Frontiers of Chemical Science and Engineering, 2012 , 6(3) : 239 -245 . DOI: 10.1007/s11705-012-1297-y
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