期刊
AUSTRALIAN JOURNAL OF CHEMISTRY
卷 71, 期 6, 页码 407-415出版社
CSIRO PUBLISHING
DOI: 10.1071/CH17656
关键词
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资金
- National Science Foundation of China [21101084]
- Scientific Fund of Liaoning Province Education Department [LQN201710]
- Collaborative Innovation Centre of Applicative Technology of Clean Energy Resources in Fujian Province [2016-71]
- Liaoning Provincial Department of Education Innovation Team Projects [LT2015012]
Various amino-functional ionic liquids were developed as homogeneous catalysts for the cycloaddition of carbon dioxide to different epoxides yielding the corresponding cyclic carbonates under metal- and solvent-free conditions. The effects of reaction temperature, reaction time, CO2 pressure, and the amount of catalyst on the cycloaddition reaction were investigated. The catalysts could be easily recovered after the reaction and then reused at least eight times without noticeable loss of activity and selectivity. Reaction kinetic studies were undertaken, the reaction was apparently first order with respect to the concentration of epoxide and catalyst. Furthermore, the rate constants were determined over a temperature range of 100-130 degrees C and the activation energy was determined to be 45.9 kJ mol(-1). Finally, a possible reaction mechanism was proposed. The amino-functional ionic liquids showed the advantage of high catalytic activity and were easily recyclable for CO2 chemical fixation into valuable chemicals.
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