An efficient morpholinium ionic liquid based catalyst system for cycloaddition of CO2 and epoxides under mild conditions

In recent decades, global warming has affected human society greatly and drawn worldwide attention. CO2 chemical fixation was proved to be a promising methodology in slowing down the warming process, but efforts are still needed to make it more effective and green. Here in, we reported a binary cata...

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Bibliographic Details
Published in:Journal of molecular liquids 2019-06, Vol.283, p.235-241
Main Authors: Shang, Yuhan, Gong, Qing, Zheng, Mai, Zhang, Haibo, Zhou, Xiaohai
Format: Article
Language:English
Subjects:
CO2 fixation
Kinetics
Mechanism
Morpholinium ionic liquids
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Summary:In recent decades, global warming has affected human society greatly and drawn worldwide attention. CO2 chemical fixation was proved to be a promising methodology in slowing down the warming process, but efforts are still needed to make it more effective and green. Here in, we reported a binary catalyst system composed of morpholinium ionic liquids and zinc bromide. This catalyst could turn CO2 and epoxides into corresponding carbonates quantitatively under extremely mild conditions (R.T., atmospheric CO2 pressure). Since it was environmentally benign and could reduce the carbon footprint, this catalyst would make the cycloaddition reaction a more reliable artificial carbon sink. •An efficient morpholinium ionic liquid/zinc bromide catalyst system is developed for CO2 fixation.•The kinetic study is carried out within the temperature range of 293 to 363 K.•The reaction system is analyzed with NMR and mass spectroscopy.•A possible mechanism is proposed.
ISSN:0167-7322
1873-3166
DOI:10.1016/j.molliq.2019.03.089