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Tuning Anion-Functionalized Ionic Liquids for Improved SO2 Capture


  • This work was supported by the National Natural Science Foundation of China (21176205, 20976151, and 20990221), the Zhejiang Provincial Natural Science Foundation of China (LR12B06002), the Program for Zhejiang Leading Team of S&T innovation (2011R50007), and the Fundamental Research Funds of the Central Universities.


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You can have your cake and eat it too: A “dual-tuning” strategy for improving the capture of SO2 was developed by introducing electron-withdrawing sites on the anions to produce several kinds of functionalized ionic liquids. Those functionalized with a halogen group exhibited improved performance over their non-halogenated counterparts, leading to highly efficient and reversible capture.