期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 21, 期 14, 页码 5632-5639出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201405683
关键词
basicity; ionic liquids; sorption; sulfur dioxide; sustainable chemistry
资金
- National Key Basic Research Program of China [2015CB251401]
- National Natural Science Foundation of China [21322602, 21176205, 21403059, J1210042]
- Natural Science Foundation of Henan Province [142300413213]
- Zhejiang Provincial Natural Science Foundation of China [LR12B06002]
- S&T Research Foundation of Education Department of Henan Province [14A150031]
- Program for Zhejiang Leading Team of ST Innovation [2011R50007]
- Fundamental Research Funds of the Central Universities
A new approach has been developed to improve SO2 sorption by cyano-containing ionic liquids (ILs) through tuning the basicity of ILs and cyano-sulfur interaction. Several kinds of cyano-containing ILs with different basicity were designed, prepared, and used for SO2 capture. The interaction between these cyano-containing ILs and SO2 was investigated by FTIR and NMR methods. Spectroscopic investigations and quantum chemical calculations showed that dramatic effects on SO2 capacity originate from the basicity of the ILs and enhanced cyano-sulfur interaction. Furthermore, the captured SO2 was easy to release by heating or bubbling N-2 through the ILs. This efficient and reversible process, achieved by tuning the basicity of ILs, is an excellent alternative to current technologies for SO2 capture.
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