Tuning the Basicity of Cyano‐Containing Ionic Liquids to Improve SO 2  Capture through Cyano–Sulfur Interactions | Zendy

Cui  Guokai | Zendy; Zhang Fengtao | Zendy; Zhou  Xiuyuan | Zendy; Li Haoran | Zendy; Wang Jianji | Zendy; Wang Congmin | Zendy

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Tuning the Basicity of Cyano‐Containing Ionic Liquids to Improve SO 2 Capture through Cyano–Sulfur Interactions

Author(s) -

Cui Guokai,

Zhang Fengtao,

Zhou Xiuyuan,

Li Haoran,

Wang Jianji,

Wang Congmin

Publication year - 2015

Publication title -

chemistry – a european journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.687

H-Index - 242

eISSN - 1521-3765

pISSN - 0947-6539

DOI - 10.1002/chem.201405683

Subject(s) - sulfur , ionic liquid , sorption , chemistry , quantum chemical , fourier transform infrared spectroscopy , inorganic chemistry , process (computing) , computational chemistry , organic chemistry , chemical engineering , molecule , catalysis , adsorption , computer science , engineering , operating system

A new approach has been developed to improve SO 2 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 SO 2 capture. The interaction between these cyano‐containing ILs and SO 2 was investigated by FTIR and NMR methods. Spectroscopic investigations and quantum chemical calculations showed that dramatic effects on SO 2 capacity originate from the basicity of the ILs and enhanced cyano–sulfur interaction. Furthermore, the captured SO 2 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 SO 2 capture.

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