Highly Efficient and Reversible SO2 Capture by Surfactant-Derived Dual Functionalized Ionic Liquids with Metal Chelate Cations

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• 作者：Fang Ding ; Junjie Zheng ; Yaqian Chen ; Kaihong Chen ; Guokai Cui ; Haoran Li ; Congmin Wang
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：December 3, 2014
• 年：2014
• 卷：53
• 期：48
• 页码：18568-18574
• 全文大小：286K
• ISSN：1520-5045

文摘

A series of dual functionalized ionic liquids with metal chelate cations from surfactant and alkali metal salt were designed, prepared, and used for SO₂ capture. The effect of metal ions, coordination number, anionic structures, temperature, and pressure on SO₂ absorption was investigated. The interaction of these functionalized ionic liquids with SO₂ was explained by spectroscopic investigation. The results showed that these metal-containing ionic liquids exhibited high absorption capacity through a combination of physical and chemical interaction of SO₂ with basic anions and ether-containing cations as well as excellent reversibility (21 recycles). Considering the easy preparation, low cost, and excellent performance, these dual functionalized metal-containing ionic liquids provide significant improvements over traditional ionic liquids, indicating the promise for industrial application in SO₂ capture.