Highly efficient and reversible SO2 capture by tunable azole-based ionic liquids through multiple-site chemical absorption

Congmin Wang; Guokai Cui; Xiaoyan Luo; Yingjie Xu; Haoran Li; Sheng Dai

doi:10.1021/ja204808h

Highly efficient and reversible SO₂ capture by tunable azole-based ionic liquids through multiple-site chemical absorption

Congmin Wang, Guokai Cui, Xiaoyan Luo, Yingjie Xu, Haoran Li, Sheng Dai

Chemical Sciences Division

Research output: Contribution to journal › Article › peer-review

371 Scopus citations

Abstract

A novel strategy for SO₂ capture through multiple-site absorption in the anion of several azole-based ionic liquids is reported. An extremely high capacity of SO₂ (>3.5 mol/mol) and excellent reversibility (28 recycles) were achieved by tuning the interaction between the basic anion and acidic SO₂. Spectroscopic investigations and quantum-mechanical calculations showed that such high SO₂ capacity originates from the multiple sites of interaction between the anion and SO ₂. These tunable azole-based ionic liquids with multiple sites offer significant improvements over commonly used absorbents, indicating the promise for industrial applications in acid gas separation.

Original language	English
Pages (from-to)	11916-11919
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	133
Issue number	31
DOIs	https://doi.org/10.1021/ja204808h
State	Published - Aug 10 2011

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title = "Highly efficient and reversible SO2 capture by tunable azole-based ionic liquids through multiple-site chemical absorption",

abstract = "A novel strategy for SO2 capture through multiple-site absorption in the anion of several azole-based ionic liquids is reported. An extremely high capacity of SO2 (>3.5 mol/mol) and excellent reversibility (28 recycles) were achieved by tuning the interaction between the basic anion and acidic SO2. Spectroscopic investigations and quantum-mechanical calculations showed that such high SO2 capacity originates from the multiple sites of interaction between the anion and SO 2. These tunable azole-based ionic liquids with multiple sites offer significant improvements over commonly used absorbents, indicating the promise for industrial applications in acid gas separation.",

author = "Congmin Wang and Guokai Cui and Xiaoyan Luo and Yingjie Xu and Haoran Li and Sheng Dai",

year = "2011",

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T1 - Highly efficient and reversible SO2 capture by tunable azole-based ionic liquids through multiple-site chemical absorption

AU - Wang, Congmin

AU - Cui, Guokai

AU - Luo, Xiaoyan

AU - Xu, Yingjie

AU - Li, Haoran

AU - Dai, Sheng

PY - 2011/8/10

Y1 - 2011/8/10

N2 - A novel strategy for SO2 capture through multiple-site absorption in the anion of several azole-based ionic liquids is reported. An extremely high capacity of SO2 (>3.5 mol/mol) and excellent reversibility (28 recycles) were achieved by tuning the interaction between the basic anion and acidic SO2. Spectroscopic investigations and quantum-mechanical calculations showed that such high SO2 capacity originates from the multiple sites of interaction between the anion and SO 2. These tunable azole-based ionic liquids with multiple sites offer significant improvements over commonly used absorbents, indicating the promise for industrial applications in acid gas separation.

AB - A novel strategy for SO2 capture through multiple-site absorption in the anion of several azole-based ionic liquids is reported. An extremely high capacity of SO2 (>3.5 mol/mol) and excellent reversibility (28 recycles) were achieved by tuning the interaction between the basic anion and acidic SO2. Spectroscopic investigations and quantum-mechanical calculations showed that such high SO2 capacity originates from the multiple sites of interaction between the anion and SO 2. These tunable azole-based ionic liquids with multiple sites offer significant improvements over commonly used absorbents, indicating the promise for industrial applications in acid gas separation.

UR - http://www.scopus.com/inward/record.url?scp=79961148478&partnerID=8YFLogxK

U2 - 10.1021/ja204808h

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SN - 0002-7863

VL - 133

SP - 11916

EP - 11919

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 31

ER -

Highly efficient and reversible SO₂ capture by tunable azole-based ionic liquids through multiple-site chemical absorption

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