Preorganization and Cooperation for Highly Efficient and Reversible Capture of Low-Concentration CO2 by Ionic Liquids

被引：146

作者：

Huang, Yanjie ^{[1
]}

Cui, Guokai ^{[1
,2
]}

Zhao, Yuling ^{[1
]}

Wang, Huiyong ^{[1
]}

Li, Zhiyong ^{[1
]}

Dai, Sheng ^{[2
,3
]}

Wang, Jianji ^{[1
]}

机构：

[1] Henan Normal Univ, Sch Chem & Chem Engn,Minist Educ, Henan Key Lab Green Chem,Key Lab Green Chem Media, Collaborat Innovat Ctr Henan Prov Green Mfg Fine, Xinxiang 453007, Henan, Peoples R China

[2] Oak Ridge Natl Lab, Chem Sci Div, Oak Ridge, TN 37831 USA

[3] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2017年 / 56卷 / 43期

基金：

中国国家自然科学基金;

关键词：

anions; carbon dioxide fixation; cooperative effects; ionic liquids; preorganization; CARBON-DIOXIDE CAPTURE; SO2; CAPTURE; HIGH-CAPACITY; ACID-BASE; ABSORPTION; BINDING; COMPLEXATION; CHEMISORPTION; SUBSTITUENT; VISCOSITY;

D O I：

10.1002/anie.201706280

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel strategy based on the concept of preorganization and cooperation has been designed for a superior capacity to capture low-concentration CO2 by imide-based ionic liquids. By using this strategy, for the first time, an extremely high gravimetric CO2 capacity of up to 22wt% (1.65molmol(-1)) and excellent reversibility (16 cycles) have been achieved from 10vol.% of CO2 in N-2 when using an ionic liquid having a preorganized anion. Through a combination of quantum-chemical calculations and spectroscopic investigations, it is suggested that cooperative interactions between CO2 and multiple active sites in the preorganized anion are the driving force for the superior CO2 capacity and excellent reversibility.

引用

页码：13293 / 13297

页数：5

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