Significant Improvements in CO2 Capture by Pyridine‐Containing Anion‐Functionalized Ionic Liquids through Multiple‐Site Cooperative Interactions

Angewandte Chemie - International Edition - Tập 53 Số 27 - Trang 7053-7057 - 2014
Xiaoyan Luo1, Yan Guo1, Fang Ding1, Huimin Zhao1, Guokai Cui1, Haoran Li1, Congmin Wang1
1Department of Chemistry, ZJU-NHU United R&D Center, Zhejiang University, Hangzhou, 310027, P. R. China.

Tóm tắt

AbstractA strategy for improving CO2 capture by new anion‐functionalized ionic liquids (ILs) making use of multiple site cooperative interactions is reported. An extremely high capacity of up to 1.60 mol CO2 per mol IL and excellent reversibility were achieved by introducing a nitrogen‐based interacting site on the phenolate and imidazolate anion. Quantum‐chemical calculations, spectroscopic investigations, and calorimetric data demonstrated that multiple‐site cooperative interactions between two kinds of interacting sites in the anion and CO2 resulted in superior CO2 capacities, which originated from the π‐electron delocalization in the pyridine ring.

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Angewandte Chemie - International Edition

Tập 53 Số 27

7053-7057

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