Significant Improvements in CO2 Capture by Pyridine‐Containing Anion‐Functionalized Ionic Liquids through Multiple‐Site Cooperative Interactions1. (4th June 2014)

• Record Type: Journal Article
• Authors: Luo, Xiaoyan; Guo, Yan; Ding, Fang; Zhao, Hongqing; Cui, Guokai; Li, Haoran; Wang, Congmin
• Is Part Of: Angewandte Chemie. Volume 126:Number 27(2014)
• Page Start: 7173
• Page End: 7177
• Publication Date: 2014-06-04
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201400957
• Languages: English
• ISSNs: 0044-8249

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A 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.</p> </abstract>