Quantitative investigation on the physical and chemical interactions between CO2 and amine-functionalized ionic liquid [aEMMIM][BF4] by NMR

被引：16

作者：

Chen, Yu ^{[1
]}

Zhou, Xiao-qin ^{[2
]}

Cao, Yuanyuan ^{[1
]}

Xue, Zhimin ^{[1
]}

Mu, Tiancheng ^{[1
]}

机构：

[1] Renmin Univ China, Dept Chem, Beijing 100872, Peoples R China

[2] Qufu Normal Univ, Coll Chem, Qufu 273165, Shandong, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2013年 / 574卷

基金：

中国国家自然科学基金;

关键词：

STERICALLY-HINDERED AMINES; CARBON-DIOXIDE CAPTURE; HIGHLY EFFICIENT; VINYL-CHLORIDE; GAS; ABSORPTION;

D O I：

10.1016/j.cplett.2013.04.069

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

There are both physical and chemical interactions between amine-functionalized ionic liquids (ILs) and CO2. A method to estimate the ratio between physical and chemical interactions based on NMR spectra was proposed. Results showed that 21% of [aEMMIM][BF4] interacted with CO2 chemically at 1:1 (CO2/IL) stoichiometry, leading to a 94% contribution to the solubility, whereas 79% of [aEMMIM][BF4] interacted with CO2 physically at 0.017:1 stoichiometry, leading to a 6% contribution. This method can be extended to other similar systems. Tethering high sterically substitute group at IL helps to obtain an equimolar CO2 absorption. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.

引用

页码：124 / 128

页数：5

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