文献类型：期刊文献

英文题名：A detailed study of physicochemical properties and microstructure of EmimCl-EG deep eutectic solvents: Their influence on SO2 absorption behavior

作者：Zhu, Jiahong[1];Xu, Yingjie[1];Feng, Xiao[1];Zhu, Xiao[2]

机构：[1]Shaoxing Univ, Dept Chem, Shaoxing 312000, Zhejiang, Peoples R China;[2]Qufu Normal Univ, Sch Chem & Chem Engn, Qufu 273165, Peoples R China

年份：2018

卷号：67

起止页码：148

外文期刊名：JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY

收录：SCI-EXPANDED(收录号：WOS:000448095700013)、、WOS

基金：The authors are grateful for the financial supports from National Natural Science Foundation of Zhejiang Province (no. Y18B060014), National Natural Science Foundation of China (no. 21406140), Undergraduate Scientific and Technological Innovation Project of Shaoxing City (no. 2016R06) and Zhejiang Province (no. 2016R428031), the Key Teacher Training Research of Shaoxing University (no. 2016227).

语种：英文

外文关键词：Deep eutectic solvent; Microstructure; Physicochemical property; Spectroscopy; Sulfur dioxide absorption

外文摘要：To get a better understanding of the effect of physicochemical properties and microstructure on SO2 absorption behavior of DESs with different molar ratios of EmimCl and EG (from 2:1 to 1:2), densities (p), viscosities (n), speeds of sound (u), refractive indices (n(D)), and thermal decomposition temperatures (T-d) of EmimCl-EG DESs were measured and used to obtain the other derived properties, such as thermal expansion coefficient (a(p)) and activation energy for viscous flow (E-n). Moreover, FT-IR spectra and in situ variable-temperature NMR spectroscopy were employed to study the microstructures of DESs. Based on physicochemical and spectroscopic properties, the influence of the concentrations of EmimCl on the interactions in DESs was explored to be associated with their SO2 absorption behavior. The results show that the interactions between Ernie(+) and Cl- of EmimCl is gradually weakening with increasing the concentration of EG in DESs by forming of hydrogen bond interaction of O-H center dot center dot center dot Cl-, resulting in a decrease of p, u, n(D), and T-d of DESs, and hindering the charge-transfer interaction of SO2 with Cl- and deceasing SO2 capture capacity. Moreover, the SO2 absorption capacity of DESs is proportional to their p and En, respectively. (C) 2018 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.