文献类型：期刊文献

英文题名：Electric conductivity of binary solutions of DBU lactic acid ionic liquid

作者：Song, Mengling[1];Zhu, Xiao[1];Xu, Yingjie[2]

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

年份：2020

卷号：58

期号：1

起止页码：1

外文期刊名：PHYSICS AND CHEMISTRY OF LIQUIDS

收录：SCI-EXPANDED(收录号：WOS:000587877400001)、、EI(收录号：20183805841043)、Scopus(收录号：2-s2.0-85053438639)、WOS

基金：This work was supported by the National Natural Science Foundation of China [21206085 and 21406140] and Scientific Research Training Program for Undergraduates of Qufu Normal University [2016042].

语种：英文

外文关键词：DBU-based ionic liquid; electric conductivity; binary solutions; correlation

外文摘要：A new protic ionic liquid, prepared from 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) with lactic acid, has been synthesized in this paper. Then, the concentration-dependent electric conductivity (kappa) of binary solutions of [HDBU][La] with water, ethanol and n-butanol has been measured, respectively, at different temperatures. In addition, the electric conductivities kappa have been correlated using Castell-Amis equation with satisfying results. It has been found that with the mole fraction of [HDBU][La] increasing, electric conductivity kappa firstly increased because of solvation effects. Afterwards, kappa of solutions gradually decreased due to the predomination of strong electrostatic force between ions and enhancement of viscosity of solutions in [HDBU][La]-rich region. Furthermore, the results also indicated that solvents with higher dielectric constant could more easily promote the dissociation of [HDBU][La].