Effects of existence form and concentrations of NiCl2•6H2O and CrCl3•6H2O on conductivity of ChCl-EG deep eutectic solvent

被引：0

作者：

Zhu X. ^{[1
]}

Xu C. ^{[1
,2
]}

Tang J. ^{[1
]}

Hua Y. ^{[1
,2
]}

Zhang Q. ^{[1
,2
]}

Liu H. ^{[1
]}

Wang X. ^{[1
]}

Huang M. ^{[1
]}

机构：

[1] Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, Yunnan

[2] State Key Laboratory of Complex Nonferrous Metal Resources Cleaning Utilization, Kunming, 650093, Yunnan

来源：

Huagong Xuebao/CIESC Journal | 2019年 / 70卷 / 07期

关键词：

Complexes; Conductivity; Deep eutectic solvent; Dissolution; Existence form; Viscosity;

D O I：

10.11949/0438-1157.20190060

中图分类号：

学科分类号：

摘要：

The effects of existence form and total concentration of chromium chloride (CrCl3•6H2O) and nickel chloride (NiCl2•6H2O) on the conductivity and viscosity of choline chloride (ChCl)- ethylene glycol (EG) deep eutectic solvent were investigated. The ESI-MS analysis indicated that six-coordinated complexes are presented in the form of [Cr(H2O)2Cl4]- and [Ni(H2O)2Cl4]2-. It is deduced that the complex anions are formed through d2sp3 hybrid orbitals of Cr3+ (or Ni2+) ion and six d2sp3 hybrid orbitals are all filled with lone pair electrons which are donated by Cl- and O atoms of H2O, respectively. With the increase of temperature or decrease of total metal ions concentration, the electrical conductivity increases. In addition, the viscosity of the solution changes with temperature and total metal ion concentration as opposed to conductivity. This is mainly due to the formation of ions in the solution due to the formation of nickel and chromium complex ions. © All Right Reserved.

引用

页码：2786 / 2794

页数：8

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