化工学报2019，Vol.70Issue(7)：2786-2794,9.DOI:10.11949/0438-1157.20190060
氯化铬和氯化镍浓度及其存在形式对ChCl-EG低共熔溶剂电导率的影响
Effects of existence form and concentrations of NiCl2?6H2O and CrCl3?6H2O on conductivity of ChCl-EG deep eutectic solvent
摘要
Abstract
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.关键词
低共熔溶剂/溶解/存在形式/电导率/黏度/配合物Key words
deep eutectic solvent/dissolution/existence form/conductivity/viscosity/complexes分类
矿业与冶金引用本文复制引用
ZHU Xiaolin,XU Cunying,TANG Jie,HUA Yixin,ZHANG Qibo,LIU Hai,WANG Xiang,HUANG Mengting..氯化铬和氯化镍浓度及其存在形式对ChCl-EG低共熔溶剂电导率的影响[J].化工学报,2019,70(7):2786-2794,9.基金项目
国家自然科学基金项目(51764027) （51764027）
