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在常压下303~353 K和303~348 K温度范围分别测定了低共熔溶剂盐酸甜菜碱-乙二醇(Betaine·HCl-6EG)中加入不同浓度Ni Cl_2·6H_2O形成的Betaine·HCl-6EG-n Ni Cl_2·6H_2O低共熔离子液体的黏度和电导率,研究了温度、Ni Cl_2·6H_2O浓度对其黏度、电导率的影响规律。结果表明,在所研究的温度和Ni Cl_2·6H_2O浓度范围内低共熔离子液体Betaine·HCl-6EG-n Ni Cl_2·6H_2O都具有较低的黏度和良好的导电性。随着温度的升高,黏度减小,电导率增大,温度对黏度的影响更显著;黏度、电导率与温度的关系均可以用Arrhenius经验公式描述,由此计算得到其黏滞活化能和电导活化能。随着Ni Cl_2·6H_2O浓度的增加,黏滞活化能和电导活化能均会增大;Ni Cl_2·6H_2O的加入使得离子液体形成尺寸较大的络合离子,导电离子的有效浓度降低、离子半径增大,导致其电导率减小、黏度增大。
Under the atmospheric pressure of 303 ~ 353 K and 303 ~ 348 K, the concentration of Betaine · HCl-6EG was determined by adding different concentrations of NiCl_2 · 6H_2O into the low eutectic solvent betaine · HCl-6EG. 6EG-nNiCl_2 · 6H_2O eutectic ionic liquids, the effects of temperature and Ni Cl_2 · 6H_2O concentration and viscosity on the viscosity and conductivity were studied. The results show that the low eutectic ionic liquid Betaine · HCl-6EG-n Ni Cl 2 · 6H 2 O has low viscosity and good electrical conductivity at the studied temperature and Ni Cl 2 · 6H 2 O concentrations. With the increase of temperature, the viscosity decreases, the conductivity increases, and the influence of temperature on viscosity is more significant. The relationship between viscosity, conductivity and temperature can be described by Arrhenius empirical formula, and the viscous activation energy and Conductance activation energy. With the increase of Ni Cl 2 · 6H 2 O concentration, both the activation energy and the activation energy increase; the addition of Ni Cl 2 .H 2 O 2 makes the ionic liquid form larger complex ions, the effective concentration of the conductive ions decreases and the ionic radius Increase, leading to its conductivity decreases, the viscosity increases.