论文部分内容阅读
An ionic liquid (IL) based on lactate,1-butyl-3-methylimidazolium lactate ([C4mim][Lact]),has been prepared and characterized by 1H nuclear magnetic resonance (NMR) spectroscopy and differential scanning calorimetry (DSC).Since the IL can form strong hydrogen bonds with water,trace water is a problematic impurity in the IL.Using the standard addition method (SAM),the density,refractive index and surface tension of [C4mim][Lact] were measured in the temperature range (308.15 to 343.15 ± 0.05) K.On the basis of the experimental data,the parachor and molar volume for [C4mim][Lact],and the molecular volume V m,surface tension γ,molar enthalpy of vaporization △lgHm 0,refractive index n D,and the thermal expansion coefficients,for the homologues [Cnmim][Lact] (n=2,3,4,5,and 6) were estimated using semi-empirical methods.The estimated values are in good agreement with the experimental data.
Anionic liquid (IL) based on lactate, 1-butyl-3-methylimidazolium lactate ([C4mim] [Lact]) has been prepared and characterized by 1H nuclear magnetic resonance (NMR) spectroscopy and differential scanning calorimetry the IL can form strong hydrogen bonds with water, trace water is a problematic impurity in the IL. Using the standard addition method (SAM), the density, refractive index and surface tension of [C4mim] [Lact] were measured in the temperature range (308.15 to 343.15 ± 0.05) K.On the basis of the experimental data, the parachor and molar volume for [C4mim] [Lact], and the molecular volume Vm, surface tension γ, molar enthalpy of vaporization ΔlgHm 0, refractive index n D, and the thermal expansion coefficients, for the homologues [Cnmim] [Lact] (n = 2,3,4,5, and 6) were estimated using semi-empirical methods. experimental data.