Prediction of the thermodynamic properties of 1-alkyl-3-methylimidazolium lactate ionic liquids [C n mim][Lact] (n = 2, 3, 4, 5, and 6) by parachor
作者:DaWei Fang、Jing Tong、Wei Guan、Han Wang、JiaZhen Yang
DOI:10.1007/s11426-010-4161-2
日期:2010.12
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
制备了一种基于乳酸盐,乳酸1-丁基-3-甲基咪唑鎓盐([C 4 mim] [Lact])的离子液体(IL),并通过1 H核磁共振(NMR)光谱和差示扫描量热法(DSC)对其进行了表征)。由于IL可以与水形成牢固的氢键,因此微量水是IL中有问题的杂质。使用标准添加方法(SAM),在温度范围(308.15至343.15±0.05)K下测量[C 4 mim] [Lact]的密度,折射率和表面张力。根据实验数据, [C 4 mim] [Lact]的抛物线和摩尔体积,以及分子体积V m,表面张力γ,汽化摩尔焓Δl g 使用半经验方法估算同系物[C n mim] [Lact](n = 2、3、4、5和6)的H m 0,折射率n D和热膨胀系数α。估计值与实验数据非常吻合。