کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
674074 | 1459538 | 2012 | 7 صفحه PDF | دانلود رایگان |
The densities of the deep eutectic solvent (DES) based on choline chloride and ethylene glycol (Ethaline) and its mixtures with water were measured from 298.15 K to 323.15 K over an extended pressure range (0.1–50) MPa. Other important properties such as isothermal compressibility and isobaric expansivity were derived for the pure system using the experimental data. The high-pressure densities were accurately correlated to the temperature, pressure and composition using a Tait-type equation. For the binary mixtures of Ethaline (1) + H2O (2), the excess molar volumes were investigated and represented as a function of temperature and composition by a Redlich–Kister-type equation. Results indicated that the correlations proposed in this work can be used to accurately predict the densities of the studied systems as functions of temperature, pressure and composition.
► The high-pressure densities of choline chloride–ethylene glycol and its aqueous solutions were measured.
► The pressure studied was (0.1–50) MPa.
► The temperature studied was (298.15–323.15) K.
► The measured data were reported as functions of temperature and composition.
► The measured data were represented satisfactorily by the applied correlations.
Journal: Thermochimica Acta - Volume 546, 20 October 2012, Pages 54–60