Thermophysical Properties of Mixtures Containing Cholinium l-Alaninate and Water, Ethanol, or Propan-1-ol
JOURNAL OF CHEMICAL AND ENGINEERING DATA(2023)
摘要
Choline amino acid ionic liquids (CAAILs) provide a greeneralternativeto classical ionic liquids, such as the ones based on imidazoliumcations, since they can be obtained from natural sources with largerbiodegradability. Given that most industrial extractions are performedin either aqueous or alcoholic media, the thermophysical characterizationof binary mixtures containing these solvents is very important forprocess design. In this work, the influences of the mole fractionof ionic liquid and of temperature on the thermophysical propertiesof binary mixtures containing water, ethanol, or propan-1-ol and cholinium l-alaninate ([Ch][Ala]), a well-known CAAIL, were studied. Dynamicviscosity, shear stress, torque (T = 288.15 -308.15 K), electrical conductivity (T = 298.15 K),and density (T = 293.15, 298.15, 303.15 K) were measuredat 0.1 MPa, and the corresponding excess volumes were calculated andfitted to a Redlich-Kister (RK) equation. Moreover, the effectof temperature on density (T = 288.15 - 323.15K), dynamic viscosity (T = 288.15 - 323.15K), and refractive index (T = 288.15 - 343.15K) of the synthesized [Ch][Ala] was also evaluated and compared withliterature. Dynamic viscosities of the pure components were determinedand fitted using the Vogel-Fulcher-Tammann-Hesse(VFTH) equation.
更多查看译文
关键词
mixtures,cholinium,ethanol
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要