Thermodynamic and FT-IR study on molecular interactions between ethyl lactate with alkyl amines at different temperatures

Interactions between Ethyl Lactate and Substituted Ethanols or Ethyl Acetate: Thermodynamic, FT-IR Spectroscopic, DFT Method, and PC-SAFT EoS Studies

“…The uncertainties were estimated for density, speed of sound, and refractive index measurements within 0.0009 g cm –3 , 2.91 m s –2 , and 0.0006, respectively. Figure S1 illustrates the comparison of the experimental density, speed of sound, and refractive index of pure liquids together with the available literature data ,,,− ,− ,− at all of the studied temperatures (Table ). The range of deviations from the literature of pure liquids is within the reported uncertainties of these properties except a few (2-chloroethanol, 2-aminoethanol, ethyl acetate), ,, which show high deviation for only speed of sound.…”

“…An extensive survey of the literature showed that a few studies have been carried out on measurements of thermophysical and thermodynamic properties of binary mixtures containing EL with different liquids, namely, alcohols, 2-alkoxyethanols, C 3 -alkanols, aromatic/alkyl amines, , and nitrile compounds. , On the other hand, Resa et al have measured the densities, speed of sound, and refractive index for ethyl lactate with ethyl acetate at 298.15 K. As far as we know, thermophysical and excess thermodynamic properties of binary liquid mixtures of ethyl lactate with substituted ethanols and ethyl acetate at a temperature range of 298.15–323.15 K and at a pressure of 0.1 MPa with Fourier-transform infrared (FT-IR) spectroscopic and computational studies were not reported in the literature. Thus, the present study mainly focused on thermophysical properties (density, speed of sound, and refractive index) and excess thermodynamic parameters ( V E , k s E , and n D E ) of EL with 2-CE, 2-AE, and EA at T = 298.15–323.15 K and at 0.1 MPa together with experimental FT-IR analysis and density functional theory (DFT) calculations.…”

“…13−15 2-Aminoethanol is a colorless viscous liquid widely used in the pharmaceutical industries, for carbon dioxide absorption, and for controlling the pH in the reaction medium. 15 An extensive survey of the literature showed that a few studies have been carried out on measurements of thermophysical and thermodynamic properties of binary mixtures containing EL with different liquids, namely, alcohols, 9 2-alkoxyethanols, 16 C 3 -alkanols, 17 aromatic/alkyl amines, 18,19 and nitrile compounds. 20,21 On the other hand, Resa et al 22 have measured the densities, speed of sound, and refractive index for ethyl lactate with ethyl acetate at 298.15 K. As far as we know, thermophysical and excess thermodynamic properties of binary liquid mixtures of ethyl lactate with substituted ethanols and ethyl acetate at a temperature range of 298.15−323.15 K and at a pressure of 0.1 MPa with Fouriertransform infrared (FT-IR) spectroscopic and computational studies were not reported in the literature.…”