Isothermal Vapor−Liquid Equilibrium at 333.15 K and Excess Molar Volumes, Refractive Indices, and Excess Molar Enthalpies at 303.15 K for the Binary and Ternary Mixtures of Di-isopropyl Ether, Ethanol, and 2,2,4-Trimethylpentane

Abstract

Isothermal vapor-liquid equilibrium (VLE) data at 333.15 K are measured for the binary systems {di-isopropyl ether (DIPE) + ethanol} and {DIPE + 2,2,4-trimethylpentane} and for the ternary system {DIPE + ethanol + 2,2,4-trimethylpentane} by using headspace gas chromatography. The experimental VLE data were correlated with the G E model: Margules, van Laar, Wilson, nonrandom two-liquid, and UNIQUAC equations. The excess molar volume and deviations in molar refractivity data are reported for the binary systems {DIPE + ethanol}, {DIPE + 2,2,4-trimethylpentane}, and {ethanol + 2,2,4-trimethylpentane} at 303.15 K. In addition, excess molar enthalpies for two binaries, {DIPE + ethanol} and {DIPE + 2,2,4-trimethylpentane}, at 303.15 K are also reported. These data were correlated with the Redlich-Kister equation. The excess molar volume and deviations in molar refractivity data are also reported for the ternary system {DIPE + ethanol + 2,2,4-trimethylpentane} at 303.15 K. The ternary data were correlated with the Cibulka equation. Also, the isocline of excess molar enthalpies for the same ternary system at 303.15 K was calculated using the Radojkovič equation.

Excess Volumes of Ternary Mixtures 2,2,4-Trimethylpentane + Diisopropyl Ether or Methyl tert-Butyl Ether + Methanol, Ethanol, or 1-Propanol at 298.15 K

“…As far as we know, the only previous studies on these type of mixtures are those for ternary 2,2,4-trimethylpentane + diisopropyl ether + ethanol , at (298.15 and 303.15) K and 2,2,4-trimethylpentane + diisopropyl ether +1-propanol at 303.15 K. Their results show a good concordance with ours.…”

Mixture Solubility Parameters from Experimental Data and Perturbed-Chain Statistical Associating Fluid Theory

“…Again, pure component solubility parameters were taken from the DIPPR database . Enthalpies and volumes of mixing used in the calculation of experimental binary solubility parameters are taken from experiments. − …”

High Pressure Volumetric Properties of the Binary Mixtures Di-isopropyl Ether + 2,2,4-Trimethylpentane

“…Several references of V E at 0.1 MPa were found for the mixture DIPE + 2,2,4-trimethylpentane. Blanco et al 11 report V E data at 298.15 K, while Chen and Tu 12 give data at 288.15, 298.15, and 308.15 K. Meanwhile, Suresh Reddy et al, 13 Hwang et al 14 and Kim et al 15 report excess volume at 303.15 K. Comparison of literature data at 0.1 MPa with this work is also presented in Figure 2, which shows acceptable agreement between our work and literature values, except for those of Kim et al 15 It must be taken into account that the measurements reported by the literature are performed by means of high precision atmospheric devices, while our work is done with a high pressure device with a higher uncertainty at low pressures. Moreover, small differences in density values lead to greater differences in excess volume, as excess properties use to be one to three order of magnitude smaller than the mixture properties.…”