Vapor–Liquid Equilibria, Excess Enthalpy, and Excess Volume of Binary Mixtures Containing an Alcohol (1-Butanol, 2-Butanol, or 2-Methyl-2-butanol) and 2-Ethoxy-2-methylbutane

Abstract

Pure component vapor pressure between (324 and 374) K, isothermal vapor−liquid equilibria at 358 K, excess enthalpy, excess volume, and density at 298 K were determined for three binary systems consisting of 2-ethoxy-2-methylbutane + 1-butanol, + 2-butanol, or + 2-methyl-2-butanol. Excess enthalpy was measured with a microflow calorimeter and excess volume with a vibrating-tube densimeter. A recirculation still was used to measure both the pure component vapor pressures and the phase equilibria of binary systems. The measured data were well-represented with local composition models. A maximum pressure azeotrope was observed for all measured systems.

Proposal for a Viscous Test Mixture—Densities, Viscosities, and Vapor–Liquid Equilibrium Data of the Binary Mixture 2-Methyl-2-butanol + 2-Methyl-1-propanol

“…Vapor pressures, measured for 2-methyl-2-butanol, are in very good agreement with values from Butler et al, but exceed the values reported by Senol and Sundberg et al for temperatures T b > 340 K. However, the values from this study are significantly below those from Kulikov et al, where the transpiration method was used, resulting in significant positive deviations from the values determined in this study as well as from other authors. For 2-methyl-1-propanol, in comparison to this study, higher vapor pressures were reported by Butler et al Results from Brown et al and Martinez et al are in good agreement, whereas again for T b > 340 K several authors report lower vapor pressures, resulting in negative deviations in Figure .…”

“…Percent deviations of experimental vapor pressures and Wagner eq from regression for DIPPR eq over boiling temperature of 2-methyl-2-butanol (MB): ◊, this work; , Wagner equation; ⊕, Aucejo et al; △, Butler et al; ×, Kulikov et al; crossed diamond, Senol; dotted diamond, Sundberg et al …”

“…Physico-chemical properties of the pure components are available from the literature for the vapor pressures, − density, − and viscosity, ,, whereas no data could be obtained for their mixtures from open literature and commercial databanks. Hence, vapor–liquid equilibria (VLE) were determined at pressures ranging from 2 to 95 kPa.…”

Measurements and Correlation of Isobaric Vapor–Liquid Equilibrium Data for Binary Mixtures of Furan, Oxolane, and Furan-2-Carbaldehyde and Application of the Binary Model Parameters for Further Prediction of the Ternary System

“…The combined total flow rate of the components was 0.5 cm 3 ·min –1 . The calorimeter was gauged as noted by Sundberg . The precision of the calorimeter temperature was ±0.1 K, and the accuracy was ±0.05 K, as provided by the manufacturer for the entire operating temperature range from ambient temperature to 573 K and pressure range at atmospheric pressure.…”

CHAPTER 7. Excess Volumes of Liquid Nonelectrolyte Mixtures

“…311 Excess volumes have been determined for binary mixtures of tert-amylmethyl ether (TAME) with ethanol, 312 both components being gasoline additives, and TAME acts as octane booster. For binary mixtures of tert-amylethylether (TAEE, 2-ethoxy-2-methylbutane) with 1-butanol, or with 2-butanol, or with 2-methyl-2-butanol, Sundberg et al 313 present isothermal vapour-liquid equilibrium (VLE) data at 358 K (deriving activity coefficients), and excess molar volumes and excess molar enthalpies at 298.15 K. The measured VLE data were well correlated with local composition models.…”