Thermodynamics Research Center, ThermoML : Journal of Chemical Thermodynamics

Vapor-liquid equilibrium and excess properties of the binary mixtures formed by ethyl isobutyrate and n-alkanols

Mahdoui, Najla Ben, Abidi, Raouia, Artigas, Hector, Hichri, Monia, Lafuente, Carlos
J. Chem. Thermodyn. 2019, 139, 105884
ABSTRACT
This contribution reports densities together with the corresponding excess molar volumes, and excess molar enthalpies of the binary mixtures formed by ethyl isobutyrate and n-alkanols (from methanol to 1-butanol) at two temperatures (303.15 and 323.15) K and at atmospheric pressure (p = 0.1 MPa). These excess properties were correlated with composition using the Redlich-Kister equation. Excess molar volumes and enthalpies are positive, except the excess molar volumes for the mixture ethyl isobutyrate and methanol. Furthermore, the vapor-liquid equilibrium data for these mixtures at different experimental conditions have been also presented. Both the isothermal VLE at two temperatures (303.15 and 323.15) K and isobaric VLE at two pressures (40.000 and 101.325) kPa were measured. Some of the systems exhibit azeotropic points. The VLE data were found thermodynamically consistent. From experimental data the activity coefficients along with excess Gibbs function (isothermal) and reduced excess Gibbs functions (isobaric) were obtained and correlated with composition using the Wilson equation. These excess Gibbs function and reduced excess Gibbs functions were found positive. Finally, we have used our experimental VLE data to check the reliability of modified UNIFAC predictions.
Compounds
# Formula Name
1 C6H12O2 ethyl 2-methylpropanoate
2 CH4O methanol
3 C2H6O ethanol
4 C3H8O propan-1-ol
5 C4H10O butan-1-ol
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 2
  • POMD
  • 1
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 4
  • POMD
  • 2
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 2
  • POMD
  • 2
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 4
  • POMD
  • 3
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 2
  • POMD
  • 3
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 4
  • POMD
  • 4
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 2
  • POMD
  • 4
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 4
  • POMD
  • 5
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 2
  • POMD
  • 5
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 4
  • POMD
  • 1
  • 2
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 26
  • POMD
  • 1
  • 2
  • Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Calvet calorimetry
  • 22
  • POMD
  • 1
  • 2
  • Vapor or sublimation pressure, kPa ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 36
  • POMD
  • 1
  • 2
  • Mole fraction - 1 ; Gas
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Gas
  • Liquid
  • Density calibration data
  • 36
  • POMD
  • 1
  • 2
  • Boiling temperature at pressure P, K ; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 34
  • POMD
  • 1
  • 2
  • Mole fraction - 1 ; Gas
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Gas
  • Liquid
  • Density calibration data
  • 34
  • POMD
  • 1
  • 3
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 26
  • POMD
  • 1
  • 3
  • Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Calvet calorimetry
  • 22
  • POMD
  • 1
  • 3
  • Vapor or sublimation pressure, kPa ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 38
  • POMD
  • 1
  • 3
  • Mole fraction - 1 ; Gas
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Gas
  • Liquid
  • Density calibration data
  • 38
  • POMD
  • 1
  • 3
  • Boiling temperature at pressure P, K ; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 38
  • POMD
  • 1
  • 3
  • Mole fraction - 1 ; Gas
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Gas
  • Liquid
  • Density calibration data
  • 38
  • POMD
  • 1
  • 4
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 26
  • POMD
  • 1
  • 4
  • Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Calvet calorimetry
  • 22
  • POMD
  • 1
  • 4
  • Vapor or sublimation pressure, kPa ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 34
  • POMD
  • 1
  • 4
  • Mole fraction - 1 ; Gas
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Gas
  • Liquid
  • Density calibration data
  • 34
  • POMD
  • 1
  • 4
  • Boiling temperature at pressure P, K ; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 38
  • POMD
  • 1
  • 4
  • Mole fraction - 1 ; Gas
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Gas
  • Liquid
  • Density calibration data
  • 38
  • POMD
  • 1
  • 5
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 26
  • POMD
  • 1
  • 5
  • Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Calvet calorimetry
  • 22
  • POMD
  • 1
  • 5
  • Mole fraction - 1 ; Gas
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Gas
  • Liquid
  • Density calibration data
  • 30
  • POMD
  • 1
  • 5
  • Vapor or sublimation pressure, kPa ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 30
  • POMD
  • 1
  • 5
  • Boiling temperature at pressure P, K ; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 30
  • POMD
  • 1
  • 5
  • Mole fraction - 1 ; Gas
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Gas
  • Liquid
  • Density calibration data
  • 30