Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Studies on the importance of chain length of alkanols on the thermodynamic and transport properties of liquid mixtures at various temperatures

Gowrisankar, M., Venkatesulu, A., Krishna, T. S., Ravindhranath, K.
J. Chem. Thermodyn. 2017, 107, 104-113
ABSTRACT
Densities (q), speeds of sound (u), and viscosities (g) are reported for binary mixtures of N,N-diethyl aniline with higher 1-alkanols (1-octanol, 1-nonanol and 1-decanol) over the entire composition range of mole fraction at T = (303.15-318.15) K and at atmospheric pressure 0.1 MPa. The excess properties such as excess molar volume, excess isentropic compressibility and deviation in viscosity are calculated from the experimental density, speed of sound and viscosity. Excess properties are correlated using the Redlich.Kister polynomial smoothing equation. The excess partial molar volumes and excess partial molar isentropic compressibilities are calculated for all the binary systems throughout the composition range and also at infinite dilutions. The results are analysed in terms of rupture of hydrogen bonded chain of the dipolar interaction between solute and alkan-1-ol exceeds the intermolecular interaction through dipole-dipole and hydrogen bonding between N,N-diethyl aniline and 1-alkanol molecules. The VE results are analysed in the light of Prigogine-Flory-Patterson theory. Analysis of each of the three contributions viz. interactional, free volume and P. to VE has shown that interactional contribution are positive for all systems, the free volume effect are negative for all the mixtures and P. contribution are positive for all the mixtures except 1-octanol which has a negative internal pressure. The variations of these parameters with composition and temperature discussed in terms of intermolecular interactions prevailing in these mixtures.
Compounds
# Formula Name
1 C10H15N N,N-diethylaniline
2 C8H18O octan-1-ol
3 C9H20O nonan-1-ol
4 C10H22O decan-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
  • 4
  • POMD
  • 1
  • Speed of sound, m/s ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Linear variable-path acoustic interferometer
  • 4
  • POMD
  • 1
  • Viscosity, Pa*s ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Capillary tube (Ostwald; Ubbelohde) method
  • 4
  • POMD
  • 3
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 4
  • POMD
  • 3
  • Speed of sound, m/s ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Linear variable-path acoustic interferometer
  • 4
  • POMD
  • 3
  • Viscosity, Pa*s ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Capillary tube (Ostwald; Ubbelohde) method
  • 4
  • POMD
  • 1
  • 2
  • Mass density, kg/m3 ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 44
  • POMD
  • 1
  • 2
  • Speed of sound, m/s ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Linear variable-path acoustic interferometer
  • 44
  • POMD
  • 1
  • 2
  • Viscosity, Pa*s ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Capillary tube (Ostwald; Ubbelohde) method
  • 44
  • POMD
  • 1
  • 3
  • Mass density, kg/m3 ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 44
  • POMD
  • 1
  • 3
  • Speed of sound, m/s ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Linear variable-path acoustic interferometer
  • 44
  • POMD
  • 1
  • 3
  • Viscosity, Pa*s ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Capillary tube (Ostwald; Ubbelohde) method
  • 44
  • POMD
  • 1
  • 4
  • Mass density, kg/m3 ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 44
  • POMD
  • 1
  • 4
  • Speed of sound, m/s ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Frequency, MHz; Liquid
  • Liquid
  • Linear variable-path acoustic interferometer
  • 44
  • POMD
  • 1
  • 4
  • Viscosity, Pa*s ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Capillary tube (Ostwald; Ubbelohde) method
  • 44