Excess properties of mixtures of some n -alkoxyethanols with organic solvents. V. Excess enthalpies of 2-butoxyethanol with normal alkanes at 298.15 K (original) (raw)

Excess Enthalpies and Volumes of Ternary Mixtures Containing 1-Propanol or 1-Butanol, an Ether (Diisopropyl Ether or Dibutyl Ether), and Heptane

Journal of Chemical & Engineering Data, 2000

Experimental data are reported at 298.15 K of excess molar volumes V E and of excess molar enthalpies H E for binary and ternary mixtures of an alkanol (1-propanol or 1-butanol), an ether (diisopropyl ether or dibutyl ether), and an alkane (heptane). A vibrating-tube densitometer was used to determine V E. H E was measured using a quasi-isothermal flow calorimeter. The experimental results are used to test the applicability of the modified UNIFAC model for correlating H E and of the ERAS model for describing both V E and H E of binary mixtures as well as for predicting the excess properties of ternary mixtures containing an alkanol, an ether, and an alkane. For all investigated binary systems, a better description of the experimental data was achieved with the ERAS model in comparison with the modified UNIFAC model.

Thermodynamic properties of binary mixtures {an alkoxyethanol+n-octane}. Excess molar enthalpies and excess molar heat capacities at 298.15 K

Fluid Phase Equilibria, 1999

Excess molar enthalpies and excess molar heat capacities of the binary mixtures x 2-ethoxyethanol, or Ž. 4 2-propoxyethanol, or 2-isopropoxyethanol, or 2-butoxyethanol, or 2-isobutoxyethanolq 1 y x n-octane have been measured at 298.15 K. Results have been compared with UNIFAC and DISQUAC calculations. Excess enthalpies are positive and do not differ very much in magnitude for all systems. Both excess enthalpies and excess heat capacities are positive and rather large. UNIFAC and DISQUAC models reproduce the experimental data fairly well. However, excess heat capacities are better correlated by DISQUAC.

Excess Molar Enthalpies of Binary Mixtures of Trichloroethylene with Six 2-Alkanols at 25°C

Journal of Solution Chemistry, 2001

Excess molar enthalpies HE have been measured for the binary mixtures trichloroethylene + 2-propanol, + 2-butanol, + 2-pentanol, + 2-hexanol, + 2-heptanol, and + 2-octanol using an isothermal microcalorimeter at 25°C. All the mixtures present exothermic events and showed minimum negative HE values around 0.50–0.60 mole fraction of trichloroethylene. Minimum values of HE vary from 450 J-mol-1 up to 530

Excess enthalpy HE of binary mixtures containing alkanes, methanol and tert-amyl-methyl ether (TAME)

Thermochimica Acta, 1996

Flow-calorimetric measurements of molar excess enthalpies at 298.15 K and 313.15 K and atmospheric pressure have been performed for binary mixtures of tert-amyl-methyl ether (TAME) with n-heptane, n-octane, iso-octane and methanol. The experimental results are used to test the applicability of the extended real associated solution (ERAS) model to describe thermodynamic excess properties.