Excess enthalpy, volume, and Gibbs free energy of n-propanol – isopropanol mixtures at 25 °C

Abstract

The results of calorimetric, dilatometric, and circulation still studies of the system n-propanol – isopropanol at 25 °C are reported. Examination of the behavior of the excess properties indicates that deviations from ideality can be attributed mainly to the formation of mixed association complexes.

Ternary Excess Molar Enthalpies for Methanol or Ethanol + 1-Propanol + 2-Propanol at the Temperature 298.15 K

“…The experimental results are compared with those predicted by the UNIQUAC associated-solution model using only the binary parameters obtained from the binary correlation of the excess molar enthalpies. The experimental excess molar enthalpies for the binary systems making up the ternary systems have been published: methanol + 1-propanol (Pflug et al, 1968); methanol + 2-propanol (Taylor and Bertrand, 1974); ethanol + 1-propanol (Pflug et al, 1968); ethanol + 2-propanol (Pflug et al, 1968); and 1-propanol + 2-propanol (Polak et al, 1970).…”

Vapor−Liquid Equilibrium of Propan-2-ol + Propan-1-ol + Sodium Iodide at 298.15 K

“…The vapor-liquid equilibrium of the propan-2-ol (1) + propan-1-ol (2) binary mixture was measured at 298.15 K ((0.05 K), and the experimental data are presented in Table 3. Figure 1 illustrates the comparison between measured and literature values (Polak et al, 1970). Satisfactory agreement within an average deviation of 1.28% was obtained.…”

Excess Molar Enthalpies for Ethanol + 2-Propanol + Methyl tert-Butyl Ether and 1-Propanol + 2-Propanol + Methyl tert-Butyl Ether at the Temperature of 298.15 K

“…The excess molar enthalpies of the constituent binary alcohol mixtures, ethanol + 2-propanol 6 and 1-propanol + 2-propanol, are completely exothermic, whereas for ethanol + MTBE, 1-propanol + MTBE, and 2-propanol + MTBE 9 these valures are highly endothermic. Figure illustrates the experimental excess molar enthalpies of the above constituting binary mixtures together with the calculated results from eq 3.…”

“…Following the above, it is desirable to know the thermodynamic properties of MTBE mixtures, and excess molar enthalpies of the ternary mixtures (ethanol or 1-propanol) + 2-propanol + MTBE at 298.15 K have been brought forward in this paper as a part of our systematic study . Excess molar enthalpies of the binary mixtures making up the above two ternary systems at 298.15 K are available in the literature: ethanol + 2-propanol; ethanol + MTBE; 1-propanol + 2-propanol; 1-propanol + MTBE; and 2-propanol + MTBE …”