Grupo Especializado en Termodinámica de los Equilibrios entre Fasesenglish versionGETEF emblema


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Año 1992

  • Gonzalez, JA; de la Fuente, IG; Cobos, JC; Casanova, C; Liquid-liquid or solid-liquid equilibrium of dimethyl carbonate + normal alkanes (C10, C12, C14, C16); Int DATA Ser, Select Data Mixtures, Ser A, 20 (1) 1992 7-10
  • Gonzalez, JA; de la Fuente, IG; Cobos, JC; Casanova, C; Characterization of the alkanol-alkanol contacts abd prediction of excess functions of excess functions of ternary-systems of 2-n-alkan-1-ols and one n-alkane using DISQUAC; Fluid Phase Equilibr, 78 1992 61-80
The data available in the literature on the molar excess Gibbs energies GE, molar excess enthalpies HE, and activity coefficients at infinite dilution γi, for mixtures of two n-alkan-1-ols are examined on the basis of the DISQUAC group contribution model. Using the available interaction parameters for the hydroxyl/aliphatic contacts, the interchange coefficients for the hydroxyl/hydroxyl contacts Ch1h2,lDIS (l = 1, 2, 3) were fitted.
One set of GE ternary data and 21 sets of HE ternary data for n-alkan-1-ol(1) + n-alkan-1-ol(2) + n-alkane(3) systems are also investigated in the framework of this model. The relative standard deviations for the excess enthalpies are less than 0.1 for most of the mixtures.
  • de la Fuente, IG; Gonzalez, JA; Cobos, JC; Casanova, C; Excess molar volumes for dimethyl carbonate plus heptane, decane, 2,2,4-trimethylpentane, cyclohexane, benzene, toluene or tetrachloromethane; J Chem Eng Data, 37 (4) 1992 535-537
Excess molar volumes VE at atmospheric pressure and at 298.15 K for dimethyl carbonate + heptane, decane, 2,2,4-trimethylpentane, cyclohexane, benzene, toluene, or tetrachloromethane have been calculated from densities measured with a vibrating-tube densimeter. The VE are positive for all the systems over the whole mole-fraction range. These results, together with previously published excess molar enthalpies HE, suggest interactions between carbonate and hydrocarbons which are stronger with aromatic hydrocarbons than with aliphatic ones.
  • de la Fuente, IG; Rodriguez, JF; Gonzalez, JA; Cobos, JC; Casanova, C; Excess molar volumes of 1-nonanol with normal-heptane at 25 ºC, 35 ºC and 45 ºC; J Solut Chem, 21 (5) 1992 425-431
The excess molar volumes VmE at atmospheric pressure and at 25, 35 and 45 ºC for binary mixtures of 1-nonanol with n-heptane have been obtained over the whole mole fraction range from densities measured with a vibrating-tube densimeter. The measurements at 25 ºC were extended to high dilution of 1-nonanol. The VmE are sigmoid for the three temperatures, with a small maximum at low mole fractions of the alkanol. The absolute values of VmE increase with temperature from 25 to 45 ºC.
  • de la Fuente, IG; Rodriguez, JF; Gonzalez, JA; Cobos, JC; Casanova, C; Excess molar volumes of (n-nonan-1-ol + n-decane or n-tetradecane) at the temperatures 298.15 K, 308.15 K and 318.15 K; J Chem Thermodyn, 24 (1) 1992 23-27



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