Vapor-Liquid Equilibrium

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Antoni Martínez-andreu - One of the best experts on this subject based on the ideXlab platform.

Gabriele Di Giacomo - One of the best experts on this subject based on the ideXlab platform.

  • Vapor-Liquid Equilibrium calculation of the system water-hydrogen chloride
    Fluid Phase Equilibria, 1994
    Co-Authors: Stefano Brandani, Vincenzo Brandani, Gabriele Di Giacomo
    Abstract:

    Abstract Brandani, S., Brandani, V. and Di Giacomo, G., 1994. Vapor-Liquid Equilibrium calculation of the system water-hydrogen chloride. Fluid Phase Equilibria, 92: 67-74. The Vapor-Liquid Equilibrium of the system water-hydrogen chloride has been described. The activity coefficients in the liquid phase are evaluated by an extended Pitzer model, where the reference state for hydrogen chloride is defined according to Henry's law. The results have been compared with those obtained using a modified Engels and Bosen model.

  • Vapor—liquid Equilibrium of water—trioxane—formaldehyde mixture
    Fluid Phase Equilibria, 1991
    Co-Authors: Stefano Brandani, Vincenzo Brandani, Gabriele Di Giacomo
    Abstract:

    Abstract Recently, we have developed a new model for describing vapor—liquid Equilibrium of the water—formaldehyde and methanol—formaldehyde systems. This model superimposes a physical theory onto the chemical theory for describing liquid-phase behavior of formaldehyde in active solvents. Maurer recently reported vapor—liquid Equilibrium data for the water—trioxane—formaldehyde system. The characteristic of this system is the contemporaneous presence of an active (water) and an inert (trioxane) solvent together with formaldehyde. To test our model, we have fitted the experimental data of Maurer using only three adjustable parameters: the zero pressure Henry's constant of formaldehyde in trioxane and, in the expressions for the activity coefficients which account for interactions between water and trioxane and trioxane and formaldehyde, two physical parameters. The results are satisfactory and the thermodynamic model proposed can be used with confidence to describe vapor—liquid Equilibrium of formaldehyde in the presence of an active and of an inert solvent.

Ernesto Vercher - One of the best experts on this subject based on the ideXlab platform.

Stefano Brandani - One of the best experts on this subject based on the ideXlab platform.

  • Vapor−Liquid Equilibrium of Formaldehyde Mixtures Containing Methanol
    Industrial & Engineering Chemistry Research, 1998
    Co-Authors: Stefano Brandani, Vincenzo Brandani, Ida Tarquini
    Abstract:

    A new description of the vapor phase of formaldehyde solutions containing methanol is presented. In contrast with all previous models for these mixtures, it is recognized that the dimer resulting from the formaldehyde−methanol reaction has a relatively high volatility and should be considered present in the vapor phase. The new model is matched to the experimental vapor−liquid Equilibrium data for binary and ternary mixtures containing formaldehyde, methanol, and water. The proposed model represents well vapor−liquid Equilibrium of these reacting mixtures and does not reveal systematic deviations for the ternary system as observed with previous models.

  • Vapor-Liquid Equilibrium calculation of the system water-hydrogen chloride
    Fluid Phase Equilibria, 1994
    Co-Authors: Stefano Brandani, Vincenzo Brandani, Gabriele Di Giacomo
    Abstract:

    Abstract Brandani, S., Brandani, V. and Di Giacomo, G., 1994. Vapor-Liquid Equilibrium calculation of the system water-hydrogen chloride. Fluid Phase Equilibria, 92: 67-74. The Vapor-Liquid Equilibrium of the system water-hydrogen chloride has been described. The activity coefficients in the liquid phase are evaluated by an extended Pitzer model, where the reference state for hydrogen chloride is defined according to Henry's law. The results have been compared with those obtained using a modified Engels and Bosen model.

  • Vapor—liquid Equilibrium of water—trioxane—formaldehyde mixture
    Fluid Phase Equilibria, 1991
    Co-Authors: Stefano Brandani, Vincenzo Brandani, Gabriele Di Giacomo
    Abstract:

    Abstract Recently, we have developed a new model for describing vapor—liquid Equilibrium of the water—formaldehyde and methanol—formaldehyde systems. This model superimposes a physical theory onto the chemical theory for describing liquid-phase behavior of formaldehyde in active solvents. Maurer recently reported vapor—liquid Equilibrium data for the water—trioxane—formaldehyde system. The characteristic of this system is the contemporaneous presence of an active (water) and an inert (trioxane) solvent together with formaldehyde. To test our model, we have fitted the experimental data of Maurer using only three adjustable parameters: the zero pressure Henry's constant of formaldehyde in trioxane and, in the expressions for the activity coefficients which account for interactions between water and trioxane and trioxane and formaldehyde, two physical parameters. The results are satisfactory and the thermodynamic model proposed can be used with confidence to describe vapor—liquid Equilibrium of formaldehyde in the presence of an active and of an inert solvent.

Vincenzo Brandani - One of the best experts on this subject based on the ideXlab platform.

  • Vapor−Liquid Equilibrium of Formaldehyde Mixtures Containing Methanol
    Industrial & Engineering Chemistry Research, 1998
    Co-Authors: Stefano Brandani, Vincenzo Brandani, Ida Tarquini
    Abstract:

    A new description of the vapor phase of formaldehyde solutions containing methanol is presented. In contrast with all previous models for these mixtures, it is recognized that the dimer resulting from the formaldehyde−methanol reaction has a relatively high volatility and should be considered present in the vapor phase. The new model is matched to the experimental vapor−liquid Equilibrium data for binary and ternary mixtures containing formaldehyde, methanol, and water. The proposed model represents well vapor−liquid Equilibrium of these reacting mixtures and does not reveal systematic deviations for the ternary system as observed with previous models.

  • Vapor-Liquid Equilibrium calculation of the system water-hydrogen chloride
    Fluid Phase Equilibria, 1994
    Co-Authors: Stefano Brandani, Vincenzo Brandani, Gabriele Di Giacomo
    Abstract:

    Abstract Brandani, S., Brandani, V. and Di Giacomo, G., 1994. Vapor-Liquid Equilibrium calculation of the system water-hydrogen chloride. Fluid Phase Equilibria, 92: 67-74. The Vapor-Liquid Equilibrium of the system water-hydrogen chloride has been described. The activity coefficients in the liquid phase are evaluated by an extended Pitzer model, where the reference state for hydrogen chloride is defined according to Henry's law. The results have been compared with those obtained using a modified Engels and Bosen model.

  • Vapor—liquid Equilibrium of water—trioxane—formaldehyde mixture
    Fluid Phase Equilibria, 1991
    Co-Authors: Stefano Brandani, Vincenzo Brandani, Gabriele Di Giacomo
    Abstract:

    Abstract Recently, we have developed a new model for describing vapor—liquid Equilibrium of the water—formaldehyde and methanol—formaldehyde systems. This model superimposes a physical theory onto the chemical theory for describing liquid-phase behavior of formaldehyde in active solvents. Maurer recently reported vapor—liquid Equilibrium data for the water—trioxane—formaldehyde system. The characteristic of this system is the contemporaneous presence of an active (water) and an inert (trioxane) solvent together with formaldehyde. To test our model, we have fitted the experimental data of Maurer using only three adjustable parameters: the zero pressure Henry's constant of formaldehyde in trioxane and, in the expressions for the activity coefficients which account for interactions between water and trioxane and trioxane and formaldehyde, two physical parameters. The results are satisfactory and the thermodynamic model proposed can be used with confidence to describe vapor—liquid Equilibrium of formaldehyde in the presence of an active and of an inert solvent.