The Experts below are selected from a list of 249 Experts worldwide ranked by ideXlab platform

Martín Aznar - One of the best experts on this subject based on the ideXlab platform.

  • experimental and calculated liquid liquid Equilibrium Data for water furfural solvents
    Fluid Phase Equilibria, 2012
    Co-Authors: Bruno F. De Almeida, Leonardo Hadlich De Oliveira, Thiago M. Waldrigui, Thiago De C. Alves, Martín Aznar
    Abstract:

    Abstract Liquid–liquid Equilibrium Data for water + furfural + ethyl or propyl acetate are reported at 288.2, 303.2 and 318.2 and atmospheric pressure (≈95 kPa). The systems present type II phase diagrams, since water is partially miscible with furfural and esters. In order to obtain more general water + furfural interaction parameters, NRTL and UNIQUAC models were utilized to correlate Data determined in this work and Data for 13 systems previously reported. The models correlate well the obtained tie lines and NRTL presents better performance than UNIQUAC.

  • Experimental and calculated liquid–liquid Equilibrium Data for water + furfural + solvents
    Fluid Phase Equilibria, 2012
    Co-Authors: Bruno F. De Almeida, Leonardo Hadlich De Oliveira, Thiago M. Waldrigui, Thiago De C. Alves, Martín Aznar
    Abstract:

    Abstract Liquid–liquid Equilibrium Data for water + furfural + ethyl or propyl acetate are reported at 288.2, 303.2 and 318.2 and atmospheric pressure (≈95 kPa). The systems present type II phase diagrams, since water is partially miscible with furfural and esters. In order to obtain more general water + furfural interaction parameters, NRTL and UNIQUAC models were utilized to correlate Data determined in this work and Data for 13 systems previously reported. The models correlate well the obtained tie lines and NRTL presents better performance than UNIQUAC.

  • Liquid—Liquid Equilibrium Data in Ionic Liquid + 4-Methyldibenzothiophene + n-Dodecane Systems
    Industrial & Engineering Chemistry Research, 2010
    Co-Authors: Leonardo Hadlich De Oliveira, Martín Aznar
    Abstract:

    In this work, liquid−liquid Equilibrium Data for 1-ethyl-3-methylimidazolium diethylphosphate ([emim][DEtPO4]) or 1-ethyl-3-methylimidazolium ethylsulfate ([emim][EtSO4]) + 4-methyl-dibenzothiophene (4-MDBT) + n-dodecane systems at 25 and 40 °C and atmospheric pressure (≈95 kPa) were determined by refractometry. 4-MDBT is a DBT derivative and it is one of the most difficult diesel sulfur pollutants to remove by the conventional process of hydrodesulfurization. The liquid−liquid Equilibrium Data were used to study the 4-MDBT extraction from n-dodecane as model diesel oil. 4-MDBT distribution coefficients, solvent selectivities, and extraction Data also indicate that [emim][DEtPO4] is a better solvent for extractive desulfurization of n-dodecane than [emim][EtSO4]. For a solvent/n-dodecane mass ratio of 0.6, the sulfur content in n-dodecane decreases 17−24% and 5−15% for [emim][DEtPO4] and [emim][EtSO4], respectively. The quality of the Data was ascertained by the Hand and Othmer−Tobias correlations, which ...

Dominique Richon - One of the best experts on this subject based on the ideXlab platform.

  • Vapor-liquid Equilibrium Data Concerning Refrigerant Systems (R116 + R143a)
    Energy Procedia, 2012
    Co-Authors: Hakim Madani, Christophe Coquelet, Dominique Richon
    Abstract:

    Development of modern refrigeration systems is critical for the success of new global environmental protection efforts. The binary system of refrigerants: Hexafluoroethane (R116) + 1,1,1- trifluoroethane (R143a), has been studied with the aim of providing PTxy Data. Isothermal vapor-liquid Equilibrium Data have been generated using the "static-analytic" method from 258 to 328 K at pressures from 0.39 to 3.89 MPa. The modelcomposed of the Peng-Robinson equation of state, the Mathias-Copeman alpha function, the Wong-Sandler mixing rules and the NRTL cell theory is applied herein to correlate the Data and calculate the critical line.

  • Ice - Clathrate Hydrate - Gas Equilibrium Data for the Air, Oxygen, Nitrogen, Methane or Ethane + Water System
    2010
    Co-Authors: Amir H. Mohammadi, Dominique Richon
    Abstract:

    In this work, we report the ice - clathrate hydrate - gas Equilibrium Data for the air, oxygen, nitrogen, methane or ethane + water system. The Equilibrium Data for methane and ethane clathrate hydrates are compared with the experimental Data reported in the literature to demonstrate the reliability of the isothermal pressure-search method used in our measurements. The new experimental Data generated for nitrogen and oxygen clathrate hydrates are compared with few sets of experimental Data reported in the literature. It is shown that the existing ice - clathrate hydrate - gas Equilibrium Data reported in the literature for the nitrogen or oxygen + water system are not reliable. A comparison is finally made on the Equilibrium conditions of air, nitrogen and oxygen clathrate hydrates.

  • Liquid Hydrate Former + Hydrate + Liquid Water Equilibrium Data for the Ethane, Carbon Dioxide or Hydrogen Sulfide + Water System
    2009
    Co-Authors: Amir H. Mohammadi, Dominique Richon
    Abstract:

    In this work, we report the liquid hydrate former + hydrate + liquid water Equilibrium Data for the ethane, carbon dioxide or hydrogen sulfide + water system. An isochoric pressure-search method was used to perform the measurements. The new Equilibrium Data are compared with the experimental Data reported in the literature to study the reliability of the literature Data.

  • Equilibrium Data of Carbonyl Sulfide and Hydrogen Sulfide Clathrate Hydrates
    Journal of Chemical & Engineering Data, 2009
    Co-Authors: Amir H. Mohammadi, Dominique Richon
    Abstract:

    In this communication, we report Equilibrium Data for carbonyl sulfide and hydrogen sulfide clathrate hydrates in the temperature ranges of (274.7 to 281.5) K and (277.7 to 301.3) K, respectively. The experimental Data were measured using an isochoric pressure search method. The new Equilibrium Data for hydrogen sulfide clathrate hydrates are compared with the experimental Data reported in the literature, and the acceptable agreements demonstrate the reliability of the experimental method used in this work.

Scott W. Campbell - One of the best experts on this subject based on the ideXlab platform.

  • An expression for GE for use in the reduction of ternary vapor-liquid Equilibrium Data
    Fluid Phase Equilibria, 1992
    Co-Authors: Scott W. Campbell
    Abstract:

    Abstract Campbell, S.W. 1992. An expression for G E for use in the reduction of ternary vapor-liquid Equilibrium Data. Fluid Phase Equilibria, 74: 35-46. A new empirical correlating expression for the excess Gibbs free energy is proposed for use in reduction of ternary vapor-liquid Equilibrium Data. The equation results from an attempt to combine the desirable aspects of local composition equations and those based on Wohl's expansion. The method is applied to two ternary systems, each of which is comprised of two alcohols and a hydrocarbon. The new equation compares favorably to previously attempted methods in that it provides a slightly better representation of the ternary Data while utilizing fewer adjustable parameters.

Jose Coca - One of the best experts on this subject based on the ideXlab platform.

  • Isobaric vapor-liquid Equilibrium Data for the binary systems 1,2-dimethoxyethane + alcohols
    Journal of Chemical & Engineering Data, 1991
    Co-Authors: Jose Luis Cabezas, Sagrario Beltrán, Jose Coca
    Abstract:

    Vapor-liquid Equilibrium Data are reported at 101.32 kPa for the binary systems formed by 1,2-dimethoxyethane with the following alcohols: methanol, ethanol, 1-propanol, and 1-butanol. An azeotrope was observed for the systems ethanol+1,2-dimethoxyethane and 1,2-dimethoxyethane+1-propanol. Experimental Data, activity coefficients, fugacity coefficients, and correlation parameters for the Margules, Van Laar, Wilson, NRTL, and UNIQUAC equations are reported

  • Isobaric vapor—liquid Equilibrium Data for furfural with chlorinated hydrocarbons
    Fluid Phase Equilibria, 1991
    Co-Authors: Jose Luis Cabezas, Sagrario Beltrán, Jose Coca
    Abstract:

    Abstract Vapor—liquid Equilibrium Data were measured at 760 mmHg for binary systems of furfural with dichloromethane, 1,2-dichloroethane, trichloroethylene and tetrachloroethylene. A recirculation still was used for this purpose. Liquid-phase activity coefficients were correlated using the Margules, Van Laar, Wilson, NRTL and UNIQUAC models. An analysis of the vapor—liquid Equilibrium Data presented in this work, along with liquid—liquid Equilibrium Data for aqueous solutions of furfural, suggest that 1,2-dichoroethane and trichloroethylene are suitable solvents for the liquid—liquid extraction of furfural from aqueous solutions.

Tetsuo Fuchino - One of the best experts on this subject based on the ideXlab platform.

  • prediction of vapor liquid Equilibrium Data for ternary systems using artificial neural networks
    Fluid Phase Equilibria, 2007
    Co-Authors: Viet D. Nguyen, Raymond R. Tan, Yolanda P. Brondial, Tetsuo Fuchino
    Abstract:

    Abstract Most solvents used in the semiconductor industry are toxic and costly. Thus, the solvents should be recovered for re-use in these processes by distillation methods, and vapor–liquid Equilibrium Data are necessary for the design and operation of distillation columns. These Data can be estimated using activity coefficient models. In this work, artificial neural networks were applied to predict and estimate vapor–liquid Equilibrium Data for ternary systems saturated with salt. The Databases taken from literature were split into training, validating and testing Data and the best architecture was an 8–6–7–4 network. The absolute mean errors for the whole Database were 0.0166, 0.0177, 0.0151 for the vapor mole fraction of components (y1, y2, y3) and 0.74 °C for the bubble point temperature. The artificial neural network predictions showed better agreement with experimental Data than the thermodynamic model predictions.

  • Prediction of vapor–liquid Equilibrium Data for ternary systems using artificial neural networks
    Fluid Phase Equilibria, 2007
    Co-Authors: Viet D. Nguyen, Raymond R. Tan, Yolanda P. Brondial, Tetsuo Fuchino
    Abstract:

    Abstract Most solvents used in the semiconductor industry are toxic and costly. Thus, the solvents should be recovered for re-use in these processes by distillation methods, and vapor–liquid Equilibrium Data are necessary for the design and operation of distillation columns. These Data can be estimated using activity coefficient models. In this work, artificial neural networks were applied to predict and estimate vapor–liquid Equilibrium Data for ternary systems saturated with salt. The Databases taken from literature were split into training, validating and testing Data and the best architecture was an 8–6–7–4 network. The absolute mean errors for the whole Database were 0.0166, 0.0177, 0.0151 for the vapor mole fraction of components (y1, y2, y3) and 0.74 °C for the bubble point temperature. The artificial neural network predictions showed better agreement with experimental Data than the thermodynamic model predictions.