The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform
Alberto Coronas - One of the best experts on this subject based on the ideXlab platform.
-
Thermophysical Properties of 2,2,2-Trifluoroethanol + Tetraethylene Glycol Dimethyl Ether
Journal of Chemical & Engineering Data, 1999Co-Authors: J. Herraiz, F. Olivé, Shemin Zhu, Shubao Shen, Alberto CoronasAbstract:Isothermal P,x data from 303.15 K to 423.15 K, liquid densities from 283.15 K to 423.15 K, and dynamic viscosities from 343.15 K to 393.15 K for the binary system 2,2,2-trifluoroethanol + Tetraethylene Glycol dimethyl ether were measured. The vapor−liquid equilibrium (VLE) data were measured using a static apparatus. VLE data were correlated by the five-parameter NRTL equation, while density and kinematic viscosity data were correlated with temperature and liquid composition using empirical equations. The viscosity data used in the correlation cover the range of 293.15−393.15 K. VLE data indicate that this binary system exhibits large negative deviations from Raoult's law. These mixtures present large exothermic excess molar enthalpies. The excess molar enthalpy calculated using the Gibbs−Helmholtz equation and the NRTL parameters was compared with experimental data existing in the literature.
-
Measurement of the vapor pressure of 2,2,2-trifluoroethanol and Tetraethylene Glycol dimethyl ether by static method
Fluid Phase Equilibria, 1995Co-Authors: Shrirang K. Chaudhari, Kashinath R. Patil, J. Allepús, Alberto CoronasAbstract:New results of vapor pressure are presented for Tetraethylene Glycol dimethyl ether (TEGDME) and 2,2,2-trifluoroethanol (TFE) in the ranges of temperatures from 373.15 to 533.15 K, and 293.15 to 363.15 K, respectively. Measurements were made using the static method. The static vapor pressure apparatus developed is described. For the practical utility, vapor pressure data for TEGDME were fitted to Antoine equation and for TFE to a Wagner-type equation, combining in this case the experimental data with those of Sauermann et al. (1993) to cover a wide temperature range.
-
Vapor-liquid equilibria for methanol + Tetraethylene Glycol dimethyl ether
Journal of Chemical & Engineering Data, 1995Co-Authors: Xavier Esteve, Shrirang K. Chaudhari, Alberto CoronasAbstract:Vapor-liquid equilibrium (P-T-x) for the methanol + Tetraethylene Glycol dimethyl ether binary system were obtained by the static method in the range of temperatures from 293.15 to 423.15 K at 10 K intervals. The modified vapor pressure apparatus used is described. The Kuczynsky method was used to calculate the liquid and vapor composition and the activity coefficients of methanol from the initial composition of the sample and the measured pressure and temperature. The results were correlated by the NRTL and UNIQUAC temperature dependent activity coefficient models. This system shows nearly ideal behavior at 323.15 K, but positive deviations from ideality at lower temperatures and negative deviations at higher temperatures are observed. The activity coefficients become more negative with the increase in temperature and mole fraction of methanol. The excess molar enthalpy using the Gibss-Helmholtz equation and the NRTL and UNIQUAC parameters were calculated at 303.15 K and compared with experimental data. This binary system shows promise as a working pair for high-temperature heat pump applications.
-
Excess volumes and viscosities of the ternary system water-trifluoroethanol-Tetraethylene Glycol dimethyl ether at 303.15 K☆
Thermochimica Acta, 1995Co-Authors: F. Olivé, Kashinath R. Patil, Josefa Fernández, Alberto CoronasAbstract:Densities and kinematic viscosities of the ternary mixture water-trifluoroethanol-Tetraethylene Glycol dimethyl ether have been measured at 303.15 K and atmospheric pressure over the entire range of compositions. Excess molar volumes and excess viscosities were obtained from the experimental results. The excess volumes were negative and excess viscosities were positive, indicating the asymmetric composition dependence of the two thermodynamic properties. The excess volumes have been correlated by the Redlich-Kister equation and the kinematic viscosity data have been fitted using the Stephan and Heckenberger correlation.
-
Experimental and predicted excess enthalpies of the 2,2,2-trifluoroethanol–water–Tetraethylene Glycol dimethyl ether ternary system using binary mixing data
J. Chem. Soc. Faraday Trans., 1995Co-Authors: Enriqueta R. López, Alberto Coronas, Josefa García, José Luis Legido, Josefa FernándezAbstract:Excess enthalpies of the ternary mixture 2,2,2-trifluoroethanol–water–Tetraethylene Glycol dimethyl ether and the corresponding binary mixtures at 298.15 K have been measured using a standard Calvet microcalorimeter. Wilson, NRTL, UNIQUAC and Wang et al. models have been used to correlate the binary excess enthalpies and, using the parameters obtained, to predict ternary excess molar enthalpies, HE. Several empirical equations predicting ternary-mixture properties from the binary-mixing data have been also examined.
Yang-xin Yu - One of the best experts on this subject based on the ideXlab platform.
-
Isobaric vapor-liquid equilibria and excess volumes for the binary mixtures water + sulfolane, water + Tetraethylene Glycol, and benzene + Tetraethylene Glycol
Journal of Chemical & Engineering Data, 2000Co-Authors: Yang-xin YuAbstract:Isobaric vapor−liquid equilibrium data were determined at 101.33 kPa for the binary mixtures of water + sulfolane and water + Tetraethylene Glycol. Calculations of the nonideality of the vapor phase were made with the second virial coefficients obtained from the Hayden−O'Connell method. The boiling points and vapor-phase compositions reported were well correlated by the Wilson, NRTL, and UNIQUAC models. In addition, the densities of binary mixtures of water + sulfolane, water + Tetraethylene Glycol, and benzene + Tetraethylene Glycol were determined over the entire concentration range at 298.15 K and atmospheric pressure by using an oscillating tube densimeter. Excess volumes were calculated for each data point. All mixtures exhibit negative excess volumes with a minimum which occurs at x ≅ 0.5 for the benzene + Tetraethylene Glycol system; it is shifted toward the water-rich region for the water + sulfolane and water + Tetraethylene Glycol systems. The experimental excess volumes were correlated using th...
-
Isobaric vapor-liquid equilibria and excess volumes for the binary mixtures water + sulfolane, water + Tetraethylene Glycol, and benzene + Tetraethylene Glycol
Journal of Chemical & Engineering Data, 2000Co-Authors: Yang-xin YuAbstract:Isobaric vapor−liquid equilibrium data were determined at 101.33 kPa for the binary mixtures of water + sulfolane and water + Tetraethylene Glycol. Calculations of the nonideality of the vapor phase were made with the second virial coefficients obtained from the Hayden−O'Connell method. The boiling points and vapor-phase compositions reported were well correlated by the Wilson, NRTL, and UNIQUAC models. In addition, the densities of binary mixtures of water + sulfolane, water + Tetraethylene Glycol, and benzene + Tetraethylene Glycol were determined over the entire concentration range at 298.15 K and atmospheric pressure by using an oscillating tube densimeter. Excess volumes were calculated for each data point. All mixtures exhibit negative excess volumes with a minimum which occurs at x ≅ 0.5 for the benzene + Tetraethylene Glycol system; it is shifted toward the water-rich region for the water + sulfolane and water + Tetraethylene Glycol systems. The experimental excess volumes were correlated using th...
Guanghua Gao - One of the best experts on this subject based on the ideXlab platform.
-
isobaric vapor liquid equilibria and excess volumes for the binary mixtures water sulfolane water Tetraethylene Glycol and benzene Tetraethylene Glycol
Journal of Chemical & Engineering Data, 2000Co-Authors: Jiangang Liu, Guanghua GaoAbstract:Isobaric vapor−liquid equilibrium data were determined at 101.33 kPa for the binary mixtures of water + sulfolane and water + Tetraethylene Glycol. Calculations of the nonideality of the vapor phase were made with the second virial coefficients obtained from the Hayden−O'Connell method. The boiling points and vapor-phase compositions reported were well correlated by the Wilson, NRTL, and UNIQUAC models. In addition, the densities of binary mixtures of water + sulfolane, water + Tetraethylene Glycol, and benzene + Tetraethylene Glycol were determined over the entire concentration range at 298.15 K and atmospheric pressure by using an oscillating tube densimeter. Excess volumes were calculated for each data point. All mixtures exhibit negative excess volumes with a minimum which occurs at x ≅ 0.5 for the benzene + Tetraethylene Glycol system; it is shifted toward the water-rich region for the water + sulfolane and water + Tetraethylene Glycol systems. The experimental excess volumes were correlated using th...
-
isobaric vapor liquid equilibria of three aromatic hydrocarbon Tetraethylene Glycol binary systems
Fluid Phase Equilibria, 1999Co-Authors: Jiangang Liu, Guanghua GaoAbstract:Abstract Isobaric vapor–liquid equilibrium data have been determined at 101.33 kPa for the binary mixtures of benzene-Tetraethylene Glycol (TeEG), toluene-TeEG and o-xylene-TeEG. The vapor-phase fugacity coefficients were calculated from the virial equation. The thermodynamic consistency of the data has been tested via Herington analysis. The binary parameters for four activity coefficient models (van Laar, Wilson, NRTL and UNIQUAC) have been fitted with the experimental data. A comparison of model performances has been made by using the criterion of root mean square deviations in boiling point and vapor-phase composition.
-
Isobaric vapor–liquid equilibria of three aromatic hydrocarbon-Tetraethylene Glycol binary systems
Fluid Phase Equilibria, 1999Co-Authors: Jiangang Liu, Guanghua GaoAbstract:Abstract Isobaric vapor–liquid equilibrium data have been determined at 101.33 kPa for the binary mixtures of benzene-Tetraethylene Glycol (TeEG), toluene-TeEG and o-xylene-TeEG. The vapor-phase fugacity coefficients were calculated from the virial equation. The thermodynamic consistency of the data has been tested via Herington analysis. The binary parameters for four activity coefficient models (van Laar, Wilson, NRTL and UNIQUAC) have been fitted with the experimental data. A comparison of model performances has been made by using the criterion of root mean square deviations in boiling point and vapor-phase composition.
Jiangang Liu - One of the best experts on this subject based on the ideXlab platform.
-
isobaric vapor liquid equilibria and excess volumes for the binary mixtures water sulfolane water Tetraethylene Glycol and benzene Tetraethylene Glycol
Journal of Chemical & Engineering Data, 2000Co-Authors: Jiangang Liu, Guanghua GaoAbstract:Isobaric vapor−liquid equilibrium data were determined at 101.33 kPa for the binary mixtures of water + sulfolane and water + Tetraethylene Glycol. Calculations of the nonideality of the vapor phase were made with the second virial coefficients obtained from the Hayden−O'Connell method. The boiling points and vapor-phase compositions reported were well correlated by the Wilson, NRTL, and UNIQUAC models. In addition, the densities of binary mixtures of water + sulfolane, water + Tetraethylene Glycol, and benzene + Tetraethylene Glycol were determined over the entire concentration range at 298.15 K and atmospheric pressure by using an oscillating tube densimeter. Excess volumes were calculated for each data point. All mixtures exhibit negative excess volumes with a minimum which occurs at x ≅ 0.5 for the benzene + Tetraethylene Glycol system; it is shifted toward the water-rich region for the water + sulfolane and water + Tetraethylene Glycol systems. The experimental excess volumes were correlated using th...
-
isobaric vapor liquid equilibria of three aromatic hydrocarbon Tetraethylene Glycol binary systems
Fluid Phase Equilibria, 1999Co-Authors: Jiangang Liu, Guanghua GaoAbstract:Abstract Isobaric vapor–liquid equilibrium data have been determined at 101.33 kPa for the binary mixtures of benzene-Tetraethylene Glycol (TeEG), toluene-TeEG and o-xylene-TeEG. The vapor-phase fugacity coefficients were calculated from the virial equation. The thermodynamic consistency of the data has been tested via Herington analysis. The binary parameters for four activity coefficient models (van Laar, Wilson, NRTL and UNIQUAC) have been fitted with the experimental data. A comparison of model performances has been made by using the criterion of root mean square deviations in boiling point and vapor-phase composition.
-
Isobaric vapor–liquid equilibria of three aromatic hydrocarbon-Tetraethylene Glycol binary systems
Fluid Phase Equilibria, 1999Co-Authors: Jiangang Liu, Guanghua GaoAbstract:Abstract Isobaric vapor–liquid equilibrium data have been determined at 101.33 kPa for the binary mixtures of benzene-Tetraethylene Glycol (TeEG), toluene-TeEG and o-xylene-TeEG. The vapor-phase fugacity coefficients were calculated from the virial equation. The thermodynamic consistency of the data has been tested via Herington analysis. The binary parameters for four activity coefficient models (van Laar, Wilson, NRTL and UNIQUAC) have been fitted with the experimental data. A comparison of model performances has been made by using the criterion of root mean square deviations in boiling point and vapor-phase composition.
Philip Loldrup Fosbøl - One of the best experts on this subject based on the ideXlab platform.
-
Solubility of NaHCO3 in Systems of Aqueous Glycols (Monoethylene Glycol, Diethylene Glycol, Triethylene Glycol, and Tetraethylene Glycol): The Role of Solvation
Journal of Chemical & Engineering Data, 2020Co-Authors: Randi Neerup, Sebastian N. B. Villadsen, Kaj Thomsen, Philip Loldrup FosbølAbstract:The solubility and density of NaHCO3 in the systems: monoethylene Glycol (MEG)–water, diethylene Glycol (DEG)–water, triethylene Glycol (TEG)–water, and Tetraethylene Glycol (TeEG)–water have been ...
