The Experts below are selected from a list of 32280 Experts worldwide ranked by ideXlab platform
José J. Segovia - One of the best experts on this subject based on the ideXlab platform.
-
Vapor-liquid equilibria and excess enthalpies of the binary systems 1-pentanol or 2-pentanol and 1-hexene or 1,2,4-trimethylbenzene for the development of biofuels
Fluid Phase Equilibria, 2018Co-Authors: Alejandro Moreau, José J. Segovia, M. Dolores Bermejo, M. Carmen MartínAbstract:Abstract Accurate experimental data of vapor-liquid equilibria (VLE) and excess enthalpies are reported for four binary systems: (1-pentanol + 1-hexene), (2-pentanol + 1-hexene), (1-pentanol + 1,2,4-trimethylbenzene) and (2-pentanol + 1,2,4-trimethylbenzene). An Isothermal total pressure cell was used for measuring VLE at T = 313.15 K. The data were fitted using Margules, Wilson and NRTL equations. Excess enthalpies were measured at two different temperatures T = (298.15 and 313.15) K using an Isothermal Flow calorimeter and were correlated by the Redlich-Kister equation. All systems present a positive deviation from the Raoult's Law. An azeotropic behavior with maximum pressure is observed for the mixtures 1-pentanol or 2-pentanol with 1,2,4-trimethylbenzene. In addition, an endothermic behavior, which increases with temperature, is obtained when the alcohols are mixed with these hydrocarbons.
-
Thermodynamics properties, VLE and HE, of the systems 2-pentanol and cyclohexane or methylbenzene for contributing to the knowledge of new biofuels
Fluid Phase Equilibria, 2016Co-Authors: Alejandro Moreau, José J. Segovia, Jorge Rubio, M. Carmen MartínAbstract:Abstract Accurate experimental data of vapour–liquid equilibria (VLE) and excess enthalpies (HE) are reported for the binary systems (2-pentanol + cyclohexane) and (2-pentanol + methylbenzene). An Isothermal total pressure cell was used for measuring the VLE at T = 313.15 K. The data were correlated using Margules, Wilson, NRTL and UNIQUAC equations. The excess enthalpies were measured at two different temperatures T = (298.15 and 313.15) K using an Isothermal Flow calorimeter and were correlated by the Redlich–Kister equation. The binary system 2-pentanol + methylbenzene exhibits an azeotrope and both systems present a positive deviation from the ideality. Furthermore, an endothermic behaviour is observed when 2-pentanol is mixed with these hydrocarbons.
-
thermodynamic behaviour of second generation biofuels vapour liquid equilibria and excess enthalpies of the binary mixtures 2 pentanol and n heptane or 2 2 4 trimethylpentane
Fluid Phase Equilibria, 2014Co-Authors: Alejandro Moreau, José J. Segovia, Rosa M Villamanan, Carmen M MartinAbstract:Abstract Accurate experimental data of vapour–liquid equilibria (VLE) and excess enthalpies are reported for the binary systems (2-pentanol + 2,2,4-trimethylpentane) and (2-pentanol + n-heptane). An Isothermal total pressure cell was used for measuring the VLE at T = 313.15 K. The data were correlated using Margules, Wilson, NRTL and UNIQUAC equations. The excess enthalpies were measured at two different temperatures T = (298.15 and 313.15) K using an Isothermal Flow calorimeter and were correlated by the Redlich–Kister equation. Both binary systems exhibit a positive deviation from the ideality with azeotropes, and an endothermic behaviour has been observed when the 2-pentanol is mixed with these hydrocarbons.
-
thermodynamic characterization of second generation biofuels vapour liquid equilibria and excess enthalpies of the binary mixtures 1 pentanol and cyclohexane or toluene
Fluid Phase Equilibria, 2012Co-Authors: Alejandro Moreau, Carmen M Martin, Cesar R Chamorro, José J. SegoviaAbstract:Abstract The paper reports accurate experimental data of vapour–liquid equilibria at T = 313.15 K, using an Isothermal total pressure cell, for the binary systems (1-pentanol + cyclohexane) and (1-pentanol + toluene). The data were correlated using Margules, Wilson, NRTL and UNIQUAC equations. Also, the enthalpies of mixing were measured for the same systems at two different temperatures T = (298.15 and 313.15) K using an Isothermal Flow calorimeter and the excess enthalpies were correlated by the Redlich–Kister equation. The thermodynamic behaviour of both systems is discussed.
-
ether alcohol hydrocarbon mixtures in fuels and bio fuels excess enthalpies of binary mixtures containing dibutyl ether dbe or 1 butanol and 1 hexene or methylcyclohexane or toluene or cyclohexane or 2 2 4 trimethylpentane at 298 15 k and 313 15 k
Fluid Phase Equilibria, 2012Co-Authors: Fernando Aguilar, José J. Segovia, Fatima Ezzahrae Mhamdi Alaoui, Miguel A Villamanan, Eduardo A MonteroAbstract:Abstract New experimental excess molar enthalpy data (304 points) of the binary systems dibutyl ether (DBE) or 1-butanol and 1-hexene, or methylcyclohexane or toluene at 298.15 K and 313.15 K, and DBE or 1-butanol and cyclohexane or 2,2,4-trimethylpentane (TMP) at 313.15 K at atmospheric pressure are reported. A quasi-Isothermal Flow calorimeter has been used to make the measurements. All the binary systems show endothermic character except the system DBE + 1-hexene at both temperatures. The experimental data for the binary systems have been fitted using the Redlich–Kister rational equation. The values of the standard deviation indicate good agreement between the experimental results and those calculated from the equations.
Alejandro Moreau - One of the best experts on this subject based on the ideXlab platform.
-
Vapor-liquid equilibria and excess enthalpies of the binary systems 1-pentanol or 2-pentanol and 1-hexene or 1,2,4-trimethylbenzene for the development of biofuels
Fluid Phase Equilibria, 2018Co-Authors: Alejandro Moreau, José J. Segovia, M. Dolores Bermejo, M. Carmen MartínAbstract:Abstract Accurate experimental data of vapor-liquid equilibria (VLE) and excess enthalpies are reported for four binary systems: (1-pentanol + 1-hexene), (2-pentanol + 1-hexene), (1-pentanol + 1,2,4-trimethylbenzene) and (2-pentanol + 1,2,4-trimethylbenzene). An Isothermal total pressure cell was used for measuring VLE at T = 313.15 K. The data were fitted using Margules, Wilson and NRTL equations. Excess enthalpies were measured at two different temperatures T = (298.15 and 313.15) K using an Isothermal Flow calorimeter and were correlated by the Redlich-Kister equation. All systems present a positive deviation from the Raoult's Law. An azeotropic behavior with maximum pressure is observed for the mixtures 1-pentanol or 2-pentanol with 1,2,4-trimethylbenzene. In addition, an endothermic behavior, which increases with temperature, is obtained when the alcohols are mixed with these hydrocarbons.
-
Thermodynamics properties, VLE and HE, of the systems 2-pentanol and cyclohexane or methylbenzene for contributing to the knowledge of new biofuels
Fluid Phase Equilibria, 2016Co-Authors: Alejandro Moreau, José J. Segovia, Jorge Rubio, M. Carmen MartínAbstract:Abstract Accurate experimental data of vapour–liquid equilibria (VLE) and excess enthalpies (HE) are reported for the binary systems (2-pentanol + cyclohexane) and (2-pentanol + methylbenzene). An Isothermal total pressure cell was used for measuring the VLE at T = 313.15 K. The data were correlated using Margules, Wilson, NRTL and UNIQUAC equations. The excess enthalpies were measured at two different temperatures T = (298.15 and 313.15) K using an Isothermal Flow calorimeter and were correlated by the Redlich–Kister equation. The binary system 2-pentanol + methylbenzene exhibits an azeotrope and both systems present a positive deviation from the ideality. Furthermore, an endothermic behaviour is observed when 2-pentanol is mixed with these hydrocarbons.
-
thermodynamic behaviour of second generation biofuels vapour liquid equilibria and excess enthalpies of the binary mixtures 2 pentanol and n heptane or 2 2 4 trimethylpentane
Fluid Phase Equilibria, 2014Co-Authors: Alejandro Moreau, José J. Segovia, Rosa M Villamanan, Carmen M MartinAbstract:Abstract Accurate experimental data of vapour–liquid equilibria (VLE) and excess enthalpies are reported for the binary systems (2-pentanol + 2,2,4-trimethylpentane) and (2-pentanol + n-heptane). An Isothermal total pressure cell was used for measuring the VLE at T = 313.15 K. The data were correlated using Margules, Wilson, NRTL and UNIQUAC equations. The excess enthalpies were measured at two different temperatures T = (298.15 and 313.15) K using an Isothermal Flow calorimeter and were correlated by the Redlich–Kister equation. Both binary systems exhibit a positive deviation from the ideality with azeotropes, and an endothermic behaviour has been observed when the 2-pentanol is mixed with these hydrocarbons.
-
thermodynamic characterization of second generation biofuels vapour liquid equilibria and excess enthalpies of the binary mixtures 1 pentanol and cyclohexane or toluene
Fluid Phase Equilibria, 2012Co-Authors: Alejandro Moreau, Carmen M Martin, Cesar R Chamorro, José J. SegoviaAbstract:Abstract The paper reports accurate experimental data of vapour–liquid equilibria at T = 313.15 K, using an Isothermal total pressure cell, for the binary systems (1-pentanol + cyclohexane) and (1-pentanol + toluene). The data were correlated using Margules, Wilson, NRTL and UNIQUAC equations. Also, the enthalpies of mixing were measured for the same systems at two different temperatures T = (298.15 and 313.15) K using an Isothermal Flow calorimeter and the excess enthalpies were correlated by the Redlich–Kister equation. The thermodynamic behaviour of both systems is discussed.
M. Carmen Martín - One of the best experts on this subject based on the ideXlab platform.
-
Vapor-liquid equilibria and excess enthalpies of the binary systems 1-pentanol or 2-pentanol and 1-hexene or 1,2,4-trimethylbenzene for the development of biofuels
Fluid Phase Equilibria, 2018Co-Authors: Alejandro Moreau, José J. Segovia, M. Dolores Bermejo, M. Carmen MartínAbstract:Abstract Accurate experimental data of vapor-liquid equilibria (VLE) and excess enthalpies are reported for four binary systems: (1-pentanol + 1-hexene), (2-pentanol + 1-hexene), (1-pentanol + 1,2,4-trimethylbenzene) and (2-pentanol + 1,2,4-trimethylbenzene). An Isothermal total pressure cell was used for measuring VLE at T = 313.15 K. The data were fitted using Margules, Wilson and NRTL equations. Excess enthalpies were measured at two different temperatures T = (298.15 and 313.15) K using an Isothermal Flow calorimeter and were correlated by the Redlich-Kister equation. All systems present a positive deviation from the Raoult's Law. An azeotropic behavior with maximum pressure is observed for the mixtures 1-pentanol or 2-pentanol with 1,2,4-trimethylbenzene. In addition, an endothermic behavior, which increases with temperature, is obtained when the alcohols are mixed with these hydrocarbons.
-
Thermodynamics properties, VLE and HE, of the systems 2-pentanol and cyclohexane or methylbenzene for contributing to the knowledge of new biofuels
Fluid Phase Equilibria, 2016Co-Authors: Alejandro Moreau, José J. Segovia, Jorge Rubio, M. Carmen MartínAbstract:Abstract Accurate experimental data of vapour–liquid equilibria (VLE) and excess enthalpies (HE) are reported for the binary systems (2-pentanol + cyclohexane) and (2-pentanol + methylbenzene). An Isothermal total pressure cell was used for measuring the VLE at T = 313.15 K. The data were correlated using Margules, Wilson, NRTL and UNIQUAC equations. The excess enthalpies were measured at two different temperatures T = (298.15 and 313.15) K using an Isothermal Flow calorimeter and were correlated by the Redlich–Kister equation. The binary system 2-pentanol + methylbenzene exhibits an azeotrope and both systems present a positive deviation from the ideality. Furthermore, an endothermic behaviour is observed when 2-pentanol is mixed with these hydrocarbons.
Jurgen Gmehling - One of the best experts on this subject based on the ideXlab platform.
-
Isothermal vapour liquid equilibria and excess enthalpies for the binary mixtures containing an isomeric chlorobutane and diisopropyl ether
Fluid Phase Equilibria, 2011Co-Authors: Diego Montano, Jurgen Gmehling, Ignacio Gascon, Rainer Bolts, Carlos LafuenteAbstract:Abstract Isothermal vapour–liquid equilibria for the four binary mixtures formed by an isomer of chlorobutane (1-chlorobutane, 2-chlorobutane, 2-methyl-1-chloropropane, or 2-methyl-2-chloropropane) and diisopropyl ether has been studied at T = 288.15 K, 298.15 K, and 308.15 K. The experimental data have been satisfactorily checked for thermodynamic consistency using the method of van Ness. The Isothermal vapour–liquid equilibrium data have been correlated using the Wilson equation and excess Gibbs energies have been calculated. Moreover, we have measured excess enthalpies at T = 298.15 K using an Isothermal Flow calorimeter; combining these excess enthalpies with excess Gibbs energies the corresponding entropic contributions to excess Gibbs energy have been obtained. The group contribution method UNIFAC has been used to predict the phase equilibrium behaviour of the mixtures at Isothermal conditions.
-
vapor liquid liquid equilibria azeotropic and excess enthalpy data for the binary system n undecane propionamide and pure component vapor pressure and density data for propionamide
Journal of Chemical & Engineering Data, 2004Co-Authors: Sven Horstmann, Kai Fischer, Jurgen GmehlingAbstract:Vapor−liquid−liquid equilibria (VLLE), azeotropic, and excess enthalpy (HE) data for the binary system n-undecane + propionamide were measured at temperatures from 359.25 to 416.65 K. Additionally, pure-component vapor pressure and density data for propionamide were determined experimentally. The LLE and VLLE measurements were performed in a stirred glass cell and in a static equilibrium cell with a capability to take small samples from the different phases by using pneumatic micro samplers. For the HE measurements, an Isothermal Flow calorimeter was used, and the azeotropic data were obtained from distillation experiments using a micro spinning band column. The pure-component vapor pressures and densities were measured with the help of the dynamic method (ebulliometer) and a vibrating tube densimeter, respectively. To the experimental mixture data from this work linear temperature-dependent interaction parameters for the NRTL model were fitted. They can be used to represent the phase equilibrium behavior...
-
vapor pressure vapor liquid equilibrium and excess enthalpy data for compounds and binary subsystems of the chlorohydrin process for propylene oxide production
Journal of Chemical & Engineering Data, 2001Co-Authors: Sven Horstmann, Kai Fischer, Hergen Gardeler, And Frank Koster, Jurgen GmehlingAbstract:Vapor−liquid equilibrium (VLE), excess enthalpy (HE), and vapor pressure (Pis) data for eight binary systems containing cis-1-chloropropene, trans-1-chloropropene, 1,2-dichloropropane, 1,2-propanediol, 1,2-propylene glycol diacetate, propylene oxide, and water are presented in a temperature range from 276 to 368 K. The VLE and vapor pressure data were obtained by means of a computer-controlled static apparatus, and the heat of mixing data were measured using an Isothermal Flow calorimeter. Temperature-dependent NRTL interaction parameters were regressed by a simultaneous correlation of the experimental VLE and HE data. These parameters are required for a proper simulation of the different separation steps in the chlorohydrin process for the production of propylene oxide.
-
excess molar enthalpies of fluorobenzene or trifluoromethylbenzene or iodoethane methanol or toluene at the temperature 313 15 k and pressure 0 7 mpa
The Journal of Chemical Thermodynamics, 1993Co-Authors: Z. Atik, B. Meents, Jurgen GmehlingAbstract:Abstract The excess molar enthalpies of (fluorobenzene or trifluoromethylbenzene or iodoethane + methanol or toluene) have been measured at the temperature 313.15 K and pressure 0.7 MPa with an Isothermal Flow-calorimeter. All methanolic mixtures have positive H E m with very small negative values towards low fluorohydrocarbon mole fractions, whereas toluene mixtures show negative H E m with fluorobenzene and positive H E m with trifluoromethylbenzene and iodoethane.
Carmen M Martin - One of the best experts on this subject based on the ideXlab platform.
-
thermodynamic behaviour of second generation biofuels vapour liquid equilibria and excess enthalpies of the binary mixtures 2 pentanol and n heptane or 2 2 4 trimethylpentane
Fluid Phase Equilibria, 2014Co-Authors: Alejandro Moreau, José J. Segovia, Rosa M Villamanan, Carmen M MartinAbstract:Abstract Accurate experimental data of vapour–liquid equilibria (VLE) and excess enthalpies are reported for the binary systems (2-pentanol + 2,2,4-trimethylpentane) and (2-pentanol + n-heptane). An Isothermal total pressure cell was used for measuring the VLE at T = 313.15 K. The data were correlated using Margules, Wilson, NRTL and UNIQUAC equations. The excess enthalpies were measured at two different temperatures T = (298.15 and 313.15) K using an Isothermal Flow calorimeter and were correlated by the Redlich–Kister equation. Both binary systems exhibit a positive deviation from the ideality with azeotropes, and an endothermic behaviour has been observed when the 2-pentanol is mixed with these hydrocarbons.
-
thermodynamic characterization of second generation biofuels vapour liquid equilibria and excess enthalpies of the binary mixtures 1 pentanol and cyclohexane or toluene
Fluid Phase Equilibria, 2012Co-Authors: Alejandro Moreau, Carmen M Martin, Cesar R Chamorro, José J. SegoviaAbstract:Abstract The paper reports accurate experimental data of vapour–liquid equilibria at T = 313.15 K, using an Isothermal total pressure cell, for the binary systems (1-pentanol + cyclohexane) and (1-pentanol + toluene). The data were correlated using Margules, Wilson, NRTL and UNIQUAC equations. Also, the enthalpies of mixing were measured for the same systems at two different temperatures T = (298.15 and 313.15) K using an Isothermal Flow calorimeter and the excess enthalpies were correlated by the Redlich–Kister equation. The thermodynamic behaviour of both systems is discussed.