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Mehmet Bilgin - One of the best experts on this subject based on the ideXlab platform.
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liquid phase equilibria of water propionic acid Oleyl Alcohol ternary system at several temperatures
Fluid Phase Equilibria, 2006Co-Authors: Mehmet Bilgin, Çiğdem ArısoyAbstract:Abstract (Liquid–liquid) equilibrium (LLE) data are investigated for mixtures of (water + propionic acid + Oleyl Alcohol) at 298.15, 308.15 and 318.15 K and atmospheric pressure. The solubility curves and the tie-line end compositions of liquid phases at equilibrium were determined, and the tie-line results were compared with the data predicted by the UNIFAC method. The phase diagrams for the ternary mixtures including both the experimental and correlated tie-lines are presented. The distribution coefficients and the selectivity factors for the immiscibility region are calculated to evaluate the effect of temperature change. The reliability of the experimental tie-lines was confirmed by using Othmer–Tobias correlation. It is concluded that Oleyl Alcohol may serve as an adequate solvent to extract propionic acid from its dilute aqueous solutions. The UNIFAC model correlates the LLE data for 298.15, 308.15 and 318.15 K with a root mean square deviation of 5.89, 6.46, and 6.69%, respectively, between the observed and calculated mole concentrations.
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phase equilibria of liquid water butyric acid Oleyl Alcohol ternary system
The Journal of Chemical Thermodynamics, 2006Co-Authors: Mehmet BilginAbstract:Abstract (Liquid + liquid) equilibrium (LLE) data for the ternary system of (water + butyric acid + Oleyl Alcohol) at T = (298.15, 308.15, and 318.15) K are reported. Complete phase diagrams were obtained by determining solubility and the tie-line data. The reliability of the experimental tie lines was confirmed by using Othmer–Tobias correlation. The UNIFAC method was used to predict the phase equilibrium data. The phase diagrams for the ternary mixtures including both the experimental and correlated tie lines are presented. Distribution coefficients and separation factors were evaluated for the immiscibility region. A comparison of the solvent extracting capability was made with respect to distribution coefficients, separation factors, and solvent-free selectivity bases for T = (298.15, 308.15, and 318.15) K. It is concluded that Oleyl Alcohol may serve as an adequate solvent to extract butyric acid from its dilute aqueous solutions.
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Liquid phase equilibria of (water + propionic acid + Oleyl Alcohol) ternary system at several temperatures
Fluid Phase Equilibria, 2006Co-Authors: Mehmet Bilgin, Çiğdem ArısoyAbstract:Abstract (Liquid–liquid) equilibrium (LLE) data are investigated for mixtures of (water + propionic acid + Oleyl Alcohol) at 298.15, 308.15 and 318.15 K and atmospheric pressure. The solubility curves and the tie-line end compositions of liquid phases at equilibrium were determined, and the tie-line results were compared with the data predicted by the UNIFAC method. The phase diagrams for the ternary mixtures including both the experimental and correlated tie-lines are presented. The distribution coefficients and the selectivity factors for the immiscibility region are calculated to evaluate the effect of temperature change. The reliability of the experimental tie-lines was confirmed by using Othmer–Tobias correlation. It is concluded that Oleyl Alcohol may serve as an adequate solvent to extract propionic acid from its dilute aqueous solutions. The UNIFAC model correlates the LLE data for 298.15, 308.15 and 318.15 K with a root mean square deviation of 5.89, 6.46, and 6.69%, respectively, between the observed and calculated mole concentrations.
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Phase equilibria of liquid (water + butyric acid + Oleyl Alcohol) ternary system
The Journal of Chemical Thermodynamics, 2006Co-Authors: Mehmet BilginAbstract:Abstract (Liquid + liquid) equilibrium (LLE) data for the ternary system of (water + butyric acid + Oleyl Alcohol) at T = (298.15, 308.15, and 318.15) K are reported. Complete phase diagrams were obtained by determining solubility and the tie-line data. The reliability of the experimental tie lines was confirmed by using Othmer–Tobias correlation. The UNIFAC method was used to predict the phase equilibrium data. The phase diagrams for the ternary mixtures including both the experimental and correlated tie lines are presented. Distribution coefficients and separation factors were evaluated for the immiscibility region. A comparison of the solvent extracting capability was made with respect to distribution coefficients, separation factors, and solvent-free selectivity bases for T = (298.15, 308.15, and 318.15) K. It is concluded that Oleyl Alcohol may serve as an adequate solvent to extract butyric acid from its dilute aqueous solutions.
Makoto Aratono - One of the best experts on this subject based on the ideXlab platform.
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Aggregate formation in oil and adsorption at oil/water interface: thermodynamics and its application to the Oleyl Alcohol system
Journal of colloid and interface science, 2004Co-Authors: Ryo Murakami, Youichi Takata, Akio Ohta, Takanori Takiue, Makoto AratonoAbstract:The thermodynamic equations for examining aggregate formation in an oil phase and adsorption at the oil/water interface of a nonionic solute were derived. The total differentials of chemical potentials of species and the oil/water interfacial tension were expressed as functions of temperature, pressure, and the total concentration of solute in the oil phase after explicit consideration of aggregate formation. The partial derivatives of the chemical potentials and the interfacial tension with respect to the independent variables were found to provide the thermodynamic quantities of aggregate formation and adsorption from oil phase to the interface by introducing the concept of an ideally dilute associated solution. These equations were applied to the cyclohexane solution of Oleyl Alcohol/water system, and the adsorption and aggregate formation was examined.
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aggregate formation in oil and adsorption at oil water interface thermodynamics and its application to the Oleyl Alcohol system
Journal of Colloid and Interface Science, 2004Co-Authors: Ryo Murakami, Youichi Takata, Akio Ohta, Takanori Takiue, Makoto AratonoAbstract:The thermodynamic equations for examining aggregate formation in an oil phase and adsorption at the oil/water interface of a nonionic solute were derived. The total differentials of chemical potentials of species and the oil/water interfacial tension were expressed as functions of temperature, pressure, and the total concentration of solute in the oil phase after explicit consideration of aggregate formation. The partial derivatives of the chemical potentials and the interfacial tension with respect to the independent variables were found to provide the thermodynamic quantities of aggregate formation and adsorption from oil phase to the interface by introducing the concept of an ideally dilute associated solution. These equations were applied to the cyclohexane solution of Oleyl Alcohol/water system, and the adsorption and aggregate formation was examined.
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thermodynamic study on the adsorption of Oleyl Alcohol at oil water interface
Langmuir, 2002Co-Authors: Youichi Takata, Ryo Murakami, Masao Suzuki, Takanori Takiue, Junya Taura, Tomoyuki Maki, Kotaro Mitsutake, Makoto AratonoAbstract:The interfacial tension γ of the hexane solution of Oleyl Alcohol against water was measured as a function of temperature T and molality m1 under atmospheric pressure. The entropy change associated with the adsorption Δs was dependent on both temperature and molality below about 35 mmol kg-1 while independent of both those above about 35 mmol kg-1. The former is responsible for the contact of the double bond of Oleyl Alcohol with water at the hexane/water interface, but the latter is responsible for the similarity of the aggregates, which are formed by the Alcohol molecules in their hexane solution, to the adsorbed films in the situation that hydrogen bonds are formed between the Alcohol molecules. Considering the aggregate formation and the thermodynamic equation used, it was found that the decrease of the interfacial density Γ1H at a high concentration region is an artifact introduced by the assumption of the ideal solution at that region. Furthermore, by drawing the interfacial pressure π versus the me...
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Calorimetric studies of aggregate formation of Oleyl Alcohol in oil solutions
The Journal of Physical Chemistry B, 2002Co-Authors: Ryo Murakami, Youichi Takata, Akio Ohta, Masao Suzuki, Takanori Takiue, Makoto AratonoAbstract:The enthalpies of mixing of Oleyl Alcohol and oils (cyclohexane, benzene) were measured as a function of the concentration at fixed temperatures by the use of a high-accuracy isothermal calorimeter...
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Thermodynamic Study on the Adsorption of Oleyl Alcohol at Oil/Water Interface
Langmuir, 2002Co-Authors: Youichi Takata, Ryo Murakami, Masao Suzuki, Takanori Takiue, Junya Taura, Tomoyuki Maki, Kotaro Mitsutake, Makoto AratonoAbstract:The interfacial tension γ of the hexane solution of Oleyl Alcohol against water was measured as a function of temperature T and molality m1 under atmospheric pressure. The entropy change associated with the adsorption Δs was dependent on both temperature and molality below about 35 mmol kg-1 while independent of both those above about 35 mmol kg-1. The former is responsible for the contact of the double bond of Oleyl Alcohol with water at the hexane/water interface, but the latter is responsible for the similarity of the aggregates, which are formed by the Alcohol molecules in their hexane solution, to the adsorbed films in the situation that hydrogen bonds are formed between the Alcohol molecules. Considering the aggregate formation and the thermodynamic equation used, it was found that the decrease of the interfacial density Γ1H at a high concentration region is an artifact introduced by the assumption of the ideal solution at that region. Furthermore, by drawing the interfacial pressure π versus the me...
Youichi Takata - One of the best experts on this subject based on the ideXlab platform.
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Aggregate formation in oil and adsorption at oil/water interface: thermodynamics and its application to the Oleyl Alcohol system
Journal of colloid and interface science, 2004Co-Authors: Ryo Murakami, Youichi Takata, Akio Ohta, Takanori Takiue, Makoto AratonoAbstract:The thermodynamic equations for examining aggregate formation in an oil phase and adsorption at the oil/water interface of a nonionic solute were derived. The total differentials of chemical potentials of species and the oil/water interfacial tension were expressed as functions of temperature, pressure, and the total concentration of solute in the oil phase after explicit consideration of aggregate formation. The partial derivatives of the chemical potentials and the interfacial tension with respect to the independent variables were found to provide the thermodynamic quantities of aggregate formation and adsorption from oil phase to the interface by introducing the concept of an ideally dilute associated solution. These equations were applied to the cyclohexane solution of Oleyl Alcohol/water system, and the adsorption and aggregate formation was examined.
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aggregate formation in oil and adsorption at oil water interface thermodynamics and its application to the Oleyl Alcohol system
Journal of Colloid and Interface Science, 2004Co-Authors: Ryo Murakami, Youichi Takata, Akio Ohta, Takanori Takiue, Makoto AratonoAbstract:The thermodynamic equations for examining aggregate formation in an oil phase and adsorption at the oil/water interface of a nonionic solute were derived. The total differentials of chemical potentials of species and the oil/water interfacial tension were expressed as functions of temperature, pressure, and the total concentration of solute in the oil phase after explicit consideration of aggregate formation. The partial derivatives of the chemical potentials and the interfacial tension with respect to the independent variables were found to provide the thermodynamic quantities of aggregate formation and adsorption from oil phase to the interface by introducing the concept of an ideally dilute associated solution. These equations were applied to the cyclohexane solution of Oleyl Alcohol/water system, and the adsorption and aggregate formation was examined.
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thermodynamic study on the adsorption of Oleyl Alcohol at oil water interface
Langmuir, 2002Co-Authors: Youichi Takata, Ryo Murakami, Masao Suzuki, Takanori Takiue, Junya Taura, Tomoyuki Maki, Kotaro Mitsutake, Makoto AratonoAbstract:The interfacial tension γ of the hexane solution of Oleyl Alcohol against water was measured as a function of temperature T and molality m1 under atmospheric pressure. The entropy change associated with the adsorption Δs was dependent on both temperature and molality below about 35 mmol kg-1 while independent of both those above about 35 mmol kg-1. The former is responsible for the contact of the double bond of Oleyl Alcohol with water at the hexane/water interface, but the latter is responsible for the similarity of the aggregates, which are formed by the Alcohol molecules in their hexane solution, to the adsorbed films in the situation that hydrogen bonds are formed between the Alcohol molecules. Considering the aggregate formation and the thermodynamic equation used, it was found that the decrease of the interfacial density Γ1H at a high concentration region is an artifact introduced by the assumption of the ideal solution at that region. Furthermore, by drawing the interfacial pressure π versus the me...
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Calorimetric studies of aggregate formation of Oleyl Alcohol in oil solutions
The Journal of Physical Chemistry B, 2002Co-Authors: Ryo Murakami, Youichi Takata, Akio Ohta, Masao Suzuki, Takanori Takiue, Makoto AratonoAbstract:The enthalpies of mixing of Oleyl Alcohol and oils (cyclohexane, benzene) were measured as a function of the concentration at fixed temperatures by the use of a high-accuracy isothermal calorimeter...
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Thermodynamic Study on the Adsorption of Oleyl Alcohol at Oil/Water Interface
Langmuir, 2002Co-Authors: Youichi Takata, Ryo Murakami, Masao Suzuki, Takanori Takiue, Junya Taura, Tomoyuki Maki, Kotaro Mitsutake, Makoto AratonoAbstract:The interfacial tension γ of the hexane solution of Oleyl Alcohol against water was measured as a function of temperature T and molality m1 under atmospheric pressure. The entropy change associated with the adsorption Δs was dependent on both temperature and molality below about 35 mmol kg-1 while independent of both those above about 35 mmol kg-1. The former is responsible for the contact of the double bond of Oleyl Alcohol with water at the hexane/water interface, but the latter is responsible for the similarity of the aggregates, which are formed by the Alcohol molecules in their hexane solution, to the adsorbed films in the situation that hydrogen bonds are formed between the Alcohol molecules. Considering the aggregate formation and the thermodynamic equation used, it was found that the decrease of the interfacial density Γ1H at a high concentration region is an artifact introduced by the assumption of the ideal solution at that region. Furthermore, by drawing the interfacial pressure π versus the me...
Ryo Murakami - One of the best experts on this subject based on the ideXlab platform.
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Aggregate formation in oil and adsorption at oil/water interface: thermodynamics and its application to the Oleyl Alcohol system
Journal of colloid and interface science, 2004Co-Authors: Ryo Murakami, Youichi Takata, Akio Ohta, Takanori Takiue, Makoto AratonoAbstract:The thermodynamic equations for examining aggregate formation in an oil phase and adsorption at the oil/water interface of a nonionic solute were derived. The total differentials of chemical potentials of species and the oil/water interfacial tension were expressed as functions of temperature, pressure, and the total concentration of solute in the oil phase after explicit consideration of aggregate formation. The partial derivatives of the chemical potentials and the interfacial tension with respect to the independent variables were found to provide the thermodynamic quantities of aggregate formation and adsorption from oil phase to the interface by introducing the concept of an ideally dilute associated solution. These equations were applied to the cyclohexane solution of Oleyl Alcohol/water system, and the adsorption and aggregate formation was examined.
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aggregate formation in oil and adsorption at oil water interface thermodynamics and its application to the Oleyl Alcohol system
Journal of Colloid and Interface Science, 2004Co-Authors: Ryo Murakami, Youichi Takata, Akio Ohta, Takanori Takiue, Makoto AratonoAbstract:The thermodynamic equations for examining aggregate formation in an oil phase and adsorption at the oil/water interface of a nonionic solute were derived. The total differentials of chemical potentials of species and the oil/water interfacial tension were expressed as functions of temperature, pressure, and the total concentration of solute in the oil phase after explicit consideration of aggregate formation. The partial derivatives of the chemical potentials and the interfacial tension with respect to the independent variables were found to provide the thermodynamic quantities of aggregate formation and adsorption from oil phase to the interface by introducing the concept of an ideally dilute associated solution. These equations were applied to the cyclohexane solution of Oleyl Alcohol/water system, and the adsorption and aggregate formation was examined.
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thermodynamic study on the adsorption of Oleyl Alcohol at oil water interface
Langmuir, 2002Co-Authors: Youichi Takata, Ryo Murakami, Masao Suzuki, Takanori Takiue, Junya Taura, Tomoyuki Maki, Kotaro Mitsutake, Makoto AratonoAbstract:The interfacial tension γ of the hexane solution of Oleyl Alcohol against water was measured as a function of temperature T and molality m1 under atmospheric pressure. The entropy change associated with the adsorption Δs was dependent on both temperature and molality below about 35 mmol kg-1 while independent of both those above about 35 mmol kg-1. The former is responsible for the contact of the double bond of Oleyl Alcohol with water at the hexane/water interface, but the latter is responsible for the similarity of the aggregates, which are formed by the Alcohol molecules in their hexane solution, to the adsorbed films in the situation that hydrogen bonds are formed between the Alcohol molecules. Considering the aggregate formation and the thermodynamic equation used, it was found that the decrease of the interfacial density Γ1H at a high concentration region is an artifact introduced by the assumption of the ideal solution at that region. Furthermore, by drawing the interfacial pressure π versus the me...
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Calorimetric studies of aggregate formation of Oleyl Alcohol in oil solutions
The Journal of Physical Chemistry B, 2002Co-Authors: Ryo Murakami, Youichi Takata, Akio Ohta, Masao Suzuki, Takanori Takiue, Makoto AratonoAbstract:The enthalpies of mixing of Oleyl Alcohol and oils (cyclohexane, benzene) were measured as a function of the concentration at fixed temperatures by the use of a high-accuracy isothermal calorimeter...
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Thermodynamic Study on the Adsorption of Oleyl Alcohol at Oil/Water Interface
Langmuir, 2002Co-Authors: Youichi Takata, Ryo Murakami, Masao Suzuki, Takanori Takiue, Junya Taura, Tomoyuki Maki, Kotaro Mitsutake, Makoto AratonoAbstract:The interfacial tension γ of the hexane solution of Oleyl Alcohol against water was measured as a function of temperature T and molality m1 under atmospheric pressure. The entropy change associated with the adsorption Δs was dependent on both temperature and molality below about 35 mmol kg-1 while independent of both those above about 35 mmol kg-1. The former is responsible for the contact of the double bond of Oleyl Alcohol with water at the hexane/water interface, but the latter is responsible for the similarity of the aggregates, which are formed by the Alcohol molecules in their hexane solution, to the adsorbed films in the situation that hydrogen bonds are formed between the Alcohol molecules. Considering the aggregate formation and the thermodynamic equation used, it was found that the decrease of the interfacial density Γ1H at a high concentration region is an artifact introduced by the assumption of the ideal solution at that region. Furthermore, by drawing the interfacial pressure π versus the me...
Çiğdem Arısoy - One of the best experts on this subject based on the ideXlab platform.
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liquid phase equilibria of water propionic acid Oleyl Alcohol ternary system at several temperatures
Fluid Phase Equilibria, 2006Co-Authors: Mehmet Bilgin, Çiğdem ArısoyAbstract:Abstract (Liquid–liquid) equilibrium (LLE) data are investigated for mixtures of (water + propionic acid + Oleyl Alcohol) at 298.15, 308.15 and 318.15 K and atmospheric pressure. The solubility curves and the tie-line end compositions of liquid phases at equilibrium were determined, and the tie-line results were compared with the data predicted by the UNIFAC method. The phase diagrams for the ternary mixtures including both the experimental and correlated tie-lines are presented. The distribution coefficients and the selectivity factors for the immiscibility region are calculated to evaluate the effect of temperature change. The reliability of the experimental tie-lines was confirmed by using Othmer–Tobias correlation. It is concluded that Oleyl Alcohol may serve as an adequate solvent to extract propionic acid from its dilute aqueous solutions. The UNIFAC model correlates the LLE data for 298.15, 308.15 and 318.15 K with a root mean square deviation of 5.89, 6.46, and 6.69%, respectively, between the observed and calculated mole concentrations.
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Liquid phase equilibria of (water + propionic acid + Oleyl Alcohol) ternary system at several temperatures
Fluid Phase Equilibria, 2006Co-Authors: Mehmet Bilgin, Çiğdem ArısoyAbstract:Abstract (Liquid–liquid) equilibrium (LLE) data are investigated for mixtures of (water + propionic acid + Oleyl Alcohol) at 298.15, 308.15 and 318.15 K and atmospheric pressure. The solubility curves and the tie-line end compositions of liquid phases at equilibrium were determined, and the tie-line results were compared with the data predicted by the UNIFAC method. The phase diagrams for the ternary mixtures including both the experimental and correlated tie-lines are presented. The distribution coefficients and the selectivity factors for the immiscibility region are calculated to evaluate the effect of temperature change. The reliability of the experimental tie-lines was confirmed by using Othmer–Tobias correlation. It is concluded that Oleyl Alcohol may serve as an adequate solvent to extract propionic acid from its dilute aqueous solutions. The UNIFAC model correlates the LLE data for 298.15, 308.15 and 318.15 K with a root mean square deviation of 5.89, 6.46, and 6.69%, respectively, between the observed and calculated mole concentrations.
