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Lei F.,Hunan University | Wang Q.,Hunan University | Gong X.,Hunan University | Shen B.,Zhejiang Shuyang Chemical Co. | And 2 more authors.
Journal of Chemical and Engineering Data | Year: 2013

Liquid-liquid equilibrium (LLE) data for the ternary system water + cyclohexane + acetic acid have been measured at (303.2 to 333.2) K under atmospheric pressure. The Othmer-Tobias and Bachman equations were used to check the reliability of the obtained tie-line data. The experimental data were correlated by NRTL (nonrandom two-liquid) activity coefficient model, and the relevant interaction parameters were regressed with the experimental data. The predicted values by NRTL method show good consistency with the measured data. The obtained interaction parameters can be used in the calculation of LLE for the ternary system water + cyclohexane + acetic acid as well as for the design and optimization of the related separation process. © 2013 American Chemical Society.


Shen B.,Hunan University | Wang Q.,Hunan University | Wang Y.,Jingchu University of Technology | Ye X.,Zhejiang Shuyang Chemical Co. | And 2 more authors.
Journal of Chemical and Engineering Data | Year: 2013

The solubilities of adipic acid in acetic acid + water mixtures at (303.2 to 333.2) K and acetic acid + cyclohexane mixtures at (303.2 to 343.2) K are measured. The measured solubility of adipic acid in acetic acid + cyclohexane mixtures with the mass fraction of acetic acid in the solvent mixtures at (0.1 to 1.0) decreases with increasing mass fraction of cyclohexane at constant temperature. However, for the solubility of adipic acid in acetic acid + water with the mass fraction of acetic acid in the solvent mixtures at (0 to 1.0), acetic acid with a mass fraction of 50 % has the best dissolving capacity for adipic acid at constant temperature. The experimental data was correlated by the nonrandom two-liquid (NRTL) activity coefficient model, and the values of the solubilities calculated using the model showed good agreement with the experimental observations. © 2013 American Chemical Society.


Wang H.,Hunan University | Wang Q.,Hunan University | Chen C.,Zhejiang Shuyang Chemical Co. | Xiong Z.,Zhejiang Shuyang Chemical Co.
Journal of Chemical and Engineering Data | Year: 2014

Liquid-liquid equilibrium (LLE) data for the ternary system water + benzyl alcohol + benzaldehyde were measured at (303.2 to 343.2) K under atmospheric pressure. The reliability of the experimental LLE data were checked by the Othmer-Tobias and the Hand correlations. The experimental data were correlated by both the (nonrandom two liquid) NRTL and the universal quasichemical activity coefficient (UNIQUAC) models. The relative-mean-standard deviations obtained are 0.16 % by the NRTL model and 0.14 % by the UNIQUAC model. The relevant model interaction parameters were regressed with the experimental data. The distribution coefficients and separation factors were used to discuss the ability of the solvent water to extract benzyl alcohol from binary benzyl alcohol + benzaldehyde solvent mixtures. The results show that the separation factor of benzyl alcohol increased with an increase of the mass of water and decreased with an increase of temperature, which indicates that the extraction separation of benzyl alcohol from binary benzyl alcohol + benzaldehyde mixtures by the extract agent water may be feasible. The obtained results might be used in the separation process for the ternary system water + benzyl alcohol + benzaldehyde. © 2014 American Chemical Society.


Lei F.,Hunan University | Wang Q.,Hunan University | Gong X.,Hunan University | Shen B.,Zhejiang Shuyang Chemical Co. | And 2 more authors.
Journal of Chemical and Engineering Data | Year: 2014

The solubilities of succinic acid in acetic acid + water solvent mixtures at (303.2 to 333.2) K and acetic acid + cyclohexane solvent mixtures at (303.2 to 343.2) K were determined. It was found that the solubility of succinic acid in acetic acid + cyclohexane mixtures increases with increasing mass fraction of acetic acid at constant temperature. However, for the system of acetic acid + water solvent mixtures, acetic acid with the mass fraction of 0.20 shows the best dissolving capacity for succinic acid. The experimental data were well-correlated with universal quasi-chemical (UNIQUAC) equations, and the solubilities calculated by the model were in good agreement with experimental data. © 2014 American Chemical Society.


Li C.,Hunan University | Wang Q.,Hunan University | Shen B.,Zhejiang Shuyang Chemical Co. | Xiong Z.,Zhejiang Shuyang Chemical Co. | Chen C.,Zhejiang Shuyang Chemical Co.
Journal of Chemical and Engineering Data | Year: 2014

The solubilites of 5,10,15,20-tetrakis( p-chlorophenyl)porphyrin (abbreviated in p-ClTPP) in binary propionic acid-rich propionic acid + water solvent mixtures from (293.2 to 353.2) K were measured. The effects of mass fraction of propionic acid from (0.80 to 1.00) in propionic acid + water mixtures on the solubility were studied. The results show that the solubilites decrease with the decreasing mass fraction of propionic acid at constant temperature, and increase with the increase of temperature at constant solvent composition. The Apelblat equation was used to correlate the experimental data, and the solubilities calculated by the equation were in good agreement with experimental observations. In addition, the thermodynamic parameters for the solution of 5,10,15,20-tetrakis(p-chlorophenyl)porphyrin in propionic acid + water mixtures including dissolution enthalpy, entropy, isobaric heat capacity, and Gibbs energy were calculated by the Clark and Glew equation. (Graph Presented). © 2014 American Chemical Society.


Wang H.,Hunan University | Wang Q.,Hunan University | Xiong Z.,Zhejiang Shuyang Chemical Co. | Chen C.,Zhejiang Shuyang Chemical Co.
Journal of Chemical and Engineering Data | Year: 2014

Liquid-liquid equilibrium (LLE) data for the ternary system water + benzyl alcohol + methylbenzene were measured at (303.2 to 343.2) K under atmospheric pressure. The Othmer-Tobias and the Hand correlations were used to check the reliability of the experimental LLE data. The distribution coefficient and separation factor were used to investigate the ability of water to extract benzyl alcohol from methylbenzene. The results show that the distribution coefficient of benzyl alcohol increases with the increasing mass fraction of water in the aqueous phase. The experimental data were correlated by both the nonrandom two-liquid (NRTL) and the universal quasichemical (UNIQUAC) activity coefficient models. The relevant model interaction parameters were regressed by data fitting. The model calculated results show good agreement with the measured data. The obtained interaction parameters can be used in the calculation of LLE for the ternary system water + benzyl alcohol + methylbenzene as well as for the design and optimization of the related separation process. © 2014 American Chemical Society.


Gong X.,Hunan University | Wang Q.,Hunan University | Lei F.,Hunan University | Shen B.,Zhejiang Shuyang Chemical Co.
Journal of Chemical and Engineering Data | Year: 2014

Liquid-liquid equilibrium (LLE) data of the ternary system water + cyclohexanol + cyclohexanone was measured from (303.2 to 333.2) K. The reliability of the experimental tie-line data was confirmed by applying the Othmer-Tobias and the Bachman equations. The equilibrium data were correlated with the nonrandom two-liquid (NRTL) and universal quasichemical activity coefficient (UNIQUAC) models. The calculated LLE data for the ternary system agreed well with the experimental data. The root-mean-square deviations (rmsd's) obtained comparing calculated and experimental two-phase compositions are 0.46 % for the NRTL model and 0.44 % for the UNIQUAC model. The obtained interaction parameters can be used in the calculation of LLE for the ternary system water + cyclohexanol + cyclohexanone as well as for the design, simulation, and optimization of the related separation process. © 2014 American Chemical Society.


Wang H.,Hunan University | Wang Q.,Hunan University | Xiong Z.,Zhejiang Shuyang Chemical Co. | Chen C.,Zhejiang Shuyang Chemical Co. | Shen B.,Zhejiang Shuyang Chemical Co.
Journal of Chemical Thermodynamics | Year: 2015

The solubility of benzoic acid in binary (benzyl alcohol + benzaldehyde) solvent mixtures was measured at temperature from (298.35 to 355.65) K and atmospheric pressure. The measured solubility increases with the increasing temperature at constant solvent composition. The effects of mass fraction benzaldehyde in the solvent mixtures at (0.0 to 1.00) on the solubility were studied. The measured solubility decreases with the increasing mass fraction of benzaldehyde. The experimental results were correlated with the non-random two-liquid (NRTL) equations, and good agreement between the correlated and the experimental values was obtained. Thermodynamic functions for the solution of benzoic acid in binary (benzyl alcohol + benzaldehyde) solvent mixtures were calculated with the van't Hoff plot. The apparent dissolution Gibbs free energy change was also calculated. © 2014 Elsevier Ltd. All rights reserved.


Li C.,Hunan University | Wang Q.,Hunan University | Shen B.,Zhejiang Shuyang Chemical Co. | Xiong Z.,Zhejiang Shuyang Chemical Co. | Chen C.,Zhejiang Shuyang Chemical Co.
Fluid Phase Equilibria | Year: 2015

The solubilities of 5,10,15,20-tetrakis(4-chlorophenyl) porphyrin (abbreviated in p-ClTPP) in ethanol. + water solvent mixtures at (293.2-333.2). K and 5,10,15,20-tetrakis(4-chlorophenyl) porphyrin manganese(III) chloride (abbreviated in p-ClTPPMnCl) in ethanol. + water solvent mixtures at (303.2-333.2) K were measured. The concentration of ethanol in term of mole fraction on the solubility was studied. It was found that the solubility of p-ClTPP in ethanol. +. water solvent mixtures increases with the increasing of temperature at constant solvent composition, and decreases with the decreasing mole fraction of ethanol at constant temperature. However, for p-ClTPPMnCl, the solubility increases with the increasing of temperature at the mole fraction of ethanol from (0.6102-0.8597), and decreases with the increasing of temperature at the mole fraction of ethanol from (0.9038-1.0000). The experimental data were correlated with the modified Apelblat equation, and the solubilities correlated by the model were in good agreement with experimental data. Thermodynamic parameters including dissolution enthalpy, dissolution entropy and dissolution Gibbs free energy were calculated with van't Hoff equation. © 2015.


Wang H.,Hunan University | Wang Q.,Hunan University | Xiong Z.,Zhejiang Shuyang Chemical Co. | Chen C.,Zhejiang Shuyang Chemical Co.
Fluid Phase Equilibria | Year: 2014

Liquid-liquid equilibrium (LLE) data for the ternary system of water + benzaldehyde + toluene have been determined at (303.2-343.2) K under atmospheric pressure. The Othmer-Tobias and the Hand correlations were used to check the reliability of the experimental data. The obtained LLE data were correlated by both the NRTL and UNIQUAC activity coefficient models. The relevant interaction parameters were extracted by the regression of the experimental data. The calculated values by these two models show good consistency with the measured data. The relative-mean-standard deviations obtained is 0.82% by the NRTL model and 0.12% by the UNIQUAC model. The obtained interaction parameters might be used in the calculation of LLE for the ternary system water + benzaldehyde + toluene as well as for the design and optimization of the related separation process. © 2014 Elsevier B.V.

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