Articolele autorului Dr. Mariana Teodorescu
Link la profilul stiintific al lui Dr. Mariana Teodorescu

Isothermal vapor-liquid equilibrium data for the binary cyclooctane + propylbenzene mixture at temperatures from 363.15 to 393.15 K

Isothermal vapor-liquid equilibrium data are reported at 363.15, 373.15, 383.15, and 393.15 K for binary cyclooctane + propylbenzene mixtures. The data were correlated using the Redlich-Kister equation taking into account the vapor phase imperfection in terms of the 2nd virial coefficients. The calculated equimolar excess Gibbs energy is of the order of 170 J mol-1 at 363.15 K and decreases with increasing temperature.

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Vapour-liquid equilibria in cyclooctane-toluene binary mixtures

The experimental data of P, T, x, y isothermal vapour-liquid equilibrium at 333.15, 343.15, and 363.15 K in cyclooctane - toluene mixture are presented. Use has been made of an ebulliometer which allowed sampling from both phases in equilibrium. The experimental data were processed for evaluation of thermodynamic consistency. The results have evidenced a slightly positive deviation from ideality of the system.

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Evaluation of the carbonyl / chlorine interaction parameters in the pentan-3-one + chloroalkane mixtures using the DISQUAC group contribution model

Thermodynamic behaviour of the eight systems containing pentan-3-one and a chloroalkane, namely 1-chlorobutane, 1,2-dichloroethane, 1,3-dichloropropane, 1,4-dichlorobutane, trichloromethane, 1,1,1-trichloroethane, tetrachloromethane and 1,1,2,2-tetrachloroethane was interpreted in terms of the DISQUAC group contribution model. It was found that quasichemical term for the contact C=O/Cl in the pentan-3-one - (alpha, omega)-dichloroalkane and pentan-3-one

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Application of the predictive UNIFAC model to the pentan-3-one / chloroalkane and 5-chloro-2-pentanone / hydrocarbon binary systems

The predictive capability of the UNIFAC model by Fredenslund et al. (1977) using the last revised parameters of Hansen et al. 1991) was tested to describe the behavior of the binary systems of pentan-3-one + chloroalkane and 5-chloro-2-pentanone + hydrocarbon in the range of 313.15 -373.15 K at low or moderate pressures. The chloroalkanes under study were 1,2-dichloroethane, 1,3-dichloropropane, 1,4-dichlorobutane, trichloromethane, 1,1,1-trichloroethane,

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Isothermal vapour-liquid equilibria and densities for the 5-chloropentan-2-one + n-hexane, + toluene, + ethylbenzene binary mixtures

Isothermal vapour–liquid equilibrium (VLE) data are reported for binary mixtures containing 5-chloropentan-2-one with n-hexane (from 323.15 to 353.15 K), and toluene or ethylbenzene (from 343.15 to 373.15 K). The data are complemented by excess molar volumes (VE) obtained from density measurements at 298.15 K over the whole composition range. The VLE and VE experimental data are correlated by means of the Redlich–Kister equation using the maximum

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Isothermal vapour-liquid equilibria for pentan-3-one + 1,4-dichlorobutane, + trichloromethane, + 1,1,1-trichloroethane, + 1,1,2,2-tetrachloroethane binary mixtures

Isothermal vapour–liquid equilibrium data are reported for binary mixtures containing pentan-3-one with 1,4-dichlorobutane from 343.15 to 373.15 K, trichloromethane from 313.15 to 343.15 K, 1,1,1-trichloroethane from 323.15 to 353.15 K, and 1,1,2,2-tetrachloroethane from 343.15 to 373.15 K. A modified equilibrium still is described. The experimental data were correlated using the Redlich–Kister, Wilson and NRTL models by means of the maximum

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Vapour pressures and excess Gibbs energy of ethylbenzene – cyclooctane binary mixtures

Isothermal vapour-liquid equilibrium data at 343.15, 353.15 and 373.15 K for ethylbenzene + cyclooctane mixtures are reported. Use has been made of an ebullioneter which allowed sampling from both phases in equilibrium. Different GE expressions suitable for correlation of these data were tested. The results evidenced a positive deviation from ideality of the system.

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Densities and excess volumes of pentan-3-one + 1,2-dichloroethane, +1,3-dichloropropane, + 1,4-dichlorobutane, + trichloromethane, + 1,1,1-trichloroethane, + 1,1,2,2-tetrachloroethane binary mixtures at 298.15 K

Densities and excess molar volumes, VE, of pentan-3-one + 1,2-dichloroethane, + 1,3-dichloropropane, + 1,4-dichlorobutane, + trichloromethane, + 1,1,1-trichloroethane, + 1,1,2,2-tetrachloroethane are presented at 298.15 K and atmospheric pressure over the whole composition range. These measurements were performed in order to complement the data on VLE [M. Teodorescu, A. Barhala, O. Landauer, ELDATA: Int. Electron. J. Physico-Chem. Data 3 (1997) 101-108;

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Isothermal vapor-liquid equilibrium in the quaternary water + isopropanol + acetic acid + isopropyl acetate system with chemical reaction

Vapor-liquid equilibrium accompanied with chemical reaction in the quaternary water + 2-propanol + acetic acid + isopropyl acetate system was measured in a modified Dvorak and Boublik still. In total, 63 experimental points at 353.15 K and 16 points at 101.325 kPa were determined. The experimental data were correlated by means of the maximum likelihood procedure by using the NRTL model. Binary model parameters for the four nonreacting binary subsystems

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