Paweł Oracz

Vapour-liquid equilibria. I. An apparatus for isothermal total vapour pressure measurements: Binary mixtures of ethanol and t-butanol with n-hexane, n-heptane and n-octane at 313.15 K

A static apparatus for the determination of total vapour pressure isotherms of mixtures is described. The apparatus works without a null manometer, and degassing of samples is done without freezing. VLE data for six binary mixtures of ethanol and t-butanol with n-hexane, n-heptane and n-octane are reported and compared with literature data. References to other VLE data obtained using this apparatus are also given.

Vapour-liquid equilibria—III. Total vapour pressure measurements for binary mixtures of methanol, ethanol, 1-propanol and 1-butanol with benzene, toluene and p-xylene at 313.15 K

Abstract Total vapour pressure measurements made at 313.15 K by the modified static method for 12 binary mixtures of methanol, ethanol, 1-propanol and 1-butanol with benzene, toluene and p-xylene are presented and compared with literature data. The alcohol high dilution region of these systems is thoroughly studied. The different expressions for GE suitable for correlation of these measurements are tested. The internal consistency of data for various systems is also studied.

Total vapour pressure measurements and excess Gibbs energies for the binary systems methanol + ethanol, ethanol + 2-propanol, benzene + cyclohexane, benzene + carbon tetrachloride and benzene + ethanol at 303.15 and 313.15 K

Abstract A static apparatus for the determination of total vapour pressure isotherms of mixtures has been tested. VLE data for the binary systems methanol + ethanol, ethanol + 2-propanol, benzene + cyclohexane, benzene + carbon tetrachloride and benzene + ethanol at 303.15 and 313.15 K are reported and compared with literature data. The different expressions for GE suitable for correlation of these data are tested. Accuracy of prediction of HE from two (P, x isotherms is also studied.

Vapour-liquid equilibria. II. The ternary system methanol-chloroform-acetone at 313.15 and 323.15 K

Abstract Total vapour pressure measurements made by the modified static method for the ternary systems methanol-chloroform-acetone and constituent binaries at 313.15 and 323.15 K are presented. The different expressions of GE suitable for correlation of these data are tested. A prediction of ternary VLE from binary data is examined. The possibility of predicting the binary and ternary VLE at one temperature using VLE data at another temperature and HE data is investigated. Accuracy of prediction of HE from two (P, x) isotherms is also studied. Our results are compared with literature data.

Vapour-liquid equilibria. VII: The ternary system hexanemethanolacetone at 313.15 K

Abstract Total vapour pressure measurements made by the modified static method for the ternary system hexanemethanolacetone and constituent binary system hexanemethanol at 313.15 K are presented. The alcohol high dilution region of the methanolhexane system is thoroughly studied. The different expressions for G E suitable for correlation of these data are tested; the systems hexaneacetone and methanolacetone, published previously, have been also rediscussed from the point of view of the present ternary system. The prediction of ternary VLE from constituent binaries is studied. Our results are compared with literature data.

Vapour-liquid equilibria. X. The ternary system cyclohexane-methanol-acetone at 293.15 and 303.15 K

Total vapour pressure measurements made by the modified static method for the ternary system cyclohexanemethanolacetone and all the constituent binary systems at 293.15 and 303.15 K are presented. The alcohol high-dilution region of the cyclohexanemethanol system has been thoroughly studied. Different exprerssions for GE suitable for correlation of these data are tested. The prediction of ternary VLE from the constituent binaries is studied. The accuracy of the prediction of HE from two (P, x) isotherms is studied for the binary systems. The possibility of predicting the ternary HE from VLE isotherms is also. Our results are compared with literature data.

Vapour-liquid equilibria. VIII. The ternary system cyclohexane-methanol-acetone at 313.15 K

Abstract Total vapour pressure measurements made by the modified static method for the ternary system cyclohexane–methanol–hexane at 303.15 K are presented. Different expressions for GE suitable for correlation of these data as well as the equation of state incorporating association term are tested; the constituent binary system cyclohexane–methanol, published previously, was also discussed from the point of view of the present measurements for the ternary system. The prediction of ternary VLE from constituent binaries is studied.

Vapour-liquid equilibria: VI. The ternary system acetone - hexane - cyclohexane at 313.15 K

Goral M., Oracz P. and Warycha S., 1992. Vapour-liquid equilibria. VI. The ternary system acetone-hexane-cyclohexane at 313.15 K. Fluid Phase Equilibria, 81: 261-272. Total vapour pressure measurements made by the modified static method for the ternary system acetone-hexane-cyclohexane and two constituent binaries (acetone-cyclohexane and hexane-cyclohexane) at 313.15 K are presented. The different expressions for GE suitable for the correlation, of these data are tested; the system acetone-hexane, published previously, is also discussed again from the point of view of the present ternary system. The prediction of ternary vapour-liquid equilibria from constituent binaries is studied. Our results are compared with literature data.

Vapour—liquid equilibria. V. The ternary system carbon tetrachloride—methanol—chloroform at 303.15 K

Abstract Total vapour pressure measurements made by the modified static method for the ternary system carbon tetrachloride—methanol—chloroform and constituent binaries at 303.15 K are presented. The different expressions for GE suitable for correlation of these data are tested. The prediction of ternary VLE from constituent binaries is studied. The prediction of HE from two (P, x) isotherms is also investigated. Our results are compared with literature data.

Vapour—liquid equilibrium in the ternary system N,N-dimethylformamide + methanol + water at 313.15 K

Abstract Total vapour pressure measurements made by the modified static method for the ternary system N,N-dimethylformamide—methanol—water and constituent binaries at 313.15 K are presented. The different expressions for GE suitable for correlation of these data are tested. A prediction of ternary VLE from binary data is examined. Results for the methanol—water binary system are compared with literature data.