Excess molar enthalpies for the binary and ternary mixtures of cyclohexane, tetrahydropyran, and 1,4dioxane have been measured using a Calvet microcalorimeter at 308.15 K and atmospheric pressure. The experimental binary results are correlated using the Redlich-Kister equation. The excess molar enthalpies for the ternary system are correlated using the Cibulka equation. The capability of the artificial neural network algorithm to model these data is finally studied.

International audienceExcess molar enthalpies for the binary and ternary mixtures of cyclohexane, tetrahydropyran, and piperidine have been measured using a Calvet microcalorimeter at 308.15 K and atmospheric pressure. All of the binary and ternary systems show endothermic behavior. The experimental binary results are correlated using the Redlich−Kister equation. The excess molar enthalpies for the ternary mixture are correlated using the Cibulka equation. The capability of an artificial neural network algorithm to model these data is finally studied

Experimental results are given in Tables S1 and S2. This information is available free of charge via the Internet at http://pubs.acs.org/.International audienceHydrofluoroalkenes, like hexafluoropropylene, can be considered as new working fluids for refrigeration systems and consequently volumetric and critical property data are required. In this study, a vibrating tube densitometer technique was used to determine densities at nine different temperatures between (263 and 358) K, and pressures between (0.04 and 15) MPa. The experimental uncertainties are (0.0003 and (0.0006 MPa for pressure, ( 0.02 K for temperature, ( 0.5% (relative) for vapor densities, and (0.05% for liquid densities. A different equipment based on static method is used for the determination of pure component vapor pressures for temperatures between (231 and 359) K. The experimental uncertainties are (0.0005 MPa for pressure and(0.02 K for the temperature. Critical properties have been determined by direct measurement and also from utilization of experimental densities considering the asymptotic scaling law behavior. The Patel Teja and crossover Patel Teja equations of state are used to correlate the data

International audienceExcess molar enthalpies for the binary and ternary systems of (cyclohexane, tetrahydropyran, and morpholine) or (cyclohexane, 1,4-dioxane, and morpholine) have been measured using a Calvet microcalorimeter at 308.15 K and atmospheric pressure. The experimental binary results are correlated using the Redlich-Kister equation. The excess molar enthalpies for the ternary systems are correlated using the Cibulka equation. The capability of an artificial neural network algorithm to model these data is finally studied

This article is part of the John M. Prausnitz Festschrift special issue.International audienceDensities of binary liquid mixtures of 1,2-dichloroethane (1,2-DCE) with ethylene glycol dimethyl ether (EGDME), diethylene glycol dimethyl ether (DEGDME), and diethylene glycol diethyl ether (DEGDEE) were measured at temperatures from (283.15 to 333.15) K and at atmospheric pressure, over the whole composition range, with an Anton Paar vibrating-tube densimeter. Excess molar volumes, VE, were deduced from experimental densities and were fitted to the Redlich−Kister polynomial equation. The VE values, for all these mixtures, are negative over the entire composition and temperature ranges. Values of VE magnitude for mixtures of 1,2-DCE with EGDME or DEGDME are close and increase slightly as the temperature increases, whereas those for 1,2-DCE + DEGDEE decrease and are more important. Others volumetric properties such as thermal expansion coefficients, excess thermal expansion, partial molar volumes, apparent molar volumes, and partial molar excess volumes were also calculated. Composition and temperature dependences of VE/x1x2 were explored. The capability of the Prigogine−Flory−Patterson theory (PFP) to model the VE data, at T = 298.15 K, for the binary mixtures studied, was finally tested