José Carlos Cobos

• BSc, MSc and PhD on Physics at the University of Valladolid (Spain)
• Professor (Full) at University of Valladolid

Excess molar enthalpies, $H_{\text{m}}^{\text{E}}$, have been measured using a Tian-Calvet microcalorimeter for the systems CH$_3$(CH$_2$)$_{u-1}$OH ($u$ = 1,2,3,4,7,10) + cyclohexylamine at 298.15 K and 0.1 MPa. The $H_{\text{m}}^{\text{E}}$ values are large and negative, indicating the existence of strong interactions between unlike molecules, wh...

Excess molar enthalpies, $H_{\text{m}}^{\text{E}}$, at 298.15 K and 0.1 MPa have been measured by means of a Tian-Calvet microcalorimeter for the systems benzylamine (phenylmethanamine) + heptane, or + methanol, or + 1-propanol, or + 1-pentanol, or + 1-heptanol, or + 1-decanol. In addition, excess molar volumes, $V_{\text{m}}^{\text{E}}$, at the sa...

A differential scanning calorimetric technique has been used to obtain solid-liquid equilibrium temperatures for the mixtures naphthalene or biphenyl + 1-tetradecanol, or + 1-hexadecanol. All the systems show a simple eutectic point, whose final composition was determined by means of the Tamman's plots using the needed values of the eutectic heat a...

Systems of the type linear primary or secondary amine + cyclohexane, or + polar compound (namely, linear or cyclic monoether, + 1,4-dioxane, + N,N-dialkylamide, or + ethanitrile) have been investigated using literature data, and by means of DISQUAC. Interaction parameters for the contacts amine/ether, amine/amide and amine/nitrile are provided. For...

Excess molar enthalpies, $H_{\text{m}}^{\text{E}}$, over the whole composition range have been determined for the liquid mixtures N,N-dimethylformamide (DMF) or N,N-dimethylacetamide (DMA) + butan-1-amine (BA), or + hexan-1-amine (HxA), or + N-propylpropan-1-amine (DPA), or N-butylbutan-1-amine (DBA) at 298.15 K and at 0.1 MPa using a BT2.15 calori...

Densities and speeds of sound at a temperature $T$ = 298.15 K, relative permittivities at 1 MHz and refractive indices at the sodium D-line at $T$ = (293.15 K to 303.15 K), all at a pressure p = 0.1 MPa, are reported for liquid mixtures methanol, propan-1-ol or pentan-1-ol + aniline. Excess molar volume ($V_{\text{m}}^{\text{E}}$), excess isentropi...

Mixtures formed by 1-alkanol and one strongly polar compound (nitromethane (NM), ethanenitrile (EtN), dimethyl sulfoxide (DMSO), sulfolane (SULF), nitrobenzene (NTBz) or benzonitrile (BzCN)) have been investigated on the basis of a set of thermophysical data, which includes: excess molar functions (enthalpies, $H_{\text{m}}^{\text{E}}$, Gibbs energ...

Densities, $\rho$, and kinematic viscosities, $\nu$, have been determined at atmospheric pressure and at (293.15-303.15) K for binary mixtures formed by methanol and one linear polyether of the type CH$_3$-O-(CH$_2$CH$_2$O)$_n$-CH$_3$ ($n$ = 2,3,4). The $\rho$ values are used to compute excess molar volumes, $V_{\text{m}}^{\text{E}}$, and, together...

The systems C$_6$H$_5$Cl, or C$_6$H$_5$Br, or 1-chloronaphthalene, or 1,2,4-trichlorobenzene, or 1-methylnaphthalene, or 1,2,4-trimethylbenzene + alkane have been investigated by means of the their excess molar properties, including, when the needed data are available, those at constant volume, internal energies ($U_{V\text{m}}^{\text{E}}$) and hea...

Fluorobenzene, or 1,4-difluorobenzene or hexafluorobenzene + alkane mixtures and hexafluorobenzene + benzene, or + toluene, or + 1,4-dimethylbenzene systems have been studied using thermodynamic properties from the literature and through the application of the DISQUAC and UNIFAC (Dortmund) models and the concentration-concentration structure factor...

The CH$_3$(CH$_2$)$_u$COO(CH$_3$)$_v$CH$_3$ + n-alkane mixtures have been investigated on the basis of an experimental database containing effective dipole moments of esters, and excess molar functions of the systems: enthalpies ($H_{\text{m}}^{\text{E}}$), volumes ($V_{\text{m}}^{\text{E}}$), isobaric heat capacities ($C_{p\text{m}}^{\text{E}}$) a...

Kinematic viscosities were measured for iodobenzene + n-alkane mixtures at (288.15-308.15) K and atmospheric pressure. Using our previous density data, dynamic viscosities ($\eta$), deviations in absolute viscosity ($\Delta \eta$) and quantities of viscous flow were determined. The McAllister, Grunberg-Nissan and Fang-He correlation equations and B...

(Iodobenzene + n-alkane) liquid mixtures have been studied experimentally, in terms of densities and speeds of sound at a pressure $p$ = 0.1 MPa and in the temperature range $T$ = (288.15 to 308.15) K, and theoretically, by the application of the Prigogine-Flory-Patterson (PFP) model. The n-alkanes considered are n-heptane, n-decane, n-dodecane, an...

Liquid-liquid equilibrium (LLE) phase diagrams have been determined, by means of the critical opalescence method with a laser scattering technique, for the mixtures 4-phenylbutan-2-one + CH$_3$(CH$_2$)$_n$CH$_3$ ($n = 10,12,14$) and for benzyl ethanoate + CH$_3$(CH$_2$)$_n$CH$_3$ ($n = 12,14$). The systems are characterized by having an upper criti...

Kinematic viscosities were measured for iodobenzene + n-alkane mixtures at (288.15–308.15) K and atmospheric pressure. The corresponding dynamic viscosities were also determined using density data previously obtained in our laboratory. This set of data was employed to calculate deviations in absolute viscosity and magnitudes of viscous flow. In add...

The CH3(CH2)uCOO(CH2)vCH3 + n-alkane mixtures have been investigated on the basis of an experimental database containing effective dipole moments of esters, and excess molar functions of the systems: enthalpies, volumes, isobaric heat capacities and isochoric internal energies, and by means of the application of the Flory model and the Kirkwood-Buf...

(Iodobenzene + n-alkane) liquid mixtures have been studied experimentally, in terms of densities and speeds of sound, and theoretically, by the application of the Prigogine-Flory-Patterson (PFP) model. The n-alkanes considered are n-heptane, n-decane, n-dodecane, and n-tetradecane. Density and speed of sound measurements have been performed at a pr...

A differential scanning calorimetric technique has been used to obtain solid–liquid equilibrium temperatures for the mixtures naphthalene or biphenyl + 1-tetradecanol, or + 1-hexadecanol. All the systems show a simple eutectic point, whose final composition was determined by means of the Tamman’s plots using the needed values of the eutectic heat a...

Excess molar enthalpies,HmE, at 298.15 K and 0.1 MPa have been measured by means of a Tian-Calvet microcalorimeter for the systems benzylamine (phenylmethanamine) + heptane, or + methanol, or + 1-propanol, or + 1-pentanol, or + 1-heptanol, or + 1-decanol. In addition, excess molar volumes,VmE, at the same conditions have been also determined using...

The systems C6H5Cl, or C6H5Br, or 1-chloronaphthalene, or 1,2,4-trichlorobenzene, or 1-methylnaphthalene, or 1,2,4-trimethylbenzene + alkane have been investigated by means of the their excess molar properties, including, when the needed data are available, those at constant volume, internal energies (UVmE) and heat capacities (CVmE), and using the...

Fluorobenzene, or 1,4-difluorobenzene or hexafluorobenzene + alkane mixtures and hexafluorobenzene + benzene, or + toluene, or + 1,4-dimethylbenzene systems have been investigated using thermodynamic properties from the literature and through the application of the DISQUAC and UNIFAC (Dortmund) models and the concentration-concentration structure f...

Excess molar enthalpies,HmE, have been measured using a Tian-Calvet microcalorimeter for the systems CH3(CH2)u-1OH (u =1,2,3,4,7,10) + cyclohexylamine at 298.15 K and 0.1 MPa. The HmE values are large and negative, indicating the existence of strong interactions between unlike molecules, which is consistent with the also large and negative excess m...

Densities (ρ) and speeds of sound (c) at a temperature T = 298.15 K, relative permittivities at 1 MHz (εr) and refractive indices at the sodium D-line (nD) at T = (293.15 K to 303.15 K), all of them at a pressure p = 0.1 MPa, are reported for binary liquid mixtures alkan-1-ol + aniline. The alkan-1-ols considered are methanol, propan-1-ol and penta...

Systems of the type linear primary or secondary amine + cyclohexane, or + polar (namely, linear or cyclic monoether, + 1,4-dioxane, + N,N-dialkylamide, or + ethanitrile) have been investigated using literature data, and by means of DISQUAC. Interaction parameters for the contacts amine/ether, amine/amide and amine/nitrile are provided. For a given...

Densities, \(\rho\), and kinematic viscosities, \(\nu\), have been determined at atmospheric pressure and at 293.15–303.15 K for binary mixtures formed by methanol and one linear polyether of the type CH3–O–(CH2CH2O)n–CH3 (n = 2, 3, 4). Measurements on \(\rho\) and \(\nu\) were carried out, respectively, using an Anton Paar DMA 602 vibrating-tube d...

Excess molar enthalpies, HmE, over the whole composition range have been determined for the liquid mixtures N,N-dimethylformamide (DMF) or N,N-dimethylacetamide (DMA) + butan-1-amine (BA), or + hexan-1-amine (HxA), or + N-propylpropan-1-amine (DPA), or N-butylbutan-1-amine (DBA) at 298.15 K and at 0.1 MPa using a BT2.15 calorimeter from Setaram ada...

Mixtures formed by 1-alkanol and one strongly polar compound, nitromethane (NM), ethanenitrile (EtN), dimethyl sulfoxide (DMSO, sulfolane (SULF), nitrobenzene (NTBz) or benzonitrile (BzCN), have been investigated on the basis of a set of thermophysical data, which includes: excess molar functions, enthalpies, H mE , Gibbs energies, G mE , entropies...

Liquid-liquid equilibria (LLE) phase diagrams have been determined for the systems: 2-ethoxy-benzenamine + octane, or +decane, or +dodecane, or +tetradecane and for 4-ethoxy-benzenamine + heptane, or +octane. The experimental method used is based on the observation, by mean of a laser scattering technique, of the turbidity produced on cooling when...

General aim: Experimental analysis of thermophysical properties of mixtures containing alcohols and amines. Particular purposes: Report the excess molar volumes (V m E), excess isentropic compressibilities (κ S E) and refractive indices at the sodium D-line (n D) for binary mixtures 1-alkanol + benzylamine at (293.15-303.15) K and 0.1 MPa. The 1-al...

The liquid–liquid equilibrium (LLE) curves for 2-phenylethan-1-ol (2-phenylethanol, 2PhEtOH) + octane, + decane, + dodecane, + tetradecane or + 2,2,4-trimethylpentane have been determined by a method of turbidimetry using a laser scattering technique. Experimental results reveal that the systems are characterized by an upper critical solution tempe...

Dielectric and refractive study of 1-alkanol + triethylamine systems. Experimental results are reported and analysed according to thermodynamic relations. The Kirkwood-Fröhlich model is applied and and the Kirkwood correlation factors are calculated.

Dielectric and refractive study of 1-alkanol + hexan-1-amine systems.

LLE of mixtures containing phenyl acetonitrile and n-alkanes.

Interactions and structure of organic carbonate + alkane, and 1-alkanol + organic carbonate mixtures have been investigated by means of a set of molar excess functions, enthalpies ( ), volumes ( ), isobaric heat capacities, ( ) or entropies; and considering internal pressure ( ); liquid-liquid equilibria or permittivity data. In addition, the menti...

Investigation of orientational effects by means of experimental data, the Flory model and the concentration-concentration structure factor formalism.

Dielectric investigation on several N,N-dimethylformamide + linear amine systems.

Relative permittivities at 1 MHz, εr, and at (293.15–303.15) K, are reported for the binary systems N,N-dimethylformamide (DMF) + N-propylpropan-1-amine (DPA), + N-butylbutan-1-amine (DBA), + butan-1-amine (BA) or + hexan-1-amine (HxA). The values of the excess relative permittivities, εrE, have also been determined for these solutions. The measure...

Liquid–liquid equilibrium (LLE) phase diagrams have been determined, by means of the critical opalescence method with a laser scattering technique, for the mixtures 4-phenylbutan-2-one + CH3(CH2)nCH3 (n = 10,12,14) and for benzyl ethanoate + CH3(CH2)nCH3 (n = 12,14). The systems are characterized by having an upper critical solution temperature (UC...

Liquid-liquid equilibrium (LLE) temperatures have been determined for the mixtures: phenyl acetone + CH3(CH2)uCH3 (u = 8,10,12,14), or + 2,2,4-trimethylpentane, benzyl acetone + decane and benzyl acetate + dodecane by means of the critical opalescence method using a laser scattering technique. All the systems are characterized by an upper critical...

Densities, kinematic viscosities, refractive indices and dielectric permittivities have been measured at atmospheric pressure over the whole concentration range for the methanol + cyclohexylamine mixture at (293.15–303.15) K and 0.1 MPa. Dynamic viscosities, , were obtained from densities and kinematic viscosities. This set of experimental values h...

Molar isobaric heat capacities, , and molar excess isobaric heat capacities, , are reported for 1-butanol, 1-octanol or 1-decanol + benzylamine systems at (293.15, 308.15, 318.15, 333.15) K. values were measured with a Setaram Micro DSC II microcalorimeter using a scanning method. The investigated mixtures are characterized by large and positive va...

Relative permittivities, εr, at 1 MHz have been measured for (1-alkanol + cyclohexylamine) systems at T = (293.15 to 303.15) K and atmospheric pressure. The excess permittivity values, εrE, Kirkwood's correlation factors, gK, and the excess values of this magnitude, gKE, have been also determined for these solutions and, using measurements availabl...

Aunque las aplicaciones más importantes del estudio del equilibrio sólido-líquido están en el campo de la metalurgia y la mineralogía, la información que puede aportar este estudio resulta también de gran aplicabilidad en el área de la fabricación de alimentos y productos farmacéuticos, cosmética y el almacenamiento energético con los materiales de...

La fenilacetona es un precursor de la anfetamina y metanfetamina, potentes estimulantes del sistema nervioso central y utilizadas como drogas de “diseño”. Además, la fenilacetona es el producto de la desaminación de la anfetamina en el cuerpo humano. Por otra parte, el estudio de mezclas que contienen un compuesto aromático con un grupo funcional p...

Densities, ρ, and speeds of sound, u, of 2-heptanone + aniline + N-methylaniline or + pyridine systems have been measured at (293.15, 298.15 and 303.15) K and atmospheric pressure using a vibrating tube densimeter and sound analyzer. The ρ and u values were used to calculate excess molar volumes, V E, and the excess functions at 298.15 K for the sp...

Liquid-liquid equilibrium (LLE) temperatures have been determined for acetophenone + CH3(CH2)uCH3 (u = 8,10,12,14) mixtures by means of the opalescence method using a laser scattering technique. All the solutions show an upper critical solution temperature (UCST), which increases almost linearly with u. Acetophenone + benzene, or +alkane, or +1-alk...

Densities, , kinetic viscosities, , and refractive indices, , have been measured for (1-heptanol or 1-decanol + cyclohexylamine) systems at T = (293.15 to 303.15) K. The experimental , , values were obtained using an Anton Paar DMA 602 vibrating-tube densimeter, an Ubbelohde viscosimeter and a refractometer model RMF970, respectively. These data ar...

Molar excess heat capacities, C-pm(E). are reported for the benzylamine + heptane mixture at 293.15K and for methanol, 1-propanol or 1-pentanol + benzylamine systems at 293.15-308.15 K. These values were determined from isobaric molar heat capacities obtained with a Setaram Micro DSC II microcalorimeter using a scanning method. The heptane solution...

Coexistence curves for the liquid–liquid equilibria (LLE) of 1-phenylmethanamine (benzylamine) + CH3(CH2)nCH3 (n = 8, 9, 10, 12, 14) have been determined using the critical opalescence method by means of a laser scattering technique. All of the LLE curves show an upper critical solution temperature (UCST), which increases with increasing n. For sys...

Molar excess enthalpies, HmE, measured by means of a Tian-Calvet microcalorimeter, for the ternary system {1-propanol + N,N,N-triethylamine (TEA) + 2-butanone} at T = 298.15 K are reported. Values of HmE for the constituent binaries are available in the literature. The data are interpreted in terms of different interactional contributions to HmE. T...

Primary or secondary cyclic amine + alkane mixtures have been investigated in the framework of the ERAS (Extended Real Associated Solution) model. The corresponding ERAS parameters are reported. All the amines considered have the same equilibrium constant (K-A = 0.75). Cyclopropylamine, cyclopentylamine, cyclohexylamine and pyrrolidine are characte...

Liquid?liquid equilibrium (LLE) temperatures versus composition for N,N-dimethylacetamide (DMA) + decane, + dodecane, + tetradecane, + 2,2,4-trimethylpentane, + methylcyclohexane, or + cyclooctane mixtures have been measured by means of the critical opalescence method using a laser scattering technique. All the systems show an upper critical soluti...

1-Alkanol + alkanone systems have been investigated through the data analysis of molar excess functions, enthalpies, isobaric heat capacities, volumes and entropies, and using the Flory model and the formalism of the concentration-concentration structure factor (SCC(0)). The enthalpy of the hydroxyl-carbonyl interactions has been evaluated. These i...

A vibrating tube densimeter and sound analyzer Anton Paar model DSA-5000 has been used for the measurement of densities, ρ, and speeds of sound, c, of N-methylphenylamine (N-methylaniline) + heptane, or + cyclohexane, or + toluene mixtures at (293.15 to 303.15) K and atmospheric pressure. From these data, we have obtained excess molar volumes, VmE,...

Excess molar enthalpies, H-m(E), at 298.15 K and atmospheric pressure, have been measured, over the entire mole fraction range, by means of a Tian-Calvet microcalorimeter, for the systems: dipropylamine (DPA), or dibutylamine (DBA) + 2-propanone, + 2-butanone, + 2-pentanone, or + 2-heptanone. These data, together with those available in the literat...

Experimental densities, ρ, and speeds of sound, u, have been measured at (293.15–303.15) K for the systems methanol, 1-butanol or 1-decanol + 3,6,9-trioxaundecane using a vibrating-tube densimeter and sound analyzer Anton Paar model DSA-5000. These values were used to calculate excess molar volumes, , excess adiabatic compressibilities, , and exces...

Molar excess enthalpies, View the MathML sourceHmE, at 298.15 K and 0.1 MPa have been measured using a Tian–Calvet microcalorimeter for N ,N ,N -triethylamine (TEA) + 2-alkanone mixtures. These data have been used to determine ΔH N-CO, the enthalpy of the amine-ketone interaction, which is practically independent of the ketone size. This allows exp...

Liquid + liquid equilibrium (LLE) temperatures have been determined for the N-methylaniline + tetradecane, or +hexadecane systems by the method of the critical opalescence using a laser scattering technique. The coexistence curves have an upper critical solution temperature (UCST) and, due to size effects, are skewed towards high mole fractions of...

Linear alkanone or cyclohexanone + aromatic hydrocarbon mixtures have been studied using DISQUAC and the Kirkwood–Buff formalism. The aromatic compounds considered are: benzene, toluene, 1,4-dimethylbenzene, 1,2,4-trimethylbenzene and ethylbenzene. Vapour–liquid equilibria (VLE), molar excess Gibbs energies, GmE, molar excess enthalpies, HmE, and i...

Relative permittivities, ɛr, and refractive indices, nD, have been measured at (293.15–303.15) K, for the mixtures 1-pentanol + 2,5,8,11,14-pentaoxapentadecane (TEGDME) or TEGDME + octane. These data have been used, together with density measurements available in the literature, to calculate the correlation factors, gK, according to the Kirkwood–Fr...

Relative permittivities, ɛr and refractive indices, nD, have been measured at (288.15–308.15) K and (293.15–303.15) K, respectively, for the mixtures 1-pentanol + octane, or + dibutyl ether and dibutyl ether + octane. These data have been used, together with density measurements available in the literature, to determine the correlation factor, gk,...

The thermophysical properties densities, ρ, kinetic viscosities, ν, and refractive indices, nD, have been measured at atmospheric pressure and at (293.15–303.15) K for the mixtures cyclohexylamine + 1-propanol, or +1-butanol. The experimental ρ, ν, nD values were obtained using an Anton Paar DMA 602 vibrating-tube densimeter, an Ubbelohde viscosime...

Export Date: 13 August 2012, Source: Scopus, CODEN: JCEAA, doi: 10.1021/je300146k, Language of Original Document: English, Correspondence Address: González, J.A.; G.E.T.E.F., Grupo Especializado en Termodinámica de Equilibrio Entre Fases, Universidad de Valladolid, E-47071, Valladolid, Spain; email: jagl@termo.uva.es, References: González, J.A., Th...

Mixtures of a linear or cyclic ether + CCl4 have been studied using the Flory model and the Kirkwood–Buff integrals formalism. The relative variation of the molar excess enthalpy, HmE, along the homologous series of the investigated systems was investigated in terms of the contributions to HmE from the breaking of the ether–ether and CCl4–CCl4 inte...

1-Alkanol+polyether mixtures have been investigated using the Kirkwood–Buff formalism. The alcohols considered are methanol, ethanol or 1-propanol. The ethers are 3,6-dioxaoctane, 2,5,8-trioxanonane, 2,5,8,11,14-pentaoxapentadecane, polyethylene glycol 250 dimethyl ether (PEG-250), 1,3-dioxolane, 1,4-dioxane and 1,3,5-trioxane. Data for the Kirkwoo...

Densities, ρ, and speeds of sound, u, of {2-heptanone+dipropylamine (DPA), +dibutylamine (DBA), or +triethylamine (TEA)} systems have been measured at (293.15, 298.15, and 303.15)K and atmospheric pressure using a vibrating tube densimeter and sound analyzer Anton Paar model DSA-5000. The ρ and u values were used to calculate excess molar volumes,...

The coexistence curves of the liquid–liquid equilibria (LLE) for systems of 2-phenoxyethanol (2PhEE) with heptane, octane, cyclohexane, methylcyclohexane or ethylcyclohexane have been determined by the method of the critical opalescence using a laser scattering technique. All the curves show an upper critical solution temperature (UCST), have a rat...

Molar excess enthalpies, HmE, at 298.15 K and atmospheric pressure have been determined over the entire mole fraction range, using a Tian-Calvet microcalorimeter, for the systems: propanone, 2-butanone, 2-pentanone, or 2-heptanone + aniline or + N-methylaniline. The negative HmE values obtained for all of the mixtures reveal that interactions betwe...

Densities, ρ, and speeds of sound, u, of 2-pentanone+aniline, +N-methylaniline, or +pyridine systems have been measured at (293.15, 298.15 and 303.15) K and atmospheric pressure using a vibrating tube densimeter and sound analyzer Anton Paar model DSA-5000. The ρ and u values were used to calculate excess molar volumes, VmE, and the excess function...

Binary mixtures of triethylamine (TEA) and alkanols have been investigated in the framework of DISQUAC. The systems are built by three contacts: aliphatic–hydroxyl, aliphatic–nitrogen, and hydroxyl–nitrogen. The corresponding interaction parameters are reported and discussed. The former are avalilable in the literature but were modified (particular...

The ability of the DISQUAC model for predicting excess enthalpies (HE) of ternary systems on the basis of binary parameters only, i.e., neglecting ternary interactions is analyzed. At this end, DISQUAC results for a set of 95 ternary systems are examined. The solutions studied are formed by only hydrocarbons (or CCl4); or by one polar compound (not...

In this work, HmE data at 298.15 K for the systems 1-nonanol + n-C12; 1-nonanol + n-C14; 1-hexanol + 3,6,9-trioxaundecane; and 2-(2-butoxyethoxyethanol) + n-C7 are reported. Measurements were carried out with a standard Calvet-type microcalorimeter. Molar excess functions, including enthalpies and entropies, are carefully examined to report on the...

Alkoxyethanol + alkane systems have been examined in the framework of the ERAS model. An exact expression for the molar excess heat capacity at constant pressure, CPE, of solutions formed by a self-associated compound and an inert solvent has been derived. The CPE and the molar excess enthalpies (HE) and excess volumes (VE), as well as the molar en...

The excess molar enthalpy HE has been determined as a function of mole fraction x at 298.15 K and atmospheric pressure for five (2-butoxyethanol + n-alkane) mixtures. The n-alkanes were n-heptane, n-octane, n-decane, n-dodecane, and n-tetradecane. The mixtures show positive and unsymmetrical HE, skewed towards low mole fractions of 2-butoxyethanol,...

The available data in the literature on vapour–liquid equilibria, excess Gibbs energies, and excess enthalpies for linear ketones + linear mono- or poly-ether mixtures are examined in terms of the DISQUAC group contribution model. Interaction parameters are reported. The quasichemical interchange coefficients are independent of the compounds in the...

Thermodynamic properties: vapour–liquid equilibria, VLE, or excess enthalpies, HE, for a set of 21 ternary mixtures of the type 1-alkanol + n-alkanone + organic solvent are studied in the framework of the DISQUAC group contribution model. This treatment is extended to the binaries involved. The DISQUAC analysis is developed on the basis of binary i...

Mixtures containing sec-alkanols and benzene, toluene, or n-alkanones are characterized in terms of DISQUAC by means of structure-dependent interaction parameters. The quasichemical (QUAC) interchange coefficients are independent of the size alcohol for a given organic solvent; while the dispersive (DIS) ones change with the size of the alcohol. Th...

Linear or cyclic ether + benzene or +toluene mixtures have been investigated in terms of the DISQUAC and UNIFAC (Dortmund version) models as well as using the Kirkwood–Buff formalism. The corresponding DISQUAC interaction parameters are reported. The QUAC interaction parameters are independent of the aromatic compound, and those for l = 1 (Gibbs en...

The Flory model has been applied to linear or cyclic ether+benzene, or +toluene mixtures. In addition, the relative variation of the molar excess enthalpy, HmE, along homologous series of the considered systems, has been discussed taking into account the contributions to HmE from the ether–ether, aromatic–aromatic and ether–aromatic interactions. I...

Densities, ρ, and speeds of sound, u, of 2-butanone +dipropylamine, +dibutylamine or +triethylamine systems have been measured at (293.15, 298.15 and 303.15K) and atmospheric pressure using a vibrating-tube densimeter and sound analyser Anton Paar model DSA-5000. The ρ and u values were used to calculate excess molar volumes, VE, at the three tempe...

Densities, ρ, and speeds of sound, u, of 2-butanone + aniline, + N-methylaniline, or + pyridine systems have been measured at (293.15, 298.15, and 303.15) K and atmospheric pressure using a vibrating-tube densimeter and sound analyzer (Anton Paar model DSA-5000). The ρ and u values were used to calculate excess molar volumes, VE, and the excess fun...

Densities, ρ, and speeds of sound, u, of 2-propanone + dipropylamine, + dibutylamine or + triethylamine systems have been measured at (293.15, 298.15 and 303.15) K and atmospheric pressure using a vibrating tube densimeter and sound analyser Anton Paar model DSA-5000. The ρ and u values were used to calculate excess molar volumes, VE, and the exces...

Molar excess volumes at 298.15 K and atomospheric pressure for tripropylamine + n-hexane, + n-octane, + n-decane, + n-dodecane or + n hexadecane systems determined from densities measured with an Anton-Paar DMA 602 vibrating-tube densimeter are reported. N,N,N-trialkylamine + n-alkane systems have been studied using the Flory theory. Better results...

Densities, ρ, and speeds of sound, u, of 2-propanone + aniline, + N-methylaniline, or + pyridine systems have been measured at (293.15, 298.15, and 303.15) K and atmospheric pressure using a vibrating tube densimeter and sound analyzer (Anton Paar model DSA-5000). The ρ and u values were used to calculate excess molar volumes, VE, and the excess fu...

Thirty-four sets of data on solid-liquid equilibria for the entitled mixtures are examined in terms of DISQUAC. On the basis of data for systems containing n-octane, new first dispersive interchange coefficients are given for the hydroxyl/aliphatic contacts involved. They are constant from 1-hexadecanol. The remainder interchange coefficients are k...

The data available in the literature for the molar excess Gibbs energies GE, azeotropes, molar excess enthalpies HE, activity coefficients γi∞, and partial molar excess enthalpies HiE,∞, at infinite dilution, and molar excess heat capacities CpE, of n-alkan-1-ol (1) + n-alkane (2) mixtures are examined on the basis of the DISQUAC group contribution...

Molar excess enthalpies, HmE, at T=298.15K and atmospheric pressure have been measured using a microcalorimeter Tian-Calvet for the (methanol, 1-propanol, 1-butanol, 1-pentanol, 1-hexanol, 1-octanol, or 1-decanol+dibutylether) systems. Experimental results have been compared with those obtained from the ERAS, DISQUAC, and Dortmund UNIFAC models. DI...

The coexistence curves of the liquid−liquid equilibria (LLE) for (ε-caprolactam + heptane), (ε-caprolactam + octane), (ε-caprolactam + nonane), (ε-caprolactam + decane), and (ε-caprolactam + 2,2,4-trimethylpentane) have been determined by critical opalescence with a laser scattering technique. All the curves show an upper critical solution temperat...

Binary mixtures formed by a pyridine base and an alkane, or an aromatic hydrocarbon, or a 1-alkanol have been studied in the framework of the concentration–concentration structure factor, SCC(0), formalism. Deviations between experimental data and those provided by the DISQUAC model are discussed. Systems containing alkanes are characterized by hom...