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  1. Artikel: Surface Tensions of Alkyl Lactates with

    Almodovar, Carmen / Artigas, Héctor / Wacharine, Saoussen / Antar, Kaïs / Lafuente, Carlos

    Journal of chemical and engineering data

    2022  Band 68, Heft 1, Seite(n) 100–107

    Abstract: The surface behavior of 18 binary mixtures ... ...

    Abstract The surface behavior of 18 binary mixtures at
    Sprache Englisch
    Erscheinungsdatum 2022-12-28
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 1491128-0
    ISSN 1520-5134 ; 0021-9568
    ISSN (online) 1520-5134
    ISSN 0021-9568
    DOI 10.1021/acs.jced.2c00629
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel: Thermophysical Study of Pyridinium-Based Ionic Liquids Sharing Ions.

    Reinado, Christian / Pelegrina, Adrián / Sánchez-Rubio, Miguel / Artigas, Héctor / Lafuente, Carlos

    Journal of chemical and engineering data

    2022  Band 67, Heft 3, Seite(n) 636–643

    Abstract: The thermophysical properties of three pyridinium-based ionic liquids sharing ions were measured at several temperatures (278.15-338.15) K and at atmospheric pressure (0.1 MPa). Three ionic liquids were studied: 1-butylpyridinium bis(trifluoromethyl- ... ...

    Abstract The thermophysical properties of three pyridinium-based ionic liquids sharing ions were measured at several temperatures (278.15-338.15) K and at atmospheric pressure (0.1 MPa). Three ionic liquids were studied: 1-butylpyridinium bis(trifluoromethyl-sulfonyl)imide, 1-hexylpyridinium bis(trifluoromethylsulfonyl)imide, and 1-hexylpyridinium tetrafluoroborate. The following thermophysical properties were measured: density, speed of sound, refractive index, surface tension, isobaric molar heat capacity, kinematic viscosity, and electrical conductivity. The thermophysical properties at atmospheric pressure were correlated with temperature, noting that the starting temperature for the speed of sound measurements depended on the ionic liquid. From these experimental results, some derived properties (isentropic compressibility, molar refraction, and dynamic viscosity) are calculated. These results together with those published previously for 1-butylpyridinium tetrafluoroborate are discussed.
    Sprache Englisch
    Erscheinungsdatum 2022-02-10
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 1491128-0
    ISSN 1520-5134 ; 0021-9568
    ISSN (online) 1520-5134
    ISSN 0021-9568
    DOI 10.1021/acs.jced.1c00925
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel: Phase equilibrium of binary mixtures of cyclic ethers + chlorobutane isomers: experimental measurements and SAFT-VR modeling.

    Giner, Beatriz / Gascón, Ignacio / Artigas, Héctor / Lafuente, Carlos / Galindo, Amparo

    The journal of physical chemistry. B

    2007  Band 111, Heft 32, Seite(n) 9588–9597

    Abstract: The phase equilibria (experimental and modeled) of eight binary mixtures each formed by a cyclic ether (1,3-dioxolane or 1,4-dioxane) and a chlorobutane isomer (1-chlorobutane, 2-chlorobutane, 1-chloro-2-methylpropane, or 2-chloro-2-methylpropane) are ... ...

    Abstract The phase equilibria (experimental and modeled) of eight binary mixtures each formed by a cyclic ether (1,3-dioxolane or 1,4-dioxane) and a chlorobutane isomer (1-chlorobutane, 2-chlorobutane, 1-chloro-2-methylpropane, or 2-chloro-2-methylpropane) are presented. New experimental vapor-liquid equilibrium data at isothermal conditions (298.15, 313.15, and 328.15 K) has been obtained, and the statistical associating fluid theory for potentials of variable range (SAFT-VR) is used to model the mixtures. The results are discussed in terms of both the molecular characteristics of the pure compounds and the unlike intermolecular interactions present in the mixtures. The SAFT-VR approach is first used together with standard combining rules without adjustable parameters in order to predict the phase behavior at isothermal conditions. Good agreement between experiment and the prediction is found with such a model. Mean absolute deviations for pressures lie between 1 and 3 kPa, while for vapor phase compositions are less than 0.03 in mole fraction. However, a better agreement, can be obtained by introducing one adjustable parameter kij, which modifies the strength of the dispersion interaction between unlike components in the mixtures. This parameter is adjusted so as to model the phase equilibrium of the whole family of mixtures studied here at isothermal and isobaric conditions. We find that a unique unlike parameter kij is valid for all the studied mixtures and it is not temperature or pressure dependent. This unique transferable parameter together with the SAFT-VR approach provide a description of the vapor-liquid equilibrium of the mixtures that is in excellent agreement with the experimental data. In this case, the absolute deviations are of the order of 0.001 in mole fraction for vapor-phase compositions and less than 1 kPa for pressure.
    Sprache Englisch
    Erscheinungsdatum 2007-08-16
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ISSN 1520-6106
    ISSN 1520-6106
    DOI 10.1021/jp073163j
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel: Thermophysic comparative study of two isomeric pyridinium-based ionic liquids.

    Bandrés, Isabel / Giner, Beatriz / Artigas, Héctor / Royo, Félix M / Lafuente, Carlos

    The journal of physical chemistry. B

    2008  Band 112, Heft 10, Seite(n) 3077–3084

    Abstract: A comprehensive thermophysical study of isomeric room-temperature ionic liquids n-butyl-3-methyl-pyridinium tetrafluoroborate and n-butyl-4-methyl-pyridinium tetrafluoroborate has been performed. This paper reports various experimental data including ... ...

    Abstract A comprehensive thermophysical study of isomeric room-temperature ionic liquids n-butyl-3-methyl-pyridinium tetrafluoroborate and n-butyl-4-methyl-pyridinium tetrafluoroborate has been performed. This paper reports various experimental data including density, speed of sound, refractive index, surface tension, isobaric molar heat capacity, and kinematic viscosity. From the experimental results, coefficients of thermal expansion, dynamic viscosities and molar refractions of the studied ionic liquids have been determined. Results have been analyzed paying special attention to the different features of the isomers and their structural differences. Several theories and empirical relations have been applied in order to predict physical properties of ionic liquids. A good agreement between experimental and calculated data has been found. Furthermore, a study about the versatility and application of the different relationships has been carried out finding that in general density and coefficients of thermal expansion can be estimated with relatively good accuracy.
    Sprache Englisch
    Erscheinungsdatum 2008-03-13
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ISSN 1520-6106
    ISSN 1520-6106
    DOI 10.1021/jp077259p
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel: Study of weak molecular interactions through thermodynamic mixing properties.

    Giner, Beatriz / Martín, Santiago / Artigas, Héctor / López, María C / Lafuente, Carlos

    The journal of physical chemistry. B

    2006  Band 110, Heft 35, Seite(n) 17683–17690

    Abstract: The electron donor-acceptor abilities of some cyclic ethers (tetrahydropyran or tetrahydrofuran), benzene, and halobenzenes (fluorobenzene or chlorobenzene) and the molecular interactions between these compounds have been investigated through a wide set ... ...

    Abstract The electron donor-acceptor abilities of some cyclic ethers (tetrahydropyran or tetrahydrofuran), benzene, and halobenzenes (fluorobenzene or chlorobenzene) and the molecular interactions between these compounds have been investigated through a wide set of thermodynamic mixing properties of their mixtures. The mixing properties have been derived from experimental measurements of density, speed of sound, refractive index, surface tension, heat of mixing, and vapor-liquid equilibrium at the temperature of 298.15 K.
    Sprache Englisch
    Erscheinungsdatum 2006-09-07
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ISSN 1520-6106
    ISSN 1520-6106
    DOI 10.1021/jp062583q
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  6. Artikel: Surface behavior of the 1-bromobutane with isomeric butanol mixtures.

    Giner, Beatriz / Gascón, Ignacio / Artigas, Héctor / Royo, Félix M / Lafuente, Carlos

    The journal of physical chemistry. B

    2005  Band 109, Heft 48, Seite(n) 23096–23102

    Abstract: Surface tensions of the 1-bromobutane with isomeric butanol mixtures were measured in the temperature range 283.15 K (or 298.15 K for 2-methyl-2-propanol) to 313.15 K with a drop volume tensiometer, and the corresponding surface tension deviations were ... ...

    Abstract Surface tensions of the 1-bromobutane with isomeric butanol mixtures were measured in the temperature range 283.15 K (or 298.15 K for 2-methyl-2-propanol) to 313.15 K with a drop volume tensiometer, and the corresponding surface tension deviations were calculated. Using this information together with bulk thermodynamic properties a thermodynamic study on surface formation was presented. This study includes the calculation of excess surface compositions and excess properties of surface formation.
    Sprache Englisch
    Erscheinungsdatum 2005-12-08
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ISSN 1520-6106
    ISSN 1520-6106
    DOI 10.1021/jp053381h
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  7. Artikel: Thermophysical study of the n-hexane or n-heptane with 1-chloropropane systems

    Alonso, Enrique / Guerrero, Hernando / Montaño, Diego / Lafuente, Carlos / Artigas, Héctor

    Thermochimica acta

    Band v. 525,, Heft no. 1

    Abstract: Densities, speeds of sound and refractive indices at atmospheric pressure and at a temperature range of 283.15–313.15K, and isothermal vapour liquid equilibrium at 298.15K for the binary mixtures of n-hexane or n-heptane with 1-chloropropane have been ... ...

    Abstract Densities, speeds of sound and refractive indices at atmospheric pressure and at a temperature range of 283.15–313.15K, and isothermal vapour liquid equilibrium at 298.15K for the binary mixtures of n-hexane or n-heptane with 1-chloropropane have been determined. Excess volumes, excess isentropic compressibilities, refractive index deviations and excess Gibbs functions were calculated from the experimental data. All these properties provide an insight into the nature of interactions operating on the present systems.
    Schlagwörter vapors ; hexane ; atmospheric pressure ; refractive index ; temperature
    Sprache Englisch
    Dokumenttyp Artikel
    ISSN 0040-6031
    Datenquelle AGRIS - International Information System for the Agricultural Sciences and Technology

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