Engenharia Química

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Navegando Engenharia Química por Assunto "Acetonitrile"

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    Artigo
    Volumetric properties of binary mixtures of (acetonitrile + amines) at several temperatures with application of the ERAS model
    (2016) Bittencourt S.S.; Torres R.B.
    © 2015 Elsevier Ltd. All rights reserved.Densities of binary mixtures of {acetonitrile + n-propylamine, or + n-butylamine, or + di-n-propylamine, or + di-n-butylamine, or + t-butylamine, or + triethylamine} at T = (293.15, 298.15, 303.15 and 308.15) K and atmospheric pressure are reported over the whole composition range. A vibrating-tube densimeter was used to determine the densities. The excess molar volume, VmE, was calculated from these results and correlated to the Redlich-Kister equation. The VmE values were negative for all the studied systems, except for the (acetonitrile + di-n-butylamine) binary mixtures which presented sigmoid behavior with positive values at high acetonitrile concentration. The partial molar volumes at infinite dilution of each component have been determined using three different methods. The VmE experimental results were also used to test the applicability of the Extended Real Association Solution model (ERAS model).
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    Artigo
    Volumetric properties of binary mixtures of acetonitrile and alcohols at different temperatures and atmospheric pressure
    (2007) Torres R.B.; Francesconi A.Z.; Volpe P.L.O.
    In this work, densities and excess molar volume data of binary mixtures of acetonitrile + methanol, or + ethanol, or + 1-propanol, or + 1-butanol as a function of composition, under atmospheric pressure and at 288.15, 293.15, 298.15 and 303.15 K have been used to calculate partial molar volumes (V-i), excess partial molar volumes (V-iE) and apparent molar volumes (Vφ{symbol}i) of each component. The partial molar volumes at infinite dilution (V-i∞) have been determined using three different methods. © 2006 Elsevier B.V. All rights reserved.
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    Artigo
    Volumetric properties of binary mixtures of ethers and acetonitrile: Experimental results and application of the Prigogine-Flory-Patterson theory
    (2008) Torres R.B.; Ortolan M.I.; Volpe P.L.O.
    In this work, densities of binary mixtures of {acetonitrile + di-n-butyl ether (DNBE), or + tetrahydrofuran (THF), or + 1,4-dioxane (DIO), or + di-isopropyl ether (DIPE)}, have been determined under atmospheric pressure as a function of composition and temperature using a vibrating-tube densimeter. The temperatures studied were T = (288.15, 293.15, 298.15, and 303.15) K. The excess molar volumes (VmE), calculated from density data, are negative over the whole mole fraction range for the temperature range studied. The partial molar volumes at infinite dilution of each component (over(V, -)i∞) have been determined using three different methods. The experimental results have been used to test the applicability of the Prigogine-Flory-Patterson (PFP) theory. © 2007 Elsevier Ltd. All rights reserved.
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    Artigo
    Volumetric, acoustic and viscometric properties of binary mixtures containing acetonitrile with glycols at several temperatures: Experimental study and correlations
    (2022-10-01) ROSA MILLE, M.; EMI HOGA, H.; VIEIRA, OLIVIERI, G.; Ricardo Torres
    © 2022 Elsevier LtdDensity, speed of sound and viscosity of binary mixtures of {acetonitrile + ethylene glycol (EG), or + diethylene glycol (DEG), or + triethylene glycol (TEG)} have been measured as a function of compositions at temperatures of 288.15, 293.15, 298.15 and 303.15 K and under atmospheric pressure. Excess molar volume, partial molar volume, excess partial molar volume, deviation in isentropic compressibility and deviation in viscosity were determined and excess properties have been fitted to the Redlich-Kister equation. The empirical models developed by Grünberg-Nissan, Heric-Brewer, Katti-Chaudhary and Van der Wyk were used to correlate the experimental viscosity data. The excess molar volume was also used to test the applicability of the Peng-Robinson-Stryjek-Vera equation of state (PRSV EOS).