Phase equilibrium properties of binary aqueous solutions of benzylamine, 1,2-bis(2-aminoethoxy)ethane,or 2-[2-(dimethylamino)ethoxy]ethanol |
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| Authors: | Aouicha Belabbaci Ilham Mokbel Ahmed Ait Kaci Jacques Jose Latifa Negadi |
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| Institution: | 1. University Abou Bekr Belkaid of Tlemcen, Faculty of Sciences, Department of Chemistry, P.O. Box 119, Tlemcen 13000, Algeria;2. LSA, Laboratoire des Sciences Analytiques, CNRS-UMR 5180, Université Claude Bernard, Lyon I. 43, Bd du 11 Novembre 1918, Villeurbanne Cedex 69622, France;3. Laboratoire de Thermodynamique et Modélisation Moléculaire, Université Houari Boumédiène des Sciences et Technologie, P.O. Box 132, 16111 El Alia, Bab ezzouar, Algeria |
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| Abstract: | The vapour pressures of (benzylamine + water), {1,2-bis(2-aminoethoxy)ethane + water}, or {2-2-(dimethylamino)ethoxy]ethanol + water} binary mixtures, and pure 2-2-(dimethylamino)ethoxy]ethanol component were measured by means of two static devices at temperatures between (283.15 and 363.15 (or 323.15)) K. The data were correlated with the Antoine equation. From these data, excess Gibbs functions (GE) were calculated for several constant temperatures and fitted to a fourth-order Redlich–Kister equation using the Barker’s method. The (benzylamine + water) binary mixture exhibits positive deviations in GE for (303.15 < T/K < 323.15) and a sinusoidal shape in GE for T > 323.15 K over the whole composition range. The aqueous 1,2-bis(2-aminoethoxy)ethane or {2-2-(dimethylamino)ethoxy]ethanol + water} solutions exhibit negative deviations in GE for all investigated temperatures over the whole composition range. |
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