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Título : Liquid−Liquid Equilibria for 2‑Phenylethan-1-ol + Alkane Systems
Autor : Alonso Tristán, Cristina
González, Juan Antonio .
García de la Fuente, Isaías .
Sanz, Luis Felipe .
Cobos, José Carlos .
Publicado en: Journal of Chemical and Engineering Data. 2013, V. 73, n. 2, p. 429–435
Editorial : American Chemical Society
Fecha de publicación : feb-2018
Fecha de disponibilidad: 8-feb-2019
ISSN : 0021-9568
DOI: 10.1021/acs.jced.7b00869
Resumen : 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 temperature (UCST), which increases linearly with the number of C atoms of the n-alkane. In addition, the LLE curves have a rather horizontal top and become skewed to higher mole fractions of the n-alkane, when its size increases. For a given n-alkane, UCST decreases as follows: phenol > phenylmethanol > 2-PhEtOH, indicating that dipolar interactions decrease in the same sequence. This has been ascribed to a weakening in the same order of the proximity effects between the phenyl and OH groups of the aromatic alkanols. DISQUAC interaction parameters for OH/aliphatic and OH/aromatic contacts in the investigated systems are reported. Phenol, or phenylmethanol or 2-PhEtOH, + n-alkane mixtures only differ by the first dispersive Gibbs energy interaction parameter for the (OH/aliphatic) contact
Materia: Ingeniería química
Chemical engineering
URI : http://hdl.handle.net/10259/4951
Versión del editor: https://doi.org/10.1021/acs.jced.7b00869
Aparece en las colecciones: Artículos SWIFT

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