2026-04-29T18:21:04Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/49512024-11-05T10:57:50Zcom_10259_4393com_10259_5086com_10259_2604col_10259_4394
Liquid−Liquid Equilibria for 2‑Phenylethan-1-ol + Alkane Systems
Alonso Tristán, Cristina
González López, Juan Antonio
García de la Fuente, Isaías
Sanz, Luis Felipe
Cobos, José Carlos .
Ingeniería química
Chemical engineering
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
Junta de Castilla y León, under Project BU034U16 F.
2018-09-13T08:04:11Z
2019-02-08T03:45:06Z
2018-02
info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
0021-9568
http://hdl.handle.net/10259/4951
10.1021/acs.jced.7b00869
eng
Journal of Chemical and Engineering Data. 2013, V. 73, n. 2, p. 429–435
https://doi.org/10.1021/acs.jced.7b00869
info:eu-repo/grantAgreement/JCyL/BU034U16-F
info:eu-repo/semantics/openAccess
application/pdf
American Chemical Society