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oai:riubu.ubu.es:10259/46992024-11-05T11:02:26Zcom_10259_4393com_10259_5086com_10259_2604col_10259_4394

2018-01-16T09:35:29Z urn:hdl:10259/4699 Thermodynamics of Mixtures Containing Aromatic Alcohols. 1. Liquid–Liquid Equilibria for (Phenylmethanol + Alkane) Systems González López, Juan Antonio Alonso Tristán, Cristina García de la Fuente, Isaías Cobos, José Carlos . The liquid−liquid equilibrium (LLE) curves for (phenylmethanol + CH3(CH2)nCH3) mixtures (n = 5, 6, 8, 10, 12) have been obtained by the critical opalescence method using a laser scattering technique. All of the systems show an upper critical solution temperature (UCST). In addition, the LLE curves have a rather horizontal top, and their symmetry depends on the alkane size. The UCST increases almost linearly with n. For systems including a given alkane and phenol or phenylmethanol, the UCST is much higher than that of the corresponding mixtures with hexan-1-ol or heptan-1-ol. This reveals that dipolar interactions are stronger in solutions with aromatic alcohols. Preliminary DISQUAC interaction parameters for OH/aliphatic contacts in the investigated systems were obtained. It is remarkable that the coordinates of the critical points of (phenol or phenylmethanol + alkane) mixtures can be described using the same quasichemical interaction parameters for the OH/aliphatic and OH/ aromatic contacts. 2018-01-16T09:35:29Z 2018-01-16T09:35:29Z 2012-04 info:eu-repo/semantics/article 0021-9568 http://hdl.handle.net/10259/4699 10.1021/je300146k eng Journal of Chemical and Engineering Data. 2012, V. 57, n. 4, p. 1186–1191 https://doi.org/10.1021/je300146k info:eu-repo/grantAgreement/MINECI/FIS2007-61833 info:eu-repo/semantics/openAccess American Chemical Society