|Title:||Behaviour of binary mixtures of an alkyl methanoate + an n-alkane. New experimental values and an interpretation using the UNIFAC model||Authors:||Ortega, Juan
Legido, José L.
Prediction, et al
|Issue Date:||1999||Publisher:||1463-9076||Journal:||Physical Chemistry Chemical Physics||Abstract:||This paper presents an interpretation on the behaviour of mixtures containing alkyl methanoates with n-alkanes from a structural point of view. New experimental data of molar excess properties, h(E) and v(E), are measured at 298.15 K and 101.32 kPa for this work to complete the existing information. Mixtures corresponding to methyl methanoate + n-alkanes showed excess quantities higher than expected because of the self-association of methyl methanoates, which decreases as the chain length/molar mass of alkyl methanoates increases. The consideration of autoassociation in methanoates, presented in this paper as an empirical relationship for its characterization as a function of number of carbon atoms of alkyl methanoate, was included as a specific term in the UNIFAC model that gave excellent results in the predictions of H(E), with mean differences smaller than 2%. In the Nitta model the association in methanoates was considered employing different forms of molecular interactions but the results were not so good.||URI:||http://hdl.handle.net/10553/48580||ISSN:||1463-9076||DOI:||10.1039/a901452g||Source:||Physical Chemistry Chemical Physics[ISSN 1463-9076],v. 1 (12), p. 2967-2974|
|Appears in Collections:||Artículos|
checked on Aug 14, 2022
WEB OF SCIENCETM
checked on Feb 20, 2022
checked on Jan 8, 2022
Items in accedaCRIS are protected by copyright, with all rights reserved, unless otherwise indicated.