Measurement and Modeling of Surface Tensions of Asymmetric Systems: Heptane, Eicosane, Docosane, Tetracosane and their Mixtures

Antonio Queimada, Filipa A.E Silva, Ana I. Caco, Isabel M. Marrucho, Joao Coutinho

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsResearch

Abstract

To extend the surface tension database for heavy or asymmetric n-alkane mixtures, measurements were performed using the Wilhelmy plate method. Measured systems included the binary mixtures heptane + eicosane, heptane + docosane and heptane + tetracosane and the ternary mixture heptane + eicosane + tetracosane at temperatures from 313.15 K (or above the melting point of the mixture) up to 343.15 K. All the measurements were performed at atmospheric pressure. Using these data, along with data previously measured by us and collected from the literature, a recently proposed corresponding states model was assessed. It is shown that using a new generalized combining rule for the critical temperature, the data can be described with deviations of about 1% that is within the experimental uncertainty of the measurements. (C) 2003 Elsevier B.V. All rights reserved.
Original languageEnglish
Title of host publicationProccedings of the 15th Symposium on Thermophysical Properties, Boulder, Colorado
Publication date2003
Publication statusPublished - 2003
EventSymposium on Thermophysical Properties - Boulder, United States
Duration: 22 Jun 200327 Jun 2003
Conference number: 15

Conference

ConferenceSymposium on Thermophysical Properties
Number15
CountryUnited States
CityBoulder
Period22/06/200327/06/2003

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