Measurement and Correlation of Vapor−Liquid Equilibria for the Ethanol + n-Heptane System near the Critical Region

Isothermal VLE data for ethanol + n-heptane have been obtained at near-critical temperatures. The critical pressures determined from the critical opalescence of the mixtures were compared with published work for ethanol + n-butane, ethanol + n-pentane, and ethanol + n-hexane systems. A circulating t...

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Bibliographic Details
Published inJournal of chemical and engineering data Vol. 47; no. 4; pp. 974 - 977
Main Authors Seo, Jungha, Lee, Sanghak, Kim, Hwayong
Format Journal Article
LanguageEnglish
Published American Chemical Society 11.07.2002
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Summary:Isothermal VLE data for ethanol + n-heptane have been obtained at near-critical temperatures. The critical pressures determined from the critical opalescence of the mixtures were compared with published work for ethanol + n-butane, ethanol + n-pentane, and ethanol + n-hexane systems. A circulating type apparatus with a view cell has been used. These mixtures are highly nonideal because of the association of ethanol, and the data could be correlated with sufficient accuracy by using the Peng−Robinson-Stryjek−Vera (PRSV) equation of state with Wong−Sandler mixing rules.
Bibliography:ark:/67375/TPS-RNRTRZSH-J
istex:A5C41D4E774D320964EF6206374F2200A4366545
ISSN:0021-9568
1520-5134
DOI:10.1021/je0200057