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RESEARCH PRODUCT

Isobaric Vapor−Liquid Equilibria of the Water + 1-Propanol System at 30, 60, and 100 kPa

And Juan B. MontónCarmen GabaldónPaula MarzalManuel A. Rodrigo

subject

Activity coefficientBoiling pointUNIQUACVapor pressureChemistryGeneral Chemical EngineeringBoilingAzeotropeNon-random two-liquid modelThermodynamicsIsobaric processGeneral Chemistry

description

Isobaric vapor−liquid equilibria for the water + 1-propanol system are reported at 30, 60, and 100 kPa. The results were found to be thermodynamically consistent according to Van Ness−Byer−Gibbs, Kojima, and Wisniak methods. The system shows a minimum boiling azeotrope, and the azeotropic composition is scarcely shifted with pressure. Results were compared with literature values. The data were correlated with Margules, Van Laar, Wilson, NRTL, and UNIQUAC liquid-phase activity coefficient models.

https://doi.org/10.1021/je9601467