HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

High-Pressure Phase Equilibria Measurements of the Carbon Dioxide + Cycloheptane Binary System

Abstract : The phase behavior of the carbon dioxide + cycloheptane binary system for which no literature data are available has been examined at temperatures ranging from 292.6 to 372.8 K. Saturation pressures, ranging from 23.9 to 154.8 bar, were acquired by a synthetic and visual method. In concrete terms, an adjustable-volume high-pressure cell was utilized to measure bubble and dew point pressures by visual detection of phase transitions at constant overall composition. A total of 11 different mixtures with mole fractions of carbon dioxide ranging from 0.20 to 0.96 were prepared, and a total of 99 experimental points were reported. The experimental results obtained in this work reveal the absence of liquid–liquid immiscibility in the studied temperature range and make it possible to conclude that the vapor–liquid critical line of the binary system is continuous and uninterrupted between the two pure compounds. Experimental data were correlated with the Peng–Robinson equation of state and classical van der Waals mixing rules with temperature-dependent binary interaction parameters. They were also compared to the PPR78 model, an entirely predictive group contribution method in which the kij depends on temperature.
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-03510148
Contributor : Stéphane Vitu Connect in order to contact the contributor
Submitted on : Tuesday, January 4, 2022 - 2:16:06 PM
Last modification on : Wednesday, May 11, 2022 - 4:39:49 AM

File

 Restricted access
To satisfy the distribution rights of the publisher, the document is embargoed until : 2022-06-29

Please log in to resquest access to the document

Identifiers

Citation

Sarra Zid, Jean-Patrick Bazile, Jean-Luc Daridon, Jean-Noël Jaubert, Jean-Louis Havet, et al.. High-Pressure Phase Equilibria Measurements of the Carbon Dioxide + Cycloheptane Binary System. Journal of Chemical and Engineering Data, American Chemical Society, 2021, 67 (1), pp.176-181. ⟨10.1021/acs.jced.1c00848⟩. ⟨hal-03510148⟩

Share

Metrics

Record views

81