Phase Behavior of the System (Carbon Dioxide + n -Heptane + Methylbenzene): A Comparison between Experimental Data and SAFT-γ-Mie Predictions
File(s)
Accepted version
Author(s)
Al Ghafri, SZS
Maitland, GC
Trusler, JPM
Type
Journal Article
Abstract
In this work, we explore the capabilities of the statistical associating fluid theory for potentials of the Mie form with parameter estimation based on a group-contribution approach, SAFT-γ-Mie, to model the phase behavior of the (carbon dioxide + n-heptane + methylbenzene) system. In SAFT-γ-Mie, complex molecules are represented by fused segments representing the functional groups from which the molecule may be assembled. All interactions between groups, both like and unlike, were determined from experimental data on pure substances and binary mixtures involving CO2. A high-pressure high-temperature variable-volume view cell was used to measure the vapor–liquid phase behavior of ternary mixtures containing carbon dioxide, n-heptane, and methylbenzene over the temperature range 298–423 K at pressures up to 16 MPa. In these experiments, the mole ratio between n-heptane and methylbenzene in the ternary system was fixed at a series of specified values, and the bubble-curve and part of the dew-curve was measured under carbon dioxide addition along four isotherms.
Date Issued
2017-05-01
Date Acceptance
2017-04-19
Citation
Journal of Chemical and Engineering Data, 2017, 62 (9), pp.2826-2836
ISSN
1520-5134
Publisher
American Chemical Society
Start Page
2826
End Page
2836
Journal / Book Title
Journal of Chemical and Engineering Data
Volume
62
Issue
9
Copyright Statement
© 2017 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of Chemical and Engineering Data, after peer review and technical editing by the publisher. To access the final edited and published work see: http://dx.doi.org/10.1021/acs.jced.7b00145
Subjects
0904 Chemical Engineering
Chemical Engineering
Publication Status
Published