Phase equilibria of (CO2 + butylbenzene) and (CO2 + butylcyclohexane) at temperatures between (323.15 and 423.15) K and at pressures up to 21 MPa
File(s)
Accepted version
Author(s)
Hou, S-X
Maitland, GC
Trusler, JPM
Type
Journal Article
Abstract
Experimental measurements of the phase equilibria of (CO2 + butylbenzene) and (CO2 + butylcyclohexane) have been made with an analytical apparatus at temperatures of (323.15, 373.15 and 423.15) K at pressures from 2 MPa to the mixture critical pressure. These are the first results to be published for (CO2 + butylcyclohexane), while for (CO2 + butylbenzene) they are the first at pressures above 6 MPa. To model the data, we use the Peng–Robinson equation of state with Wong–Sandler mixing rules incorporating the NRTL equation. The model describes the measured bubble point curves very well at all temperatures, except close to the mixture critical points at high pressures. The dew point curves are described well only at the lowest temperature; otherwise, deviations increase in the approach to the mixture critical point.
Date Issued
2014-12-12
Date Acceptance
2014-12-08
Citation
Fluid Phase Equilibria, 2014, 387, pp.111-116
ISSN
0378-3812
Publisher
Elsevier
Start Page
111
End Page
116
Journal / Book Title
Fluid Phase Equilibria
Volume
387
Copyright Statement
© 2015, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Subjects
Science & Technology
Physical Sciences
Technology
Thermodynamics
Chemistry, Physical
Engineering, Chemical
Chemistry
Engineering
Phase equilibria
CO2
Butylbenzene
Butylcyclohexane
Peng-Robinson equation of state
Wong-Sandler mixing rules
CARBON-DIOXIDE
STATE
MIXTURES
BEHAVIOR
EQUATION
Publication Status
Published