Abstract
This paper presents a new experimental VLE property data in the binary system of carbon dioxide – n-tetradecane at three selected isotherms of 313.15 K, 333.15 K, and 353.15 K in the pressure range from (3.8 to 19.0) MPa. The measurements were made using a high-temperature and high-pressure optical cell. The standard absolute u and relativeur uncertainties of temperature, pressure, concentration measurements are: u(T)=7.5 mK; ur(P)=0.00025; ur(x)=0.015; and ur(y)=0.015. The measured VLE data were used to determine the criticalPC-TC curve data. Based on the derived values of the critical parameters of CO2+n-tetradecane mixture the value (-67.58 MPa) of the Krichevskii parameter has been determined. The predictive capabilities of the perturbed chain-statistical associating fluid theory (PC-SAFT), the critical point-based modification of PC-SAFT (CP-PC-SAFT), and the Enhanced-Predictive-Peng-Robinson-78 (E-PPR78) models were examined.
| Original language | English |
|---|---|
| Article number | 113615 |
| Journal | Fluid Phase Equilibria |
| Volume | 564 |
| DOIs | |
| State | Published - Jan 2023 |
Keywords
- CO+n-tetradecane mixture
- Critical curve
- Equation of state
- Krichevskii parameter
- Phase diagram
- Supercritical solvent
- VLE measurements
All Science Journal Classification (ASJC) codes
- General Chemical Engineering
- General Physics and Astronomy
- Physical and Theoretical Chemistry