Abstract
The vapor+liquid equilibrium (VLE) for the 2-components of propylene glycol monomethyl ether (PGME) and propylene glycol monomethyl ether acetate (PGMEA) in high pressure (HP) supercritical carbon dioxide (S-CO2) was evaluated. The solubility data determination was performed by the synthetic method at T=(313.2 to 393.2) K and p=(1.92 to 16.5) MPa. The obtained results indicated that the solubility of S-CO2 was found to increase monotonically with the increase of system temperature and mole fraction of PGME and PGMEA in binary (solute+solvent) mixtures. The solubility curve of PGME and PGMEA in the PGME+S-CO2 and PGMEA+S-CO2 models increases in connection with the increasing T at a steady pressure. The PGME+S-CO2 and PGMEA+S-CO2 models reveal type-I phase behavior (PB). The critical properties were achieved by Joback and Aspen plus method. Moreover, the experimental result adequately correlated with the Peng-Robinson equation of state (P-R E-O-S). Root mean square deviation (RMSD) for the PGME+S-CO2 [Joback: kij=0.0, hij=−0.060, Aspen: kij=0.0, hij=−0.065] and PGMEA+S-CO2 [Joback: kij=0.0, hij=0.0, Aspen: kij=0.0, hij=0.0] systems using two factors determined at 353.2 K was 9.07% (Joback), 10.98% (Aspen) and 4.03% (Joback), 4.78% (Aspen), respectively.
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Abbreviations
- a:
-
fascination factor [Pa-m6/mol2]
- b:
-
Co-volume factor [m3/mol]
- BP:
-
bubble point [MPa]
- CP:
-
critical point
- DP:
-
dew point
- N:
-
number of the data points
- P:
-
pressure [Pa]
- R:
-
universal gas constant [8.314462 J/(mol·K)]
- T:
-
temperature [K]
- v:
-
molar volume [m3·mol−1]
- x:
-
liquid phase mole fractions
- α :
-
alpha function
- ω :
-
acentric factor
- E-O-S :
-
equation of state
- OF :
-
objective function
- P-R :
-
Peng-Robinson
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Acknowledgements
This research was supported by Ministry of Trade, Industry & Energy (MOTIE), Korea Institute for Advancement of Technology (KIAT) through “A supporting program for the middle market enterprises in each region” (No. P0017536).
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Kwon, YT., Dhamodharan, D., Choi, H. et al. Experimental and computational phase behavior analysis of the PGME+CO2 and PGMEA+CO2 mixture at high pressures. Korean J. Chem. Eng. 39, 2783–2791 (2022). https://doi.org/10.1007/s11814-022-1110-7
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DOI: https://doi.org/10.1007/s11814-022-1110-7