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Received February 9, 2022
Accepted March 15, 2022
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Experimental and computational phase behavior analysis of the PGME+CO2 and PGMEA+CO2 mixture at high pressures

Department of Chemical and Biomolecular Engineering, Chonnam National University, Yeosu, Jeonnam 59626, Korea 1Jaewon Industrial Co., Yeosu, Jeonnam 59618, Korea
Korean Journal of Chemical Engineering, October 2022, 39(10), 2783-2791(9), 10.1007/s11814-022-1110-7
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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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