Phase behavior studies of 2-hydroxyethyl methacrylate and methyl methacrylate in high-pressure carbon dioxide

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Herein, we report the cloud point measurements of the CO2 + 2-hydroxyethyl methacrylate (HEMA) and CO2 + methyl methacrylate (MMA) systems. Experimental data were obtained at (313.15, 323.15, and 338.15) K and pressures up to (10.5 and 21.1) MPa, respectively. The Soave-Redlich-Kwong equation of state with the Mathias-Klotz-Prausnitz mixing rule was used to model experimental results, and a good correlation was achieved. Both systems were shown to be temperature dependent, with a solubility decrease with increasing temperature. Comparing the two studied systems, it was possible to notice that CO2 + HEMA experimental data were shifted to higher pressures than those observed for the CO2 + MMA system. This behavior suggests that CO2-HEMA interactions are weaker than those established between CO2 and MMA.
Original languageUnknown
Pages (from-to)1970-1974
JournalJournal of Chemical and Engineering Data
Issue number5
Publication statusPublished - 1 Jan 2007

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