Measurement of High-Pressure Phase Behavior for the Benzyl (Meth)Acrylate in Supercritical Carbon Dioxide from (313.2 to 393.2) K and Pressures from (6 to 24) MPa

Abstract

High-pressure phase behavior is obtained for CO2 (1) + benzyl acrylate (2) and CO2 (1) + benzyl methacrylate (2) systems at (313.2, 333.2, 353.2, 373.2, and 393.2) K and pressures up to 24.43 MPa. The solubility of monomers for the CO2 (1) + benzyl acrylate (2) and CO2 (1) + benzyl methacrylate (2) systems increases as the temperature increases at constant pressure. The CO2 (1) + benzyl acrylate (2) and CO2 (1) + benzyl methacrylate (2) systems exhibit type-I phase behavior. The experimental results for CO2 (1) + benzyl acrylate (2) and CO2 (1) + benzyl methacrylate (2) systems are correlated with the Peng–Robinson equation of state using a van der Waals one-fluid mixing rule including two adjustable parameters. Critical constants (Pc, Tc, and ω) are predicted with the Joback method and the Lee–Kesler method.