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 CO 2 (1) + benzyl acrylate (2) and CO 2 (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 CO 2 (1) + benzyl acrylate (2) and CO 2 (1) + benzyl methacrylate (2) systems increases as the temperature increases at constant pressure. The CO 2 (1) + benzyl acrylate (2) and CO 2 (1) + benzyl methacrylate (2) systems exhibit type-I phase behavior. The experimental results for CO 2 (1) + benzyl acrylate (2) and CO 2 (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 (P c , T c , and ω) are predicted with the Joback method and the Lee-Kesler method.

Solubility of Methyl Salicylate in Supercritical Carbon Dioxide at Several Temperatures

“…A number of equations of state (EOS) models are available, and the most widely used are the Peng and Robinson, ,− ,− which has the form P = R T ( V − b ) − a ( T ) V 2 + 2 b V − b 2 The pure component parameter a , which is a function of temperature and constant b , is given by a ( T ) = a · α ( T r , ω ) a = 0.45724 R 2 T c 2 P c b = 0.07780 R T c P c α ( T r , ω ) = ( 1 + normalκ<...…”

“…Details about eq 1 and its uses for supercritical equilibria can be found elsewhere. 10 A number of equations of state (EOS) models are available, and the most widely used are the Peng and Robinson, 1,[4][5][6][7][11][12][13][14] which has the form…”

High-Pressure Phase Behavior for Poly[dodecyl methacrylate] + Supercritical Solvents + Cosolvents and Carbon Dioxide + Dodecyl Methacrylate Mixture

“…The phase behavior measurements are carried out by using a variable-volume view cell that has been described in detail elsewhere. 2,[24][25][26] We obtain cloud-point curves for P(DDMA) + supercritical solvents + DDMA (or DME) mixture 24,25 and pressure-composition isotherms for CO 2 + DDMA mixture using the high-pressure experimental apparatus. 2,26 The pressure inside the cell is measured with a Heise gauge (Dresser Ind., model CM-108952, 0-345.0 MPa, accurate to within (0.35 MPa) and high-pressure generator (HIP Inc., model 37-5.75-60).…”

Phase behavior measurement for the binary mixture of CO2+ neopentyl glycol diacrylate and CO2+ neopentyl glycol dimethacrylate systems at high pressure

“…The chemical separation technology based on phase behavior containing supercritical fluid is supported by abundant theoretical backgrounds and experimental data [1]. For the phase equilibrium experiments, we have been recently reported on the bubble-, dew-and criticalpoint behavior of binary (meth)acrylate mixtures in supercritical carbon dioxide [2][3][4]. When designing plants for the carbon dioxide + monomer mixture for separation processes, one must first characterize the phase behavior of the monomer in the supercritical carbon dioxide.…”

“…According to calculated result, the critical mixture curve was type-I.Fig. 6plots k ij and Á ij parameters against temperature for the CO 2 + NPGDA (above) and CO2 + NPGDMA (bottom) systems with the Peng-Robinson equation of state. The parameter equation of the fitting line was k ij = 0.025 and Á ij = 0.00037T − 0.0132 (313.2 K ≤ T ≤ 393.2 K) determined by Peng-Robinson equation of state for the CO 2 + NPGDA (above).…”