Phase behaviour of binary systems of lactones in carbon dioxide

Phase behavior of (CO2+methanol+lauric acid) system

“…For example, Benmbkki and Mansoori [43] used the PR-EoS with quadratic van der Waals mixing rule to model the phase behavior of highly polar systems and in this case almost both k ij and l ij are negative. Also Bender et al [44] and Borges et al [45] found negative values of k ij parameters for some systems using the same EoS and mixing rule, For the system presented in this work a negative value of k ij was obtained for the pair system {methanol (2) + lauric acid (3)}, which was fitted from ternary experimental data. Thus we believe that any discussion on physical significance of this binary behavior is relative.…”

High-pressure phase equilibrium data for the (carbon dioxide + l -lactide + ethanol) system

“…The experimental apparatus and procedure have been used in a variety of studies [20][21][22][23][24] and was extensively validated [25,26]. Briefly, the experimental setup consists of a variable-volume view cell with two sapphire windows (one for light input and one for visual observation), an absolute pressure transducer (Smar, model LD 301), a portable programmer (Smar, model HT 201) for pressure acquisition, and a syringe pump (ISCO, model 260D).…”

“…In this scenario, application of thermodynamic models may be relevant to describe the phase behaviour of multicomponent mixtures and hence may help elucidate the phenomena involved in the polymerization reaction as well as in the fractionation/separation of the products obtained [16]. Many cubic equations of state (EoS) have been proposed in the literature throughout the years [16,17], but undoubtedly the cubic Peng and Robinson EoS (PR-EoS) [18] with a variety of mixing rules has been one of the most successful models used to predict and correlate the phase equilibrium data of a large variety of systems reported in the literature [19][20][21].…”

Applications of Supercritical Fluids in Latin America: Past, Present and Future Trends

“…Supercritical fluid extraction of lycopene from tomato juice and characterization of its antioxidation activity 2010 [120] Recovery of gamma-oryzanol from rice bran oil byproduct using supercritical fluid extraction 2010 [121] Supercritical fluid extraction of peach (Prunus persica) almond oil: Process yield and extract composition 2010 [122] A study of the methods of carotenoid extraction in carrots using supercritical fluid extraction (SFE) and conventional methods 2010 [123] Supercritical fluid extraction from dried banana peel (Musa spp., genomic group AAB): Extraction yield, mathematical modeling, economic analysis and phase equilibria 2010 [124] Characterization and functional properties of macela (Achyrocline satureioides) extracts obtained by supercritical fluid extraction using mixtures of CO 2 plus ethanol 2010 [125] Extraction of the essential oil of abajeru (Chrysobalanus icaco) using supercritical CO 2 2010 [126] Fundamental & thermodynamic studies [133] Thermodynamic modeling of liquid-fluid phase equilibrium in supercritical ethylene plus copolymer plus co-solvent systems using the PC-SAFT equation of state 2010 [134] Phase behavior of binary systems of lactones in carbon dioxide 2010 [135] Phase behavior of the ternary system poly(epsilon-caprolactone) plus carbon dioxide plus dichloromethane 2010 [136] Phase equilibrium data and thermodynamic modeling of the system propane plus NMP plus methanol at high pressures 2010 [137] …”