Giacomin, Wanderson R. Jr. published the artcilePhase Equilibrium Measurements and Thermodynamic Modeling of the Systems (CO2 + Ethyl Levulinate) and (CO2 + Levulinic Acid), Quality Control of 539-88-8, the main research area is phase equilibrium thermodn model system carbon dioxide ethyl levulinate.
This work reports phase equilibrium measurements and thermodn. modeling of the binary systems (CO2 + Et levulinate) and (CO2 + levulinic acid). Each composition was carried out in a high-pressure variable-volume view cell at temperatures ranging from 303.15 to 353.15 K and with CO2 mole fraction ranging from 0.4002 to 0.9751 for the system (CO2 + Et levulinate) and from 0.4083 to 0.9930 for the system (CO2 + levulinic acid). Under these conditions, only vapor-liquid phase transitions were observed The exptl. data were modeled with the Peng-Robinson cubic equation of state with the Boston-Mathias alpha function (PR-BM) and using the van der Waals quadratic mixing rule. The exptl. data of the system (CO2 + Et levulinate) were adequately represented by the thermodn. model with a unique set of binary interaction parameters, which were fitted from all isotherms. Whereas the exptl. data of the system (CO2 + levulinic acid) were only adequately represented with temperature-dependent binary interaction parameters.
Journal of Chemical & Engineering Data published new progress about Binary phase diagram. 539-88-8 belongs to class esters-buliding-blocks, name is Ethyl 4-oxopentanoate, and the molecular formula is C7H12O3, Quality Control of 539-88-8.
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