1 research outputs found
Thermodynamics of Phase and Chemical Equilibrium in the Processes of Biodiesel Fuel Synthesis in Subcritical and Supercritical Methanol
No full textThermodynamic data (critical parameters, enthalpy, entropy)
were
calculated for the monoglycerides, diglycerides, and triglycerides
of fatty acids (palmitic, oleic and linoleic), free fatty acids, and
methyl esters of fatty acids, which are involved in the transesterification
of vegetable oils with lower alcohols. Phase diagrams of the reaction
mixtures were calculated and reaction conditions providing supercritical
state of the reaction mixture were selected for transesterification
of triglycerides in various lower alcohols. Chemical equilibrium of
the methanol transesterification of simple and mixed fatty acid triglycerides
was studied in a wide range of temperatures, pressures, and ratios
of initial components, including the region of supercritical state
of the reaction mixture. Calculation of the phase equilibrium and
equilibrium composition of the reaction products obtained by transesterification
of triglycerides with lower alcohols allowed choosing the optimal
reaction conditions for practical application
