Noureddini and Zhu [12] studied the methanolysis of soybean oil with sodium hydroxide as catalyst, and, excluding the initial phase where the reaction is diffusion controlled, concluded that a second order model for the three consecutive reactions adequately describes the soybean oil methanolysis and that it is not necessary to incorporate the shunt reaction proposed by Freedman. Energies of activation, estimated by an expression similar to the Arrhenius equation, are in the range of 6.4–20 kcal/ gmol. Cheah and Choo [13] established that the global kinetics of the palm oil methanolysis (TG + 3M $ 3 EM + G), is appropriately represented by a second order irreversible model. The values of the kinetic constant for the reaction at 64 C and a molar ratio methanol to oil of 15:1 were 1.9 • 10–2, 4.5 • 10–2 and 9.9 • 10–2 L gmol–1 min–1, for 0.25, 0.50 and 0.75 wt% of NaOH based on the mass of oil, respectively
Noureddini and Zhu [12] studied the methanolysis of soybean oil with sodium hydroxide as catalyst, and, excluding the initial phase where the reaction is diffusion controlled, concluded that a second order model for the three consecutive reactions adequately describes the soybean oil methanolysis and that it is not necessary to incorporate the shunt reaction proposed by Freedman. Energies of activation, estimated by an expression similar to the Arrhenius equation, are in the range of 6.4–20 kcal/ gmol. Cheah and Choo [13] established that the global kinetics of the palm oil methanolysis (TG + 3M $ 3 EM + G), is appropriately represented by a second order irreversible model. The values of the kinetic constant for the reaction at 64 C and a molar ratio methanol to oil of 15:1 were 1.9 • 10–2, 4.5 • 10–2 and 9.9 • 10–2 L gmol–1 min–1, for 0.25, 0.50 and 0.75 wt% of NaOH based on the mass of oil, respectively
การแปล กรุณารอสักครู่..
