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- W2627014769 abstract "ABSTRACTThis study investigated the kinetics of transesterification of castor oil with methanol by absorbance measurement using ultraviolet-visible (UV-Vis) spectroscopy. The transesterification reaction was carried out at determined optimum reaction conditions of catalyst concentration of 1.0 wt.% KOH, temperature of 50°C and methanol-to-oil molar ratio of 9:1. The progress of the reaction was monitored by measuring the absorbance of the reaction mixture at intervals for 1 h using a UV-Vis spectrophotometer at a wavelength of 700 nm. Concentration of glycerol formed during the reaction was calculated from the measured absorbance of the reaction mixture. First-, second- and third-order reaction kinetic models with respect to castor oil were used to analyze the kinetic data by the integral method. Based on the correlation coefficient (R2) of the models tested, the second-order kinetic model best described the reaction, with a reaction rate constant of 7.221 L/mol.min at 50°C. Activation energy for the reac..." @default.
- W2627014769 created "2017-06-23" @default.
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- W2627014769 date "2017-06-15" @default.
- W2627014769 modified "2023-09-25" @default.
- W2627014769 title "Monitoring the transesterification reaction of castor oil and methanol by ultraviolet visible spectroscopy" @default.
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- W2627014769 doi "https://doi.org/10.1080/17597269.2017.1338128" @default.
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