Journal
EUROPEAN JOURNAL OF LIPID SCIENCE AND TECHNOLOGY
Volume 106, Issue 12, Pages 831-836Publisher
WILEY
DOI: 10.1002/ejlt.200401011
Keywords
free fatty acids; esterification; acid catalysis; kinetic parameters
Categories
Ask authors/readers for more resources
The aim of this study was the determination of optimal conditions of free fatty acid esterification by methanol using acid catalyst, and the calculation of the kinetic parameters of this process. It was found that the reaction rate depends on the amount of the catalyst and the acidity of the reaction mixture. The reaction rate changes also depending on the reaction duration, especially during the first 15 min. Establishing the above mentioned parameters proved the effect of the agents on the reaction rate. Such dependence is characteristic to many heterogeneous processes. The data suggest that having excluded diffusion, the reaction order is about 1. Within the limits of the experimental conditions (free fatty acids 0.162mol//L-1.948mol/L, temperature 20-60 degreesC, constant mixing speed -850 min-1, 1% of catalyst (H2SO4)) the apparent energy of activation E-t is approximate to 13.3 kJ/mol, while pre-exponent A = 1.27. These parameters allow the assumption that diffusion restrictions are characteristic to the entire range of the concentrations and the reaction duration studied.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available