Kinetics of palm oil methanolysis

被引：0
|
作者：
Narváez, P.C. [2 ]
Rincón, S.M. [1 ]
Sánchez, F.J. [1 ]
机构：
[1] Chemical Engineering Department, Universidad Nacional de Colombia, Bogotá, Colombia
[2] Laboratorio de Ingeniería Química, Universidad Nacional de Colombia Sede Bogotá, Edificio 412, Oficina, 212, Bogotá, Colombia
来源：
JAOCS, Journal of the American Oil Chemists' Society | 2007年 / 84卷 / 10期
关键词：
A kinetics study of palm oil methanolysis was conducted at three different temperatures and three different concentrations of catalyst; sodium hydroxide; keeping constant the molar ratio of methanol to oil and the rotational speed of the impeller (6:1 and 400 rpm). The maximum conversion of palm oil and productivity to methyl esters were obtained at 60°C and 1 wt% of NaOH based on palm oil; and they were 100 and 97.6%; respectively. The statistical analysis of conversions of palm oil and productivities to methyl esters as functions of temperature and concentration of catalyst; after 80 min of reaction; allowed them to fit second order polynomial equations; which adequately describe the experimental behavior. The experimental data appear to be a good fit into a second order kinetic model for the three stepwise reactions; and the reaction rate constants and the activation energies were determined. In this article we present the kinetic constant and activation energies for the experiments with 0.2% wt of NaOH. The effect of molar ratio on the concentration of products was investigated; while the temperature (55°C); the concentration of catalyst (0.60 wt% of NaOH); and the rotational speed (400 rpm); were held constant. The results showed that the conversion and the productivity increased due to methanol excess; and were higher for the reactions with a molar ratio of 6:1. © 2007 AOCS;
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页码：971 / 977
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