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A kinetic study of the gas-phase esterification of free fatty acids in rubber seed oil

机译：橡胶种子油中游离脂肪酸气相酯化的动力学研究

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Using rubber seed oil with high acid value as material, the kinetics and technological conditions of gas-phase esterification of free fatty acids (FFA) with methanol was studied. Under the condition of a flow rate of gaseous methanol of 2.5L/min, the variables affecting the conversion rate during the gas-phase esterification, such as catalyst mount and reaction temperature, were investigated. The experimental results show that the final acid value of rubber seed oil is lower thanl.0 mg KOH/g oil within 30 min by the following optimal condition: a flow rate of gaseous methanol of 2.5L/min and a catalyst amount of 3% relative to oil and a temperature of 105°C. Under these conditions, the gas-phase esterification follows second order kinetic equation. The reaction velocity accelerates with increasing temperature and the relationship follows Arrhenius equation while the activation energy of reaction is 121.409 kJ·mol~(-1).
机译：使用橡胶籽油作为材料，研究了游离脂肪酸（FFA）气相酯化的动力学和技术条件与甲醇。在2.5L / min的气态甲醇的流速的条件下，研究了影响在气相酯化期间的转化率，例如催化剂安装和反应温度的变量。实验结果表明，在30分钟内通过以下最佳条件将橡胶种子油的最终酸值在30分钟内降低至0mg KOH / G油：2.5L / min的气态甲醇的流速，催化剂量为3％相对于油和105℃的温度。在这些条件下，气相酯化遵循二阶动力学方程。随着温度的增加，反应速度加速，并且在反应的激活能量的同时，关系遵循的关系是121.409 kJ·mol〜（-1）。

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