碳酸钾催化菜籽油与甲醇反应制备生物柴油的研究

Biodiesel Preparation from Rapeseed Oil with Methanol Catalyzed by Potassium Carbonate

以菜籽油和甲醇为原料,在碳酸钾作用下催化制备生物柴油,考察了反应温度、醇油物质的量比、催化剂用量对生物柴油产率的影响,建立了动力学模型,并利用该模型对试验数据进行拟合,估算出动力学参数:频率因子A为13.8,活化能ΔE为20.6 kJ/mol,并发现反应常数与催化剂用量呈线性关系,线性关系式可表示为k=k0+kwW。

To prepare biodiesel with rapeseed oil and methanol catalyzed by potassium carbonate, the effect of reaction temperature, mass ratio of methanol to oil and catalyst dosage on biodiesel yield was investigated. A kinetics model was established and the model was used to fit the experimental data, and the kinetics parameters were esti- mated. Results：The frequency factor A is 13.8 ,activation of energyAE is 20.6 kJ/mol. There is a linear relationship between reaction rate constant and catalyst dosage, and the linear relationship can be denoted as k = kο ＋ kw W.