金雀花籽油游离脂肪酸的微波辅助酯化动力学研究。
Kinetic study on microwave-assisted esterification of free fatty acids derived from Ceiba pentandra Seed Oil.
机构信息
Biomass Processing Lab, Center for Biofuel and Biochemical Research, Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Perak, Malaysia.
Biomass Processing Lab, Center for Biofuel and Biochemical Research, Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Perak, Malaysia.
出版信息
Bioresour Technol. 2016 Jul;211:248-56. doi: 10.1016/j.biortech.2016.03.105. Epub 2016 Mar 22.
Recently, a great attention has been paid to advanced microwave technology that can be used to markedly enhance the biodiesel production process. Ceiba pentandra Seed Oil containing high free fatty acids (FFA) was utilized as a non-edible feedstock for biodiesel production. Microwave-assisted esterification pretreatment was conducted to reduce the FFA content for promoting a high-quality product in the next step. At optimum condition, the conversion was achieved 94.43% using 2wt% of sulfuric acid as catalyst where as 20.83% conversion was attained without catalyst. The kinetics of this esterification reaction was also studied to determine the influence of factors on the rate of reaction and reaction mechanisms. The results indicated that microwave-assisted esterification was of endothermic second-order reaction with the activation energy of 53.717kJ/mol.
最近，人们对先进的微波技术给予了极大的关注，该技术可用于显著提高生物柴油的生产过程。 含有高游离脂肪酸（FFA）的吊灯树籽油被用作生物柴油生产的非食用原料。 进行了微波辅助酯化预处理，以降低 FFA 含量，从而在下一步生产出高质量的产品。 在最佳条件下，使用 2wt％硫酸作为催化剂时，转化率达到 94.43％，而没有催化剂时，转化率达到 20.83％。 还研究了该酯化反应的动力学，以确定因素对反应速率和反应机理的影响。 结果表明，微波辅助酯化是吸热的二级反应，其活化能为 53.717kJ/mol。
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