文章基本信息

标题：Kinetics and Mechanism of the Uncatalyzed Esterification of Acid-Rich Oil with Glycerol
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作者：Ke Li ; Jie Chen ; Xiaoan Nie 等
期刊名称：Open Journal of Applied Sciences
印刷版ISSN：2165-3917
电子版ISSN：2165-3925
出版年度：2022
卷号：12
期号：1
页码：1-9
DOI：10.4236/ojapps.2022.121001
语种：English
出版社：Scientific Research Publishing
摘要：In this paper, non-catalytic high temperature deacidification process of glycerol rich in acid oil was studied. Through orthogonal experiment, the primary and secondary order of influencing factors was temperature, glycerol dosage and reaction time, and the optimal process conditions were further verified: The ratio of fatty acid to glycerol is 1:1.2, the reaction temperature is 240°C, and the acid value can be reduced to 1.66 mg KOH/g for 2 h. In addition, the activation energy of the reaction was 54.93 kJ/mol by kinetic study. Combined with the K1 value of each reaction, it was confirmed that the temperature rise was conducive to the progress of the reaction. Finally, the high temperature ionization theory of glycerol is put forward, and the mechanism of auto-catalyzed deacidification reaction of glycerol is deduced by using this theory. This theory not only explains this study, but also perfectly explains the slow reaction time of low glycerol dosage.
关键词：OilFatty AcidEsterificationKineticsReaction Mechanism