Epoxidized soybean oil was produced in this study by in situ generated peroxycitric with citric acid and hydrogen peroxide. Different production techniques were applied, namely conventional heating epoxidation and microwave-assisted epoxidation, using the Prileschajew method. Three different processes were studied in the conventional heating process: homogeneous catalysis with sulfuric acid, heterogeneous catalysis with Amberlite IR-120, and a process with no catalyst. Compared to acetic acid, citric acid is less toxic, safer for the epoxidation process, and does not require a strong acid catalyst for the reaction to occur, although oxirane oxygen content is higher when acetic acid is used as the oxygen carrier. Thermal runaway risks can be reduced by replacing acetic acid with citric acid since the latter is less volatile and more susceptible to steric hindrance. Citric acid is more acid than acetic acid, evidenced by a lower pKa, and then tends to favor ring-opening reactions once the epoxy group is produced. In the microwave heating process, epoxidation using both acetic acid and citric acid was studied. Microwave-assisted epoxidation allowed a decrease in reaction time from 2 h to 15 min when citric acid epoxidation was performed with similar resulting oxirane oxygen contents. In epoxidation with acetic acid, time was reduced from 2.3 h to 10 min in homogeneous catalysis with sulfuric acid and from 5 h to 25 min in heterogeneous catalysis with Amberlite IR-120.

在这项研究中，通过用柠檬酸和过氧化氢原位生成过氧化柠檬酸来生产环氧大豆油。应用了不同的生产技术，即使用Prileschajew方法的常规加热环氧化和微波辅助环氧化。在常规加热过程中研究了三种不同的过程：硫酸的均相催化，Amberlite IR-120的非均相催化和无催化剂的过程。与乙酸相比，柠檬酸的毒性较小，对于环氧化过程更安全，并且不需要强酸催化剂即可进行反应，尽管使用乙酸作为氧气载体时环氧乙烷的氧含量较高。用柠檬酸代替乙酸可以降低热失控的风险，因为柠檬酸的挥发性较小，更容易受到空间位阻的影响。柠檬酸比乙酸更酸，这表明较低的pK a，一旦形成环氧基，则倾向于促进开环反应。在微波加热过程中，研究了同时使用乙酸和柠檬酸的环氧化。当以相似的环氧乙烷氧含量进行柠檬酸环氧化时，微波辅助环氧化使反应时间从2小时减少到15分钟。在乙酸的环氧化中，用硫酸进行均相催化的时间从2.3 h减少到10分钟，而使用Amberlite IR-120进行的非均相催化的时间则从5 h减少到25 min。