In order to obtain monomers from vegetable source, the castor oil epoxidation process was investigated. The catalytic system used in this work, H₂O₂/alumina/ethyl acetate, can be considered as a green system, free of heavy metals and toxic solvents. These characteristics make the system appropriate for the purpose of this study since they increase the probabilities of obtaining a biomaterial with the desired specifications regarding toxicity. Reaction conditions of castor oil epoxidation were optimized using methyl ricinoleate as a model compound. In order to identify the operating region, it was developed an experimental design 2³ with 17 assays (6 axial points and central point in triplicate) in which, methyl ricinoleate, hydrogen peroxide and catalyst initial quantities in the reaction mixture were the studied variables. The system showed great efficiency with 100% of selectivity in the methyl ricinoleate epoxide production. In optimized conditions, it showed conversion of 99% in 6 h. It was obtained a conversion of 94%, an epoxidation percentage of 84 and a selectivity of 89% toward the epoxides for the castor oil epoxidation. These results show the efficacy of the catalytic system used in this work. Epoxidized castor oil structure was confirmed by FTIR, Raman and ¹H NMR techniques.

为了从植物来源获得单体，对蓖麻油环氧化过程进行了研究。这项工作中使用的催化体系H ₂ O ₂ /氧化铝/乙酸乙酯可以认为是绿色体系，不含重金属和有毒溶剂。这些特性使该系统适合于本研究的目的，因为它们增加了获得具有所需毒性相关规格的生物材料的可能性。以蓖麻油酸甲酯为模型化合物，优化了蓖麻油环氧化反应条件。为了确定操作区域，我们对其进行了实验设计2 ³通过17种测定（6个轴向点和三个中心点，一式三份），其中蓖麻油酸甲酯，过氧化氢和反应混合物中的催化剂初始量为研究变量。该系统在蓖麻油酸甲酯环氧化物生产中具有100％的选择性，显示出很高的效率。在优化的条件下，它在6小时内显示出99％的转化率。获得了对于蓖麻油环氧化的94％的转化率，84的环氧化百分数和89％的对环氧化物的选择性。这些结果表明了在这项工作中使用的催化体系的功效。通过FTIR，拉曼和¹ H NMR技术证实了环氧化蓖麻油的结构。