This work reports on the esterification of fatty acids with ethanol using Amberlyst-15 in a scCO₂-assisted system. A factorial design was carried out for the following process variables: temperature (70 °C–110 °C), ethanol to acid molar ratio (3:1 to 9:1) and catalyst to acid concentration (5–20 wt%), with a fixed amount of CO₂ added to the reactor (28.62 g). The best reaction condition led to an 87 % conversion at 110 °C, 9:1, and 20 wt% in 15 min of reaction time. An exploratory kinetic study illustrates the effect of catalyst amount and molar ratio in isothermal kinetic curves. Also, a catalyst reuse study was performed. Additionally, different carboxylic acids and methanol, instead of ethanol, were evaluated as reagents. At all proposed systems, the addition of scCO₂ increased the reaction conversion.

这项工作报道了在scCO ₂辅助系统中使用Amberlyst-15将脂肪酸与乙醇进行酯化反应。针对以下过程变量进行了析因设计：温度（70°C–110°C），乙醇与酸的摩尔比（3：1至9：1）和催化剂与酸的浓度（5-20​​ wt％），将固定量的CO ₂添加到反应器中（28.62 g）。最佳的反应条件可在15分钟的反应时间内在110°C，9：1和20 wt％的条件下实现87％的转化率。探索性动力学研究说明了催化剂量和摩尔比对等温动力学曲线的影响。另外，进行了催化剂再利用研究。另外，评价了不同的羧酸和甲醇而不是乙醇作为试剂。在所有提议的系统中，都添加了scCO ₂ 提高了反应转化率。