Addition of SrO in combination with a hydration technique were used to modify eggshell-derived CaO catalysts for transesterification of Jatropha oil with methanol. A Box-Behnken design of experiment was employed to determine the optimal conditions. The results showed that the maximum methyl ester content of 99.71% could be achieved with the catalyst having 7 mmol/g of SrO at 65 °C, 89.8 min, MeOH:oil molar ratio of 27.6:1, and catalyst amount of 4.77 wt%. At these conditions, the catalyst remained active with methyl ester content of ca. 90% for several cycles and gradually deactivated due to the losses of active metals.

中文翻译：

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使用废鸡蛋壳中的CaO改性的SrO催化剂将麻疯树油酯交换为生物柴油

SrO的添加与水合技术的结合用于修饰蛋壳衍生的CaO催化剂，从而使麻风树油与甲醇进行酯交换反应。采用Box-Behnken实验设计确定最佳条件。结果表明，在65°C，89.8分钟，MeOH：油的摩尔比为27.6：1，催化剂量为4.77 wt％的条件下，具有7 mmol / g SrO的催化剂可实现最大甲酯含量为99.71％。 。在这些条件下，催化剂的活性保持不变，甲酯含量约为3。90％连续几个循环，并由于活性金属的损失而逐渐失活。