This work investigated the potentiality of calcium oxide supported on coal fly ash (CaO/CFA) as a solid catalyst for biodiesel synthesis from Jatropha oil (JO). Synthesized CaO/CFA catalyst at various precursor salt concentrations was investigated and exhibited good activity for transesterification reaction when the 40% wt/vol. concentration of precursor salt solution was loaded on coal fly ash. The optimal CaO/CFA catalyst was characterized by various spectroscopic techniques. Taguchi design approach was utilized to find the optimum condition for the biodiesel production process. The biodiesel yield was mainly affected by catalyst amount, temperature, and methanol/JO molar ratio among the studied process variables. At the optimum catalyst amount of 0.5 wt.%, methanol/JO molar ratio of 12:1, temperature of 60 °C, and time of 1 h, the maximum predicted and observed biodiesel yields were 95.64% and 94.72%, respectively. The CaO/CFA catalyst exhibited sustained stability after being reused for up to three cycles.

这项工作研究了粉煤灰负载的氧化钙 (CaO/CFA) 作为从麻风树合成生物柴油的固体催化剂的潜力油 (JO)。研究了在不同前体盐浓度下合成的 CaO/CFA 催化剂，当 40% wt/vol. 浓缩的前体盐溶液负载在粉煤灰上。通过各种光谱技术表征了最佳的 CaO/CFA 催化剂。田口设计方法被用来寻找生物柴油生产过程的最佳条件。在研究的过程变量中，生物柴油产率主要受催化剂用量、温度和甲醇/JO 摩尔比的影响。在最佳催化剂量为 0.5 wt.%、甲醇/JO 摩尔比为 12:1、温度为 60 °C 和时间为 1 h 时，预测和观察到的最大生物柴油产率分别为 95.64% 和 94.72%。