Abstract Biodiesel is a renewable energy source. However, high production cost, low product efficiency, and long reaction time have been the main technical challenges in biodiesel synthesis. Recently, various types of heterogeneous catalyst and continuous reactor have been invented for the production of biodiesel. But most of the catalysts are not suitable for large-scale industrial application for biodiesel synthesis due to high cost. Therefore, there is a need for exploring more suitable and economical heterogeneous catalyst. From literature, CaO derived catalyst from waste sources found to be the best heterogeneous catalyst for low-cost biodiesel synthesis. In continuous reactors, good mixing of reactants for mass transfer resistant is the primary requirement for good yield of biodiesel. Therefore, reverse flow helical coil reactor is found to be the good solution to overcome these problems which provide a good yield of biodiesel. Depending upon the type of catalysts and reactors used in this process, the reaction rate, energy consumption, molar ratio of methanol to oil and raw material will vary. Therefore, there is a need for a right combination of reactor and catalyst for getting higher biodiesel yield.

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可持续多相催化剂和用于生物柴油生产的突出连续反应器的最新进展概述

摘要 生物柴油是一种可再生能源。然而，生产成本高、产品效率低、反应时间长一直是生物柴油合成的主要技术挑战。最近，已经发明了各种类型的多相催化剂和连续反应器来生产生物柴油。但由于成本高，大多数催化剂不适合生物柴油合成的大规模工业应用。因此，需要探索更合适、更经济的多相催化剂。从文献中可以看出，来自废物来源的 CaO 衍生催化剂是低成本生物柴油合成的最佳多相催化剂。在连续反应器中，反应物的良好混合以抵抗传质是生物柴油高产率的主要要求。所以，发现逆流螺旋盘管反应器是克服这些问题的良好解决方案，可提供良好的生物柴油产量。根据该过程中使用的催化剂和反应器的类型，反应速率、能耗、甲醇与油的摩尔比和原材料会有所不同。因此，需要反应器和催化剂的正确组合以获得更高的生物柴油产量。