CHEMICALLY-BASED HETEROGENEOUS ACIDIC CATALYSTS FOR BIODIESEL PRODUCTION: A REVIEW
Journal: Acta Chemica Malaysia (ACMY)
Author: Abdelmalik M. Shakorfow and Elham M. Daribi
This is an open access journal distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
Unless appropriately catalyzed, a transesterification reaction with/out esterification reaction cannot proceed towards the production of biodiesel. It is observed that chemically-based heterogeneous acidic catalysts for biodiesel production are several and gaining an attention due to their good catalytic activity, stability and reuse. Furthermore, among investigations reviewed, it has been found that such catalysts have been found to be tolerant with a high level of free fatty acids contained in the used oil as a feedstock for which an esterification reaction is required. On the other hand; however, chemically-based heterogeneous acidic catalysts usually require harsh reaction conditions and are associated with law mass transfer rates.