Badday, Ali Sabri; Abdullah, Ahmad Zuhairi; Lee, Keat-Teong - In: Renewable Energy 62 (2014) C, pp. 10-17
Transesterification of crude Jatropha oil in presence of tungstophosphoric acid (TPA) supported on activated carbon (AC … transesterification of Jatropha oil with high free fatty acid content. The catalyst with 20% TPA loading achieved the best methyl ester …