Upgrading Bio-Fuel from Jatropha Oil via Onepot Transesterification-Isomerisation Using Solid Acid CatalystsWahyu Narulita Dewi, Hitomi Murayama, Anisa Mutamima and Indra PurnamaE3S Web Conf., 593 (2024) 09001DOI: https://doi.org/10.1051/e3sconf/202459309001