Recyclable Catalyst of ZnO/SiO2 Prepared from Salacca Leaves Ash for Sustainable Biodiesel Conversion

by Fatimah I.; Purwiandono G.; Sahroni I.; Sagadevan S.; Chun-Oh W.; Ghazali S.A.I.S.M.; Doong R.-A.
Published in South African Journal of Chemical Engineering (2022)