1. Optimization of a two-stage process for biodiesel production from shea butter using response surface methodology;Ajala;Egypt. J. Pet.,2017
2. Synthesis of solid catalyst from natural calcite for biodiesel production: a case study of palm kernel oil in an optimization study using definitive screening design;Ajala;Biofuels,2018
3. Calcium-carbide residue: a precursor for the synthesis of CaO–Al2O3–SiO2–CaSO4 solid acid catalyst for biodiesel production using waste lard;Ajala;Chem. Eng. J. Adv.,2020
4. Nano-synthesis of solid acid catalysts from waste-iron-filling for biodiesel production using high free fatty acid waste cooking oil;Ajala;Sci. Rep.,2020
5. Thermal modification of chicken eggshell as heterogeneous catalyst for palm kernel biodiesel production in an optimization process;Ajala;Biomass Convers. Biorefinery,2020