“Preparation of bio-char from Acacia Sawdust and Sugarcane bagasse for Solid acid Catalyst Fabrication”, Vietnam j. catal. adsorp., vol. 7, no. 2, pp. 98–104, Jul. 2018, Accessed: Feb. 28, 2025. [Online]. Available: https://jca.edu.vn/index.php/jca/article/view/645