Sugarcane bagasse (SCB) generated in the commercial sector would need to have means to convert the low-cost material into a high-value product(s). One possible high-value product is a solid acid catalyst (SAC) derived from SCB for possible applications in biodiesel production. In this study, a new approach and concept to simultaneously carbonize and sulfonate SCB under less severe conditions, while also recovering available sugars in SCB in the form of sugar-rich hydrolysates were explored. The approach involved a 2-h dilute acid hydrolysis (DAH) step with dilute H₂SO₄ (4 wt%) at 100 °C, as pre-treatment to recover about 73% of the available sugars in the hydrolysate. The post-hydrolysis SCB (PHSCB) left after the DAH along with the residual acids were then subjected to drying at 100–150 °C for 12–36 h, to induce simultaneous partial carbonization and sulfonation. The process was successfully carried out and enables the synthesis of carbonized and functionalized PHSCB. The catalyst was successfully used in the esterification of oleic acid and methanol while achieving a conversion of up to 95%. Other process parameters including the influence of solvent-to-oil ratio, catalyst loading, temperature, as well as reusability of the synthesized catalyst were also investigated.

商业部门产生的甘蔗渣 (SCB) 需要有办法将低成本材料转化为高价值产品。一种可能的高价值产品是源自 SCB 的固体酸催化剂 (SAC)，可能应用于生物柴油生产。在这项研究中，探索了一种新的方法和概念，可以在不太苛刻的条件下同时碳化和磺化 SCB，同时还以富含糖的水解产物的形式回收 SCB 中的可用糖。_{该方法涉及使用稀 H 2} SO ₄进行 2 小时稀酸水解 (DAH) 步骤(4 wt%) 在 100 °C 下，作为预处理回收水解产物中约 73% 的可用糖。在 DAH 之后留下的水解后 SCB (PHSCB) 与残留的酸一起在 100-150°C 下干燥 12-36 小时，以同时诱导部分碳化和磺化。该过程成功进行，并能够合成碳化和功能化的 PHSCB。该催化剂成功用于油酸和甲醇的酯化反应，转化率高达 95%。还研究了其他工艺参数，包括溶剂油比、催化剂负载量、温度以及合成催化剂的可重复使用性的影响。