Four types of high-acidity carbon-based solid acid catalysts (CBSCs) were successfully synthesized from wood sawdust, sugarcane bagasse, coconut shell, and wood sawdust-derived lignin using fuming sulfuric acid (FSA) as the sulfonating agent. The synthesized CBSCs were successfully applied to the conversion of wood sawdust-derived glucose and fructose into levulinic acid. The findings show that FSA can provide the CBSCs with higher acidity (8.0–13.0 mmol/g) than conventional concentrated sulfuric acid. Under the suitable conditions established in this work, levulinic acid was formed with a yield of more than 50 wt% over glucose when using the synthesized CBSCs at a dosage of 30 wt% over the amount of sugar.

以木屑、甘蔗渣、椰子壳和木屑木质素为原料，以发烟硫酸（FSA）为磺化剂，成功合成了四种高酸度碳基固体酸催化剂（CBSC）。合成的 CBSC 成功应用于将木屑中的葡萄糖和果糖转化为乙酰丙酸。研究结果表明，FSA 可以为 CBSC 提供比传统浓硫酸更高的酸度（8.0–13.0 mmol/g）。在本工作建立的合适条件下，当使用合成的CBSC，其剂量为糖量的30 wt%时，乙酰丙酸的产率比葡萄糖高50 wt%。