采用溶剂提取法从玉米秸秆中提取木质素，以其为原料经碳化-活化制备木质素基固体活性炭，然后再经硫酸磺化合成木质素碳基固体酸（KLCS），并用于催化果糖制备5-羟甲基糠醛（5-HMF）。利用傅里叶变换红外仪、X-射线光电子能谱仪和元素分析仪等对KLCS进行表征与分析，结果表明，—SO₃H基团已经成功连接到该固体酸表面。以该固体酸为催化剂，在二甲基亚砜（DMSO）和水（体积比为6∶1）组成的双相溶剂体系中190℃下反应10 min，5-HMF的产率达到91.7%，果糖转化率为100%。该催化剂经5次循环使用后，5-HMF产率仍能保持在81%以上，表明其具有优良的回收使用性能。

Lignin extracted from corn stover via solvent extraction method is used as a raw material to prepare lignin-based solid activated carbon through carbonization and activation processes.Then the lignin-based solid activated carbon is synthesized into lignin carbon-based solid acid (KLCS) through sulfonation in sulfuric acid, which is applied for catalytic production of 5-hydroxymethylfurfural (5-HMF) from fructose.KLCS catalyst is characterized by means of Fourier transform infrared, X-ray photoelectron spectroscopy and elemental analysis.The results show that the -SO₃H group has been successfully connected onto the solid acid surface.The yield of 5-HMF and the conversion of fructose achieve 91.7% and 100%, respectively when the reaction has been catalyzed by KLCS catalyst in DMSO/H₂O biphasic solvent (volume ratio 6:1) at 190℃ for 10 min.After KLCS catalyst has been served for 5 cycles, the yield of 5-HMF still keeps above 81%, indicating an excellent recovery performance.

孙鹏丽(1997-),女,硕士生,研究方向为生物质催化转化,534070832@qq.com