木质素基固体酸催化剂的制备及催化果糖产5-HMF的研究  

Preparation of lignin-derived solid acid catalyst and its uses in catalytic conversion of fructose to 5-HMF

作　　者：孙鹏丽 张鸿伟 陶潇然 陶昱恒 王利群[1] 张跃[1] 卿青[1] SUN Peng-li;ZHANG Hong-wei;TAO Xiao-ran;TAO Yu-heng;WANG Li-qun;ZHANG Yue;QING Qing(School of Biological and Food Engineering,Changzhou University,Changzhou 213164,China)

机构地区：[1]常州大学生物与食品工程学院,江苏常州213164

出　　处：《现代化工》2023年第11期134-139,共6页Modern Chemical Industry

基　　金：2022年江苏省青蓝工程项目(SCZ2210200010)。

摘　　要：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-SO_(3)H 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/H_(2)O 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.

关 键 词：木质素 碳基固体酸 果糖 5-羟甲基糠醛 磺酸基团 

分 类 号：TQ251.11[化学工程—有机化工]