硫酸铁协同离子液体催化果糖选择性制备5-羟甲基糠醛的作用机制研究  

Selective Production of 5-Hydroxymethylfurfural from Fructose Catalyzed by Ferric Sulfate with Ionic Liquid Additive and Its Mechanism

作　　者：宋向波 范书怡 陈凯思 熊婉婷 郭正熙 解增 SONG Xiangbo;FAN Shuyi;CHEN Kaisi;XIONG Wanting;GUO Zhengxi;XIE Zeng(School of Physics and Electronic Science,Chuxiong Normal University,Chuxiong,Yunnan Province 675000;Chinese Academy of Sciences,Guangzhou Institute of Energy Resources,Guangzhou,Guangdong Province 510640)

机构地区：[1]楚雄师范学院物理与电子科学学院,云南楚雄675000 [2]中国科学院广州能源研究所,广东广州510640

出　　处：《楚雄师范学院学报》2023年第3期9-16,共8页Journal of Chuxiong Normal University

基　　金：云南省地方本科高校基础研究联合项目(No.202101BA070001-190);2022年国家级大学生创新创业训练计划项目(No.202211391015);云南省教育厅科学研究基金项目(No.2022J0837);楚雄师范学院博士科研启动项目(No.BSQD2109)。

摘　　要：5-羟甲基糠醛(HMF)是一种用途范围较广的高值平台化合物。以可再生的生物质基糖类为原料选择性制备HMF对生物质资源的综合开发与利用具有重要意义。本文以生物质基果糖为原料,采用廉价无毒的硫酸铁协同1-丁基-3甲基咪唑氯盐离子液体([Bmim]Cl)作为催化剂体系用于催化果糖选择性制备HMF。通过对反应工艺参数进行详细的考察,探究了硫酸铁与[Bmim]Cl的协同催化性能。结果表明:当反应温度维持140oC并反应1.5 h时,在纯水体系中HMF的最大收率接近55%;在水-THF混合体系中可提高至63%。此外,通过溶剂效应实验对硫酸铁催化果糖转化的作用机制进行了探究,提出了硫酸铁在水的作用下发生水解并释放活性物质H+催化果糖转化的作用机制。5-Hydroxymethylfurfural(HMF) is a high value platform compound with a wide range of applications.Selective production of HMF from renewable biomass-based sugars is of great significance for comprehensive development and utilization of biomass resources.In this paper,the bio-based fructose is used as raw material,and the cheap and non-toxic ferric sulfate combined with 1-butyl-3-methylimidazole chloride ionic liquid([Bmim]Cl) is used as catalyst system to catalyze selective conversion of fructose to HMF.The synergistic catalytic performance of ferric sulfate and [Bmim]Cl is investigated through the detailed investigation of reaction process parameters.Results show that when the reaction temperature is maintained at 140oC for 1.5 h,the maximum yield of HMF from fructose in pure water system is close to 55%,while it can be increased to63% in the water-THF miscible system.In addition,the mechanism of fructose conversion catalyzed by ferric sulfate is explored through solvent effect experiment.The mechanism of hydrolysis of ferric sulfate in the presence of water followed by releasing the H+species to catalyze fructose conversion is proposed.

关 键 词：生物质 5-羟甲基糠醛 离子液体 硫酸铁 选择性 

分 类 号：O645.13[理学—物理化学]