Efficient conversion of chitin to HMF under the cocatalytic system of formic acid and silicotungstic acid  

作　　者：Luxiao ZHOU Kun GAO Peng HE Huahua YU Ronge XING Song LIU Yukun QIN 

机构地区：[1]College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 266042,China [2]CAS and Shandong Province Key Laboratory of Experimental Marine Biology,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China [3]Laboratory for Marine Drugs and Bioproducts,Qingdao Marine Science and Technology Center,Qingdao 266237,China

出　　处：《Journal of Oceanology and Limnology》2025年第1期261-273,共13页海洋湖沼学报(英文)

基　　金：Supported by the National Natural Science Foundation of China(No.42076126);the Shandong Key R&D Plan;Major Scientific and Technological Innovation Project(No.2022CXGC020413);the Natural Science Foundation of Shandong Province(Nos.ZR2020MD072,ZR2021QD014);the Liaoning Provincial Natural Science Foundation:Joint Open Fund of the State Key Laboratory for the Creation and Development of New Pesticides(No.2022-KF-25-03)。

摘　　要：The conversion process of chitin,one of the abundant biomass resources on the earth,not only follows the principles of green chemistry,but also has significant value in industrial applications.However,it is a great challenge to directly convert insoluble and rigid structured chitin to 5-hydroxymethylfurfural(HMF).To address this issue,we developed a green conversion process combining pretreatment and catalytic system.Chitin was first pretreated by hexafluoro isopropanol(HFIP),which somewhat disrupted the hydrogen bonding network within the chitin structure.Subsequently,formic acid(FA)and silicotungstic acid(STA)synergistically catalyzed the conversion to HMF in a biphasic system of 2-methyltetrahydrofuran(2-Me-THF)/H2O,and high yields(40.2%)HMF was obtained under the optimism conditions.The product distribution was analyzed by HPLC-MS and the co-catalysis of FA with STA was evidenced.A dual-function catalytic system with both Lewis and Br?nsted acids was created,the catalytic system that significantly improved the efficiency of complex tandem catalytic reactions with chitin.Based on the experimental results,a possible pathway for chitin conversion was deduced,providing a new catalytic idea for the efficient conversion of chitin to HMF.

关 键 词：CHITIN 5-HYDROXYMETHYLFURFURAL 2-Me-THF/H2O biphasic system Lewis and Br?nsted acid 

分 类 号：TQ251.11[化学工程—有机化工] TQ426