Functionalized metal-organic frameworks with strong acidity and hydrophobicity as an efficient catalyst for the production of 5-hydroxymethylfurfural  

作　　者：Huan Li Yao Zhong Luxi Wang Qiang Deng Jun Wang Zheling Zeng Xinxiang Cao Shuguang Deng 

机构地区：[1]Key Laboratory of Poyang Lake Environment and Resource Utilization(Nanchang University)of the Ministry of Education,School of Resource,Environmental and Chemical,Engineering,Nanchang University,Nanchang 330031,China [2]Laboratory for Development&Application of Cold Plasma Technology,College of Chemistry and Chemical Engineering,Luoyang Normal University,Luoyang 471022,China [3]School for Engineering of Matter,Transport and Energy,Arizona State University,551 E.Tyler Mall,Tempe,AZ 85287,United States

出　　处：《Chinese Journal of Chemical Engineering》2021年第5期167-174,共8页中国化学工程学报（英文版）

基　　金：The authors appreciate support from the National Natural Science Foundation of China(21878138,21706112);the Postdoctoral Science Foundation of China(2017M622104,2018T110660);the Key Scientific and Technological Project of Henan Province(182102410072);the start-up funds from Nanchang University and Arizona State University.

摘　　要：In the dehydration of fructose to 5-hydroxymethyl furfural(HMF),in situ produced water weakens the acid strength of the catalyst and causes the rehydration of HMF,causing unsatisfactory catalytic activity and selectivity.In this work,a class of benzenesulfonic acid-grafted metal-organic frameworks with strong acidity and hydrophobicity is obtained by the direct sulfonation method using 4-chlorobenzenesulfonic acid as sulfonating agent.The resultant MOFs have a specific surface area of greater than 250 m^(2)·g^(-1),acid density above 1.0 mmol·g^(-1),and water contact angle up to 129°.The hydrophobic MOF-PhSO_(3)H exhibits both higher catalytic activity and selectivity than MOF-SO_(3)H in the HMF synthesis due to its better hydrophobicity and olephilicity.Moreover,the catalyst has a high recycled stability.At last,fructose is completely converted,and 98.0%yield of HMF is obtained under 120℃ in a DMSO solvent system.The successful preparation of the hydrophobic acidic MOF provides a novel hydrophobic catalyst for the synthesis of HMF.

关 键 词：CATALYSIS Catalyst Biomass METAL-ORGANIC framework FRUCTOSE 5-HYDROXYMETHYLFURFURAL 

分 类 号：TQ251.11[化学工程—有机化工] TQ426