Cost-effective bifunctional lignin-derived carbon supported tin oxide with efficient production of 5-hydroxymethylfurfural from glucose  

作　　者：Sien Yan Linhuo Gan Kui Wang Kang Sun 

机构地区：[1]College of Chemical Engineering,Huaqiao University,Xiamen 361021,China [2]Key Laboratory of Biomass Energy and Materials of Jiangsu Province,Nanjing 210042,China [3]Institute of Chemical Industry of Forest Products,Chinese Academy of Forestry,Nanjing 210042,China [4]Fujian Provincial Key Laboratory of Biomass Low-Carbon Conversion,Huaqiao University,Xiamen 361021,China

出　　处：《Chinese Journal of Chemical Engineering》2024年第10期154-164,共11页中国化学工程学报（英文版）

基　　金：supported by the independent research major project of Key Laboratory of Biomass Energy and Materials of Jiangsu Province, China (JSBEM-S-202202);the key project of Science and Technology Plan of Nanping, China (N2022B002);the Open Research Fund of Academy of Advanced Carbon Conversion Technology, Huaqiao University, China

摘　　要：5-Hydroxymethylfurfural(5-HMF)is one of the important bio-based platform compounds,and the catalytic conversion of glucose to 5-HMF is a highly desirable approach that is receiving increasing attention.Herein,we reported the synthesis of lignin-derived carbon supported tin oxides(SnOx/LC)catalyst via a two-step hydrothermal-pyrolytic method using wheat straw alkali lignin as a cost-effective carbon source with high carbon content.The key preparation conditions of the catalyst and its catalytic conditions for the conversion of glucose to 5-HMF were investigated,respectively.Results show that under the preparation conditions of tin tetrachloride dosage of 3.0 mmol and pyrolysis temperature of 500 ℃,the optimized catalyst(3.0-SnOx/LC-500)with a high yield of 63.4%exhibits good catalytic performance of 5-HMF yield of 50.1%and reaction selectivity of 86.0%under the optimum conditions of reaction temperature and time of 190 ℃ and 3 h,initial glucose concentration of 10%(mass),3.0-SnOx/LC-500 dosage of 100 mg in a biphasic solvent system of volume ratio of water to tetrahydrofuran of 1:4.In addition,3.0-SnOx/LC-500 exerts an excellent reusability in a five-cycle experiment.Furthermore,SnOx/LC was characterized in detail using X-ray diffraction patterns(XRD),X-ray photoelectron spectroscopy(XPS),Brunauer-Emmett-Teller(BET),ammonia temperature-programmed-desorption(NH3-TPD),pyridine adsorption infrared spectroscopy(Py-FTIR),scanning electron microscope(SEM)and thermal gravimetric analysis(TGA).Results indicate that Brønsted acid sites and Lewis acid sites coexist on 3.0-SnOx/LC-500,and more Sn^(4+),as well as a proper ratio of weak acidity to medium acidity,are conductive to its catalytic performance in glucose-to-5-HMF reaction.

关 键 词：LIGNIN Biomass Catalyst support SELECTIVITY Biphasic solvent system 

分 类 号：TQ251[化学工程—有机化工]