化工进展2024，Vol.43Issue(z1)：374-381,8.DOI:10.16085/j.issn.1000-6613.2024-0836
脱铝分子筛固体酸催化葡萄糖制备5-羟甲基糠醛
Preparation of 5-hydroxymethylfurfural from glucose catalyzed by dealuminized molecular sieve solid acids
摘要
Abstract
HY molecular sieves were dealuminized with nitric acid of different concentrations.The dealuminized HY molecular sieves had different specific surface areas and pore sizes.The Sn-doped bifunctional catalyst for the conversion of glucose to 5-HMF was prepared by impregnation method using the dealuminized molecular sieve as the carrier.The catalysts were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),N2 adsorption/desorption,X-ray photoelectron spectroscopy(XPS)and acid-base titration.The results showed that the synthesized 0.5mol/L-10％Sn-HY had mesoporous structure,octahedral morphology and suitable B/L acid site ratio.In the reaction system of methyl isobutyl ketone(MIBK)and NaCl-H2O,the yield of 5-hydroxymethylfurfural was 67.3％under the optimized conditions of 0.2g catalyst,165℃ and 60min.After five cycles,the 5-HMF yield could still reach 49％,indicating that the catalyst had good stability.Meanwhile,the reaction mechanism for the conversion of glucose to 5-HMF was preliminarily investigated.Overall,this work established an efficient multiphase catalytic system that demonstrated the great potential of converting biomass into platform compounds.关键词
催化剂/分子筛/生物质/双相体系/5-羟甲基糠醛Key words
catalyst/molecular sieves/biomass/biphasic system/5-hydroxymethylfurfural分类
化学化工引用本文复制引用
何世坤,张荣花,李昊阳,潘晖,冯君锋..脱铝分子筛固体酸催化葡萄糖制备5-羟甲基糠醛[J].化工进展,2024,43(z1):374-381,8.基金项目
国家自然科学基金(32101469) （32101469）
广西林产化学与工程重点实验室(国家民委重点实验室)开放基金(GXFK2204) （国家民委重点实验室）
江苏省生物质能源与材料重点实验室自主科研项目(JSBEN-S-202202). （JSBEN-S-202202）
