现代食品科技2017，Vol.33Issue(5)：155-160,57,7.DOI:10.13982/j.mfst.1673-9078.2017.5.025
重结晶法制备多级孔Sn-Beta分子筛用于催化葡萄糖异构化为果糖
Catalytic Isomerization of Glucose to Fructose Using a Hierarchical Sn-Beta Molecular Sieve Prepared by Recrystallization
摘要
Abstract
With an aluminum-free beta molecular sieve as the silicon source and tin (ⅣV) chloride pentahydrate as the tin source,a microporous and mesoporous hierarchical Sn-Beta zeolite catalyst was prepared by two-step hydrothermal recrystallization under the action of a mesoporous template agent,cetyltrimethylammonium bromide (CTAB).The hierarchical Sn-Beta molecular sieve was then used in the isomerization of glucose to fructose.The properties of the sieve were characterized by Fourier transform infrared spectroscopy (FT-IR),X-ray diffiaction (XRD),scanning electron microscopy (SEM),transmission electron microscopy (TEM),inductively coupled plasma atomic emission spectroscopy (ICP-AES),and nitrogen adsorption-desorption isotherm.The effects of reaction temperature,reaction time,amount of catalyst,and molar ratio of silicon/tin on glucose conversion and fructose yield were investigated,and the reusability and regeneration of the novel catalyst were also studied.The results showed that the hierarchical Sn-Beta molecular sieve had not only the typical framework structure of BEA-type micropore molecular sieves,but also the mesopore structure.In the catalytic isomerization of glucose,the yield of fructose could reach 47.20％ when the reaction temperature was 120 ℃,the reaction time was two hours,the molar ratio of silicon oxide/tin oxide was 100,and 4 g of catalyst and 40 mL glucose (10 wt％) were used.Additionally,the catalyst exhibited a good regenerative property and reusability.关键词
多级孔Sn-Beta/葡萄糖异构化/果糖Key words
hierarchical Sn-Beta/glucose isomerization/fructose引用本文复制引用
周彦斌,庄军平,王兰英,余开荣,武书彬..重结晶法制备多级孔Sn-Beta分子筛用于催化葡萄糖异构化为果糖[J].现代食品科技,2017,33(5):155-160,57,7.基金项目
广州市科技计划项目(201607020025) （201607020025）
制浆造纸工程国家重点实验室自主研究课题(2016C16) （2016C16）
