生物质化学工程2016，Vol.50Issue(6)：23-31,9.DOI:10.3969/j.issn.1673-5854.2016.06.004
固体酸催化淀粉一锅法制备果葡糖浆的研究
One-pot P reparation of High Fructose Syrup Directly from Starch over Solid Acid Catalyst
摘要
Abstract
The catalytic effects of several supported solid acid catalysts on the direct conversion of starch into high fructose syrup ( HFS) in water were studied. Among them, the SO2-4 /USY solid catalyst, which was prepared by loading sulfuric acid on ultrastable Y zeolite (USY),possessed bifunctional activities for both hydrolysis of starch and isomerization of glucose.It made one-step preparation of HFS from starch into reality and had a good catalytic effect.The preparation conditions of SO2-4 /USY were optimized.The optimal conditions were 1.5 mol/L H2SO4 and 550℃.An optimized HFS yield(86.18%),containing 58.34%glucose and 27.84% fructose(mass fraction),was obtained under the conditions of 5% starch(starch/water),30% catalyst (based on the mass of starch),150℃,1h and 400r/min on the catalyst of optimal SO2-4 /USY.The USY catalyst had high specific surface area and porosity characterized by physical adsorption technique.This enabled the sulfuric acid to be effectively adsorbed on the USY surface by impregnation and calcination.Meanwhile,the catalysts were characterized by NH3 temperature programmed desorption and elemental analysis to find that the decrease of catalytic activity resulted from carbon deposition on the catalysts and the loss of SO2-4 .Therefore, the catalytic activity of SO2-4 /USY could be effectively recovered by calcining (removal carbon on the surface of catalyst) and impregnating in sulfuric acid ( increase SO2-4 ) .关键词
淀粉/果葡糖浆/固体酸/SO2-4 /USY/水解/异构Key words
starch/high fructose syrup/solid acid/SO2-4 /USY/hydrolysis/isomerization分类
化学化工引用本文复制引用
陈晖晖,蒋叶涛,孙勇,林鹿..固体酸催化淀粉一锅法制备果葡糖浆的研究[J].生物质化学工程,2016,50(6):23-31,9.基金项目
福建省自然科学基金(2016J01077)；厦门大学校长基金(20720160087) （2016J01077）
