中国造纸学报2024，Vol.39Issue(1)：123-129,7.DOI:10.11981/j.issn.1000-6842.2024.01.123
玉米秸秆乙醇低聚糖纯化及热稳定性研究
Study on Purification and Thermal Stability of Ethanol Oligosaccharides from Corn Stover
摘要
Abstract
In this study,ethanol oligosaccharides extracted from the waste liquid of corn stover ethanol pulping as raw materials were purified by resins,and fractionated to obtain the components with molecular weight of 200～1000 D.By testing the thermal stability of oligosaccha-rides at different heating rates and calculating by nonlinear fitting,the pyrolysis activation energy(E)and pre-exponential factors(lnA)of oligosaccharides were obtained.The results showed that the decomposition temperature range of purified and fractionated oligosaccharides was 160～300 ℃ under non-isothermal procedures,and the thermal stability of oligosaccharides decreased when the ash content increased.The E values of unpurificated oligosaccharides O0,desalinated oligosaccharides B0,decolorized oligosaccharides C0 and desalinated and de-colorized oligosaccharides D0 after fractionation were 46.52,60.55,43.12 and 52.28 kJ/mol,respectively,and the pre-exponential factors(InA)were 4.03,7.70,2.98 and 5.47 min-1,respectively.This study and results could provide reference for the purification and the selec-tion of technological parameters.关键词
秸秆低聚糖/乙醇法制浆/热稳定性/低聚糖纯化Key words
corn stover oligosaccharides/ethanol pulping/thermal stability/oligosaccharide purification分类
轻工纺织引用本文复制引用
申秋,平清伟,张健,盛雪茹,李娜..玉米秸秆乙醇低聚糖纯化及热稳定性研究[J].中国造纸学报,2024,39(1):123-129,7.基金项目
兴辽英才计划科技创新领军人才(XLYC1802025). （XLYC1802025）
