Isolation and characterization of wood components with aqueous acetic acid
Isolation and characterization of wood components with aqueous acetic acid作者机构：Research Institute of Wood Industry Chinese Academy of Forestry Beijing 100091 P. R. China
出 版 物：《Journal of Forestry Research》 (林业研究（英文版）)
年 卷 期：2006年第17卷第1期
页 面：62-64页
核心收录：
学科分类：082902[工学-木材科学与技术] 08[工学] 0829[工学-林业工程]
基 金：TheresearchwassupportedbyOpenResearchFoundationofKeyLabofWoodScienceandTechnology(StateForestryAdministration P.R.China)(CRIWI0403)
主 题：Aqueous acetic acid Sulfuric acid Component separation Poplar wood
摘 要：A study was conducted on the isolation of poplar （Populusxeurarnaricana （Dode） Guineir cv. I -72/58） wood components with aqueous acetic acid （AcOH） containing small amounts of sulfuric acid. The reaction time, concentration of acetic acid, ratio of liquor to wood, and concentration of acid catalyst were investigated to examine their effects on the fractionation of wood components. The three main separated components were characterized. The results showed that the optimum conditions for fractionation of poplar wood components were： 0.3% H2SO4 in reaction solution, ratio of liquor to wood 6, reflux time 3 h, and 90% AcOH. The residues were mainly composed of a-Cellulose and hemicellulose, The water insoluble precipitate （acetic acid lignin, AcL） had a low weight-average molecular weight range from 341 to 253 （Mw） and a narrow molecular weight distribution from 1.1 to 1.2. The sugar analysis revealed the solubilized products resulted mainly from hemicellulose and exited as monosaccharides.
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