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Author Li, Gai yun ♦ Qin, Te fu
Source SpringerLink
Content type Text
Publisher Northeast Forestry University and Ecological Society of China
File Format PDF
Copyright Year ©2006
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Life sciences; biology
Subject Keyword Aqueous acetic acid ♦ Sulfuric acid ♦ Component separation ♦ Poplar wood ♦ Forestry
Abstract A study was conducted on the isolation of poplar (Populus × euramaricana (Dode) Guineir cv. l-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% H$_{2}$SO$_{4}$ in reaction solution, ratio of liquor to wood 6, reflux time 3 h, and 90% AcOH. The residues were mainly composed of α-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.
ISSN 1007662X
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2006-01-01
Publisher Place Harbin
e-ISSN 19930607
Journal Journal of Forestry Research
Volume Number 17
Issue Number 1
Page Count 3
Starting Page 62
Ending Page 64

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Source: SpringerLink