Physicochemical characteristics of polysaccharides from catalytic and noncatalytic acetic acid-peroxide delignification of larch wood

被引：5
|
作者：
Chudina, Anna, I [1 ]
Malyar, Yuriy N. [1 ,2 ]
Sudakova, Irina G. [1 ]
Kazachenko, Aleksandr S. [1 ,2 ]
Skripnikov, Andrey M. [1 ,2 ]
Borovkova, Valentina S. [1 ,2 ]
Kondrasenko, Alexander A. [1 ]
Mazurova, Elena, V [1 ]
Fetisova, Olga Yu [1 ]
Ivanov, Ivan P. [1 ]
机构：
[1] Russian Acad Sci, Inst Chem & Chem Technol, Krasnoyarsk Sci Ctr, Siberian Branch, Akademgorodok 50,Bld 24, Krasnoyarsk 660036, Russia
[2] Siberian Fed Univ, Pr Svobodny 79, Krasnoyarsk 660041, Russia
来源：
BIOMASS CONVERSION AND BIOREFINERY | 2023年 / 13卷 / 11期
关键词：
Wood polysaccharides; Delignification; Hydrogen peroxide; Larch wood; HOT-WATER EXTRACTION; HEMICELLULOSE; GALACTOGLUCOMANNAN; CELLULOSE; SOFTWOOD; MANNANS; OPTIMIZATION; PRETREATMENT; OXIDATION; CHEMICALS;
D O I：
10.1007/s13399-021-01833-y
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The composition and physicochemical characteristics of polysaccharides extracted from spent liquors of catalytic and noncatalytic delignification of larch wood in the acetic acid-hydrogen peroxide medium were studied. The following were used as catalysts: (NH4)(6)Mo7O24, MnSO4, TiO2, and ZnSO4. The structure of polysaccharides was identified by FTIR and NMR spectroscopy. Their composition was established using gas chromatography, and the physicochemical characteristics were studied using gel permeation chromatography, scanning electron microscopy, thermogravimetric analysis, gas adsorption, and elemental analysis. It was shown that in the process of oxidative delignification, a significant amount of hemicelluloses and arabinogalactan passes into the spent liquor. The yield of polysaccharides was up to 16.9 wt%. Polysaccharides had a weight-average molecular weight of up to 22.9 kDa and a narrow molecular weight distribution.
引用
收藏
页码：9765 / 9774
页数：10
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