Тип публикации: статья из журнала

Год издания: 2021

Идентификатор DOI: 10.1007/s13399-021-01833-y

Ключевые слова: delignification, hydrogen peroxide, larch wood, wood polysaccharides

Аннотация: 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)₆Mo₇O₂₄, 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. Graphical abstract: [Figure not available: see fulltext.]

Журнал: Biomass Conversion and Biorefinery

ISSN журнала: 21906815

Место издания: Берлин

• Chudina A.I. (Institute of Chemistry and Chemical Technology,Krasnoyarsk Science Center,Siberian Branch,Russian Academy of Sciences)
• Malyar Y.N. (Siberian Federal University)
• Sudakova I.G. (Institute of Chemistry and Chemical Technology,Krasnoyarsk Science Center,Siberian Branch,Russian Academy of Sciences)
• Kazachenko A.S. (Siberian Federal University)
• Skripnikov A.M. (Siberian Federal University)
• Borovkova V.S. (Siberian Federal University)
• Kondrasenko A.A. (Institute of Chemistry and Chemical Technology,Krasnoyarsk Science Center,Siberian Branch,Russian Academy of Sciences)
• Mazurova E.V. (Institute of Chemistry and Chemical Technology,Krasnoyarsk Science Center,Siberian Branch,Russian Academy of Sciences)
• Fetisova O.Y. (Institute of Chemistry and Chemical Technology,Krasnoyarsk Science Center,Siberian Branch,Russian Academy of Sciences)
• Ivanov I.P. (Institute of Chemistry and Chemical Technology,Krasnoyarsk Science Center,Siberian Branch,Russian Academy of Sciences)

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