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RESEARCH OF THE PROCESS OF CONVERSION OF MICROCRYSTALLINE CELLULOSE IN SUBCRITICAL WATER

Esther Sulman, Валентина Геннадьевна Матвеева, Oleg V. Manaenkov, Olga Kislitsa, Linda Zh. Nikoshvili

First published: 2020-09-20https://doi.org/10.5593/sgem2020/4.1/s17.024View metrics

Abstract

This paper presents the results of a study of the hydrolysis of microcrystalline cellulose in a subcritical water medium. The influence of temperature, time, cellulose/water ratio, cellulose particle size, and other parameters on the hydrolysis process was studied. The influence on the process of pretreatment of aqueous dispersions of cellulose with ultrasound was studied. It was shown that the optimal processing time is 30 min (~ 150 kJ). Over a given period of time, destruction and partial hydrolysis of the amorphous part of cellulose occurs, which is due to an increase in the degree of conversion of cellulose in subcritical water and the yield of glucose. It was shown that subcritical water at a temperature of about 180 °C cellulose undergoes sequential depolymerization to oligosaccharides (including water-soluble), disaccharides and monosaccharides, then hydrolysis. At higher temperatures (230 °C and more), these low molecular weight compounds are repolymerized, condensed and pyrolyzed to form liquid oils and cellulose carbonisates containing compounds with aromatic fragments in the chemical structure.

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Publication details

Title
RESEARCH OF THE PROCESS OF CONVERSION OF MICROCRYSTALLINE CELLULOSE IN SUBCRITICAL WATER
Authors
Esther Sulman, Валентина Геннадьевна Матвеева, Oleg V. Manaenkov, Olga Kislitsa, Linda Zh. Nikoshvili
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Energy and Clean Technologies
Publisher
STEF92 Technology
Year
2020
Pages
185-192
SWS Citekey
Sulman202017185192
ISSN
1314-2704
ISBN
978-619-7603-09-5
Language
en
Publication type
Conference Paper
Keywords
cellulosesubcritical waterhydrolysisultrasoundglucose
References5

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  5. Kobayashi H., Komanoya T., Hara K., Fukuoka A. Water?Tolerant Mesoporous?Carbon?Supported Ruthenium Catalysts for the Hydrolysis of Cellulose to Glucose // Chem. Sus. Chem. 2010. V. 3. P. 440-443.

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