Библиографическое описание:Hydrogenation of aspen ethanol lignin in Supercritical ethanol in the presence of Ni/c catalyst : научное издание / ALEKSANDR S. KAZACHENKO, ANGELINA V. MIROSHNIKOVA, YURIY N. MALYAR [et al.]. - Текст : непосредственный // Cellulose Chemistry and Technology. - 2025. - Т. 59, № 5-6. - P. 657-663. - This study was carried out within the budget plan # 0287-2021-0012 for the Institute of Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences, on the equipment of the Krasnoyarsk Regional Center for Collective Use, Krasnoyarsk Science Center. - ISSN 0576-9787, DOI 10.35812/CelluloseChemTechnol.2025.59.57.
Аннотация:<jats:p>Lignin is the largest renewable source of aromatic chemicals and has great potential for the production of high value-added chemicals. In this work, we describe the process of hydrogenation of aspen wood ethanol-lignin in supercritical ethanol in the presence of Ni/C catalyst and in the absence of added catalysts. It is shown that at a temperature of 250 °C, the catalyst reduces the yield of solid residue from 7.3 to 1.9 wt%. The total yield of phenolic compounds during non-catalytic hydrogenation does not exceed 5.8 wt%. The bifunctional nickel-containing catalyst increases almost twofold (up to 10.1 wt%) the yield of liquid phenolic products, among which 4-propylsyringol predominates. Increasing the process temperature of catalytic hydrogenation to 300 °C leads to an increase in the yields of monomeric phenolic compounds to 13.4 wt%. In the presence of a catalyst, the molecular weight distribution of liquid products of ethanol lignin hydrogenation shifts to the low molecular weight region, due to an increase in the content of monomeric phenolic compounds in the liquid products.</jats:p>
Издательство:Publishing House of the Romanian Academy
Источник:Cellulose Chemistry and Technology
Выпуск:Т. 59, № 5-6
Номера страниц:657-663
Держатель оригинала документа:Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Prof. V.F. Voino-Yasenetsky Krasnoyarsk State Medical University of the Ministry of Healthcare of Russian Federation, Reshetnev Siberian State University of Science and Technology Institute of Chemical Technologies, Siberian Federal University
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