Тип публикации: статья из журнала

Год издания: 2024

Идентификатор DOI: 10.35812/CelluloseChemTechnol.2024.58.84

Ключевые слова: lignin, hydrogenation, ethanol, dft, biomass

Аннотация: Plant biomass is a valuable raw material for the production of important chemicals. Lignin depolymerization processes make it possible to obtain valuable aromatic substances. In this work, the aromatic products of birch ethanol lignin hydrogenation were studied. The lignin depolymerization process was carried out on a ruthenium catПоказать полностьюalyst, varying the oxidation temperature of the carbon carrier. The hydrogenation products were analyzed by GC, GC-MS and DFT. It was shown that the highest yield of monomeric methoxyphenols (about 11 wt%) was achieved using the 3% Ru/C(400) catalyst. Catalysts have a significant effect on the yield and composition of solid, liquid and gaseous products. Thus, the use of the most effective 3% Ru/C(400) catalyst increased the yield of monomeric methoxyphenols from 2.2 to 11.1 wt% compared to the non-catalytic experiment. The liquid products of birch ethanol lignin hydrogenation mainly consist of syringol derivatives, which were studied using density functional theory methods. Spectroscopic (FTIR and NMR) characteristics, HOMO-LUMO, Mulliken atomic charges, electronic parameters, MEP and ALIE were calculated. Optical softness, softness and maximum charge transfer index values increased with increasing chain length of the alkyl radical and the appearance of a double bond

Журнал: Cellulose Chemistry and Technology

Выпуск журнала: Т. 58, № 9-10

Номера страниц: 973-989

ISSN журнала: 05769787

Издатель: Publishing House of the Romanian Academy

• KAZACHENKO ALEKSANDR S. (Institute of Chemistry and Chemical Technology, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Science)
• AKMAN FERIDE (University of Bingöl)
• MIROSHNIKOVA ANGELINA (Institute of Chemistry and Chemical Technology, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Science)
• SKRIPNIKOV ANDREY (Institute of Chemistry and Chemical Technology, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Science)
• LI XIAOMIN (Siberian Federal University)
• SYCHEV VALENTIN V. (Institute of Chemistry and Chemical Technology, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Science)
• SELEZNEVA O.S. (Institute of Chemistry and Chemical Technology, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Science)
• HOLIKULOV UTKIRJON (Samarkand State University)
• ISSAOUI NOUREDDINE (University Monastir)
• AL-DOSSARY OMAR M. (Department of Physics and Astronomy, College of Science, King Saud University)

• Ядро РИНЦ (eLIBRARY.RU)