THERMAL AND HETEROGENEOUS CATALYTIC CONVERSION OF HYDROLYSIS LIGNIN IN 1,4-DIOXANE

N. A. Bobrova; Боброва Н. А.; A. E. Koklin; Коклин А. Е.; T. V. Bogdan; Богдан Т. В.; I. I. Mishanin; Мишанин И. И.; V. I. Bogdan; Богдан В. И.

doi:10.31857/S2686953522600490

THERMAL AND HETEROGENEOUS CATALYTIC CONVERSION OF HYDROLYSIS LIGNIN IN 1,4-DIOXANE

Authors: Bobrova N.A.¹^,2, Koklin A.E.¹, Bogdan T.V.¹^,2, Mishanin I.I.¹^,2, Bogdan V.I.¹
Affiliations:
1. N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences
2. Lomonosov Moscow State University, Department of Chemistry
Issue: Vol 509, No 1 (2023)
Pages: 76-82
Section: PHYSICAL CHEMISTRY
URL: https://medbiosci.ru/2686-9535/article/view/135967
DOI: https://doi.org/10.31857/S2686953522600490
EDN: https://elibrary.ru/OVDBPW
ID: 135967

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Abstract

The transformation of hydrolytic lignin in 1,4-dioxane at a temperature of 250°C and a pressure of 13.0 MPa and the subsequent hydrogenation of thermal pyrolysis products on a Ru/C catalyst at a temperature of 250°C and a pressure of 10.0 MPa in an autoclave were studied. It has been established that the interaction of hydrolytic lignin with 1,4-dioxane and its catalytic hуdrogenation leads to the splitting of C−O and C−C bonds with the formation of a mixture of products: soluble phenol-derivative oligomers and monomers, products of their hydrogenolysis and hydrogenation, as well as a mixture of C₁−C₅ gas hydrocarbons and C₂−C₅ alcohols, ethers − formed mainly under reaction conditions during the destruction of the solvent − 1,4-dioxane.

Keywords

lignin, 2D NMR structure, depolymerization, hydrogenation, Ru/С, 1,4‑dioxane

References

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