Keywords
vanillin
cellulose
flaxseed bark
pine
oxidation
catalysis
mass transfer
cellulose
flaxseed bark
pine
oxidation
catalysis
mass transfer
How to Cite
Tarabanko V., Kaygorodov K., Smirnova M. MASS TRANSFER IN THE OXIDATION OF NATIVE LIGNINS TO VANILLIN BY OXYGEN // BIOAsia-Altai, 2024. Vol. 4, № 1. P. 509-513. URL: https://journal.asu.ru/bioasia/article/view/16517.
Abstract
It was found that in the processes of oxidation of native lignins of plant raw materials (flax, pine) by oxygen at 160 °C into vanillin and cellulose, an increase in the intensity of mass transfer leads to the transition from the limiting stage of diffusive oxygen transfer through the gas-liquid surface to the diffusion stages inside the solid particles of raw materials. The maximum theoretical yields of vanillin can be obtained in the diffusion mode at both mentioned modes of diffusion limitation.
References
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2. Tarabanko, V.E.; Tarabanko, N. Catalytic oxidation of lignins into the aromatic aldehydes: general process trends and development prospects. Int. J. of Molecular Sciences, 2017, v. 18, p. 2421.
3. Tarabanko V.E., Vigul D.O., Kaygorodov K.L., Kosivtsov Y., Tarabanko N. Chelbina Y.V. Influence of mass transfer and acid prehydrolysis on the process of flax shives catalytic oxidation into vanillin. Biomass Conversion and Biorefinery. - 2022. - DOI: https://doi.lorg/10.1007/s13399-022-02366-8.
4. Брагинский Л.Н., Бегачев В.И., Барабаш Е.М. Перемешивание в жидких средах. Ленинград. Химия, 1984, с. 91.
5. Tarabanko V.E., Kaygorodov K.L., Vigul D.O., Tarabanko N., Chelbina Y.V., Smirnova M.A. Influence of Acid Prehydrolysis on the Process of Wood Oxidation into Vanillin and Pulp. J. Wood Chem. Techn., 2020. V. 40, Iss. 6, p. 421-433. DOI https://doi.org/10.1080/02773813.2020.1835984.
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