Kinetic studies and optimization of abies wood fractionation by hydrogen peroxide under mild conditions with TiO2 catalyst

The kinetic study of abies wood delignification by H 2 O 2 in the medium acetic acid–water was first carried out in the presence of TiO 2 catalyst under mild conditions: temperatures 70–100 °C, atmospheric pressure. The oxidative delignification process is described satisfactory by the first order e...

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Bibliographic Details
Published in:Reaction kinetics, mechanisms and catalysis mechanisms and catalysis, 2017-02, Vol.120 (1), p.81-94
Main Authors: Kuznetsov, B. N., Sudakova, I. G., Garyntseva, N. V., Djakovitch, L., Pinel, C.
Format: Article
Language:English
Subjects:
Catalysis
Chemical Sciences
Chemistry
Chemistry and Materials Science
Environment and Society
Environmental Sciences
Industrial Chemistry/Chemical Engineering
Physical Chemistry
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Summary:The kinetic study of abies wood delignification by H 2 O 2 in the medium acetic acid–water was first carried out in the presence of TiO 2 catalyst under mild conditions: temperatures 70–100 °C, atmospheric pressure. The oxidative delignification process is described satisfactory by the first order equation in all temperature range. The rate constants varied between 0.80 and 12.3 × 10 −3  min −1 and the activation energy was near 81 ± 0.21 kJ mol −1 . The optimal parameters of the delignification process, providing the effective fractionation of abies wood on microcrystalline cellulose and soluble lignin, were established by experimental and numerical methods.
ISSN:1878-5190
1878-5204
DOI:10.1007/s11144-016-1100-z