Kinetic study of aspen-wood sawdust delignification by H2O 2 with sulfuric acid catalyst under mild conditions : научное издание


Тип публикации: статья из журнала

Год издания: 2013

Ключевые слова: Aspen-wood, cellulose, kinetics, Oxidative delignification, structure, sulfuric acid catalyst

Аннотация: The process of aspen-wood delignification in the medium "hydrogen peroxide-acetic acid-water-sulfuric acid catalysts" at mild conditions (temperature 70-100 °C, atmospheric pressure) is described by the first order equation. Rate constants vary from 0.25 × 10-4 (70 °C) to 2.5 × 10-4 s-1 (100 °C). The activation energy of aspen-woodПоказать полностьюdelignification is near 91 kJ mol-1. The rather high value of activation energy points to the insignificant role of diffusion limitations at used conditions of aspen-wood delignification. The optimal process conditions for obtaining of the pure cellulose (residual lignin content less 1 wt%) with a yield near 45 wt% were selected. Obtained cellulose has the structure similar to the commercial microcrystalline cellulose. © 2013 Akadémiai Kiadó, Budapest, Hungary.

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Журнал: Reaction Kinetics, Mechanisms and Catalysis

Выпуск журнала: Т. 110, 2

Номера страниц: 271-280

ISSN журнала: 18785190


  • Kuznetsov B.N. (Siberian Federal University)
  • Sudakova I.G. (Institute of Chemistry and Chemical Technology SB RAS)
  • Garyntseva N.V. (Institute of Chemistry and Chemical Technology SB RAS)
  • Djakovitch L. (IRCELYON)
  • Pinel C. (IRCELYON)

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