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-wood delignification 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.
Издание
Журнал: Reaction Kinetics, Mechanisms and Catalysis
Выпуск журнала: Т. 110, № 2
Номера страниц: 271-280
ISSN журнала: 18785190
Персоны
- 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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