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Kinetic study ofaspen-wood sawdustdelignification byH2O 2 with sulfuricacid catalyst undermild conditions Kuznetsov B.N.Sudakova I.G.Garyntseva N.V.2013 год

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

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База данных: Каталог библиотеки СФУ
Библиографическое описание: Kinetic study of aspen-wood sawdust delignification by H2O 2 with sulfuric acid catalyst under mild conditions : научное издание / B. N. Kuznetsov [et al.]. - Текст : непосредственный // Reaction Kinetics, Mechanisms and Catalysis. - 2013. - Т. 110, № 2. - P. 271-280. - ISSN 1878-5190. - ISSN 1878-5204.
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.
Год издания: 2013
Авторы: Kuznetsov B.N. , Sudakova I.G. , Garyntseva N.V. , Djakovitch L. , Pinel C.
Источник: Reaction Kinetics, Mechanisms and Catalysis
Выпуск: Т. 110, № 2
Номера страниц: 271-280
Держатель оригинала документа: Institute of Chemistry and Chemical Technology SB RAS, IRCELYON, Siberian Federal University
Количество экземпляров:
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