Effect of Different Activation Methods on the Composition, Structure and Reactivity of Aspen Wood
B. N. KUZNETSOV1,2, V. I. SHARYPOV1,2, S. A. KUZNETSOVA1,2, S. V. BARYSHNIKOV1, V. G. DANILOV1, O. V. YATSENKOVA1 and N. M. IVANCHENKO1
1 Institute of Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences, Ul. K. Marksa 42, Krasnoyarsk 660049 (Russia),
E-mail: bnk@icct.ru
2 Siberian Federal University, Pr. Svobodny 79, Krasnoyarsk 664041 (Russia)
Keywords: aspen wood, mechanical activation, explosive autohydrolysis, catalytic oxidation, structure, composition, reactivity
Pages: 507–513
Abstract
An effect of different methods for aspen wood activation (grinding in the mills of different types, explosive autohydrolysis, catalytic oxidation by hydrogen peroxide and the combination of these methods) exerted on the structure, chemical composition and reactivity of activated wood was studied. It has been found that all the methods of aspen wood mechanical pretreatment result in changing the supramolecular structure, chemical composition and reactivity thereof: activated samples exhibit increasing the content of readily hydrolysable polysaccharides, with reducing the concentration of polysaccharides difficult to hydrolyze and of residual lignin, as well as with increasing the rate of polysaccharide acidic hydrolysis into monosaccharides and the rate of lignin oxidation by hydrogen peroxide.
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