Composition of products delignification of birch wood by hydrogen peroxide in medium “acetic acid - water - catalyst TiO2”
Natalia Victorovna Garyntseva, Irina Gennad'evna Sudakova, Alexander A. Kondrasenko, Andrei M. Skripnikov, Boris N. Kuznetsov
Abstract
The composition and structure of the solid and soluble products of peroxide birch wood delignification in the presence of TiO2 catalyst was studied. The effective delignification proceeds at 100 ° C, atmospheric pressure and obtained microcrystalline cellulose (yield 48.2% mass.), crystallinity index of 0.81 and containing 93.7% mass. cellulose, 5.5% mass. hemicelluloses, 0.5% mass. lignin. Soluble products of peroxide birch wood delignification presented 4-O-methyl-glyukuronoksilanom (84% rel.), monosaccharides and low content of aromatic compounds.