Библиографическое описание:Deep processing of hemicelluloses to high value-added products and hydrolysis of arabinogalactan on the Al-Zr-SBA-15 solid catalysts : научное издание / Yu. A. Trotsky [et al.]. - Текст : непосредственный // Russian Chemical Bulletin. - 2025. - Т. 74, № 4. - P. 902-911. - The Al-Zr-SBA-15 catalysts synthesized in the framework of the Russian Science Foundation (Project No. 21-73-20269) were used in this work. The Al-Zr-SBA-15 catalysts were tested during arabinogalactan hydrolysis in the framework of the state assignment (Project FWES-2021-0012). - ISSN 1066-5285. - ISSN 1573-9171, DOI 10.1007/s11172-025-4585-7.
Аннотация:Catalysts were developed for the depolymerization of plant polysaccharides based on mesoporous mesostructured silica SBA-15 doped with Al and Zr oxides to enhance acidity. The catalysts were studied by a set of physicochemical methods (X-ray diffraction (XRD), low-temperature adsorption—desorption of N2, scanning and transmission electron microscopy, X-ray photoelectron spectroscopy (XPS), magic angle spinning (MAS) NMR spectroscopy, IR spectroscopy, and point of zero charge (pzc) determination, as well as tested during arabinogalactan depolymerization to high value-added products. The catalyst acidity is the parameter predetermining its activity in the depolymerization. The acidity of the catalysts with the combined doping of SBA-15 with Al and Zr oxides is higher than the one with the individual doping. The maximum yield of monomeric products on 2.5Al-5Zr-SBA-15 is 61.2 wt.% (4 h). Arabinose (4.6 wt.%), galactose (45.2 wt.%), furfural (3.0 wt.%), and 5-hydroxymethylfurfural (16.2 wt.%) are observed among the major products.
Издательство:Pleiades Publishing, Ltd. (Плеадес Паблишинг, Лтд), Москва
Источник:Russian Chemical Bulletin
Выпуск:Т. 74, № 4
Номера страниц:902-911
Держатель оригинала документа:G. K. Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Institute of Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences, Siberian Federal University
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