Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций
Конференция: Перспективы развития фундаментальных наук; Томск; Томск
Год издания: 2019
Аннотация: The hydrolysis-hydrogenation is one of the most perspective ways of cellulose processing to valuable sorbitol product. It is widely used in the food and pharmaceutical industries as a sweetener and seems to be a perspective platform molecule for the chemical industry. The aim of the present work was the development of solid bifunctПоказать полностьюional (acid-reductive) catalyst based on Ru/C, Ru/CsHPA, Ru-HPA/ZrO2 and Ru-HPA/Nb2O5 for the production of sorbitol from inedible cellulose. Four series of Ru/C, Ru/CsHPA, Ru-HPA/ZrO2 and Ru- HPA/Nb2O5 catalysts contained Ru nanoparticles and differed from each other by the ruthenium precursor, content of Ru and the type of the support were prepared and characterized by different physico-chemical methods of analysis (N2 absorption, TEM, IR, AES). High stability of the catalysts under the reaction conditions was demonstrated. The catalysts were tested in the hydrolysis-hydrogenation of microcrystalline cellulose to sorbitol under 180°C and 50 bar of H2. HPLC analysis demonstrated for sorbitol to be the main reaction product. Mannitol and negligible amount of glucose were also formed. 5-Hydroxymethylfurfural hydrolysis product was found in the presence of a support without metal. The catalysts developed let one to produce sorbitol with maximal yield in the range of 49-63%. The yield of sorbitol depended on the support type, ruthenium content and metal precursor and the maximal yield of sorbitol (63%) was reached in the presence of 1%Ru/Сs3HSiW12O40.
Журнал: Перспективы развития фундаментальных наук
Выпуск журнала: 2
Номера страниц: 81-83
Издатель: Национальный исследовательский Томский политехнический университет