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The Selective Oxidation of Polysaccharides to Formic Acid at the Presence of P-Mo-V Heteropoly Acid Catalysts. The Mechanism of Reaction Доклады на конференциях

Язык Английский
Тип доклада Устный
Конференция EuropaCat-XII: 12th European Congress on Catalysis “Catalysis: Balancing the use of fossil and renewable resources”
30 авг. - 4 сент. 2015 , Казань
Ключевые слова heteropoly acid, cellulose, hemicellulose, formic acid, formaldehyde mechanism
Авторы Таран Оксана Павловна 1,2 , Громов Николай Владимирович 1 , Жижина Елена Георгиевна 1 , Родикова Юлия Анатольевна 1 , Пармон Валентин Николаевич 1,3
Организации
1 Институт катализа им. Г.К. Борескова СО РАН
2 Новосибирский государственный технический университет
3 Новосибирский национальный исследовательский государственный университет

Реферат: The kinetics of one-pot oxidative hydrolysis of cellulose, arabino-galactan and xylan were studied in the presence P-Mo-V heteropoly acids as catalysts. The main reaction products fro all substrates appeared to be formic acid and formaldehyde. The observed results allowed us to suppose that one-pot oxidative-hydrolysis in the presence of P-Mo-V heteropoly acids proceeded by a mechanism similar to the periodate oxidation. Vanadium species can connect to hydroxide groups of sugars and broke C-C bond to give formic acid and shorted sugar. Finally such oxidation of C6-aldose leads to formation of 5 molecules of formic acid a 1 formaldehyde molecule. Moreover connection of vanadium to polysaccharides molecules facilitating hydrolysis is also possible.
Библиографическая ссылка: Taran O.P. , Gromov N.V. , Zhizhina E.G. , Rodikova Y.A. , Parmon V.N.
The Selective Oxidation of Polysaccharides to Formic Acid at the Presence of P-Mo-V Heteropoly Acid Catalysts. The Mechanism of Reaction
EuropaCat-XII: 12th European Congress on Catalysis “Catalysis: Balancing the use of fossil and renewable resources” 30 Aug - 4 Sep 2015