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
,
Международный конгресс, Казань
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| 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
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| Организации |
| 1 |
Институт катализа им. Г.К. Борескова СО РАН
|
| 2 |
Новосибирский государственный технический университет
|
| 3 |
Новосибирский национальный исследовательский государственный университет
|
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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.