The Selective Oxidation of Polysaccharides to Formic Acid at the Presence of P-Mo-V Heteropoly Acid Catalysts. The Mechanism of Reaction
Conference attendances
| Language |
Английский |
| Participant type |
Oral |
| Conference |
EuropaCat-XII: 12th European Congress on Catalysis “Catalysis: Balancing the use of fossil and renewable resources”
30 Aug - 4 Sep 2015
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ConferenceType.INTERNATIONAL_CONGRESS, Казань
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| Tags |
heteropoly acid, cellulose, hemicellulose, formic acid, formaldehyde mechanism |
| Authors |
Taran Oxana Pavlovna
1,2
, Gromov Nikolay V.
1
, Zhizhina Elena Georgievna
1
, Rodikova Yulia A.
1
, Parmon Valentin Nikolaevich
1,3
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| Affiliations |
| 1 |
Boreskov Institute of Catalysis SB RAS
|
| 2 |
Novosibirsk State Technical University
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| 3 |
Novosibirsk State University
|
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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.