Citation: Yu Lan Niu, Zheng Xu, Min Li, Rui Feng Li. Oxidation of glyoxal to glyoxylic acid by oxygen over V₂O₅/C catalyst[J]. Chinese Chemical Letters, ;2008, 19(2): 245-248. doi: 10.1016/j.cclet.2007.11.015 shu

Oxidation of glyoxal to glyoxylic acid by oxygen over V₂O₅/C catalyst

Yu Lan Niu ^a,b, ,
Zheng Xu ^b ,
Min Li ^b ,
Rui Feng Li ^a

a Key Laboratory of Coal Science and Technology, MOE, Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, PR China;
b Department of Chemical Engineering, Taiyuan Institute of Technology, Taiyuan 030008, PR China

Received Date: 26 July 2007

Fund Project: This study was supported by Research Fund for the n&d Program of Higher Education of Shanxi (No. 20051272).

A novel vanadium oxide catalyst supported on active carbon was prepared by an incipient wetness impregnation method, and the precursor was obtained from oxalic acid aqueous solutions of NH₄VO₃.The catalyst was applied liquid phase oxidation of glyoxal to glyoxylic acid.It was found that V₂O₅/C catalyst exhibited obvious activity for glyoxal oxidation.Glyoxylic acid could be obtained without pH regulation during the reaction.By using this catalyst, the conversion of glyoxal and the yield of glyoxalic acid were 29.2% and 13.6%, respectively at 313 K and oxygen flow 0.1 L/min after reaction for 10h.
- Glyoxal,
- Glyoxylic acid,
- Vanadium catalyst,
- Oxidation
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