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V2O5/C catalyst for liquid phase oxidation of glyoxal to glyoxylic acid

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Abstract

A study of the catalytic activity of V2O5/C catalyst for the oxygen oxidation of glyoxal has been made, showing that glyoxylic acid can be formed without control of pH value and there is little oxalic acid from the excessive oxidation of glyoxylic acid. The studies of XRD and TEM have shown that V2O5 diffraction peaks gradually strengthen with the increase of the content of V2O5. With the content of 3% V2O5 and the calcination temperature of 573 K, V2O5/C catalyst displayed the best activity and selectivity. The conversion of glyoxal and the selectivity of glyoxylic acid reached 18.76% and 77.70% after 5 h, respectively. Moreover, V2O5/C catalyst showed small deactivation after recycling three times, which indicates that V2O5/C has a higher stability than noble metal catalysts in the reaction medium.

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Authors and Affiliations

  1. Key Laboratory of Coal Science and Technology, Ministry of Education, Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan, 030024, China

    YuLan Niu & RuiFeng Li

  2. Department of Chemical Engineering, Taiyuan Institute of Technology, Taiyuan, 030008, China

    YuLan Niu

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  1. YuLan Niu
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  2. RuiFeng Li
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Correspondence to RuiFeng Li.

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Supported by the Technology Research and Development Project for University of Shanxi Province of China (Grant No. 20051272)

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Niu, Y., Li, R. V2O5/C catalyst for liquid phase oxidation of glyoxal to glyoxylic acid. Sci. China Ser. B-Chem. 52, 1057–1062 (2009). https://doi.org/10.1007/s11426-009-0145-5

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  • DOI: https://doi.org/10.1007/s11426-009-0145-5

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