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V2O5/SBA-15 catalyst for liquid phase oxidation of glyoxal to glyoxylic acid

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Abstract

The oxidation of glyoxal is one of the important ways of synthesizing glyoxylic acid. In this paper, vanadium oxide catalysts supported on mesoporous SBA-15 as a carrier were prepared by impregnation. The factors such as loading, calcination temperature, reaction temperature, and amount of catalyst on performance have been investigated. V2O5/SBA-15 was further used to make a detailed characterization of XRD, BET, H2-TPR. The conclusions are as follows: V2O5/SBA-15 catalyst has such advantages as having a larger specific surface area, a large pore diameter, a regular pore, and a thicker pore wall, which can make active components disperse fully and homogeneously and have a very good reactivity and selectivity; the features of V2O5/SBA-15 catalyst, such as isolated vanadium oxide species with higher surface concentration, and a particular regular macroporous structure, have made V2O5/SBA-15 catalyst have a good performance for selective oxidation of glyoxal; the conversion of glyoxal is 17.45 %, and the rate of selectivity of glyoxylic acid is 75.7 %.

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Acknowledgments

This research was financially supported by the Research Fund for the n&d Program of Higher Education of Shanxi (No.20091042).

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Authors and Affiliations

  1. Department of Chemistry and Chemical Engineering, Taiyuan Institute of Technology, Taiyuan, Shanxi, 030008, China

    Yu Lan Niu & Li Jun Zhai

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  1. Yu Lan Niu
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  2. Li Jun Zhai
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Correspondence to Li Jun Zhai.

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Niu, Y.L., Zhai, L.J. V2O5/SBA-15 catalyst for liquid phase oxidation of glyoxal to glyoxylic acid. Monatsh Chem 145, 201–207 (2014). https://doi.org/10.1007/s00706-013-1018-3

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  • DOI: https://doi.org/10.1007/s00706-013-1018-3

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