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Manganese-catalysed ozonation of glyoxalic acid in aqueous solutions

✍ Scribed by R Andreozzi; R Marotta; R Sanchirico

Publisher: Wiley (John Wiley & Sons)
Year: 2000
Tongue: English
Weight: 138 KB
Volume: 75
Category: Article
ISSN: 0268-2575
DOI: 10.1002/(sici)1097-4660(200001)75:1<59::aid-jctb175>3.0.co;2-x

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✦ Synopsis

Manganese-catalysed ozonation of glyoxalic acid in aqueous solutions has been investigated in the pH range 2.0±4.0. The addition of manganese ions (Mn(II) or Mn(IV)) to a glyoxalic acid±ozone system allows the substrate to be oxidized through a mechanism different from that reported for uncatalysed ozonation, as underlined by the formation of methanoic acid. The presence of solid MnO 2 results in a further increase in the system reactivity. High levels of mineralization are generally achieved during glyoxalic acid-catalysed ozonation.

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