Oxidation of alkylaromatic compounds with hydrogen peroxide catalyzed by mixed addenda Keggin heteropolyanions

Ronny Neumann, Mauricio de la Vega

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

Keggin type mixed addenda heteropolyanions containing vanadium atoms such as PV2Mo10O5- 40 are shown to be effective catalysts for the oxidation of alkylaromatic compounds to the respective acetates or alcohols and aldehydes or ketones using 30% hydrogen peroxide as oxidant. Use of spectroscopic techniques including UV-Vis, IR, vanadium-51 and phosphorus-31 NMR, and ESR shows that the H5PV2Mo10O40 compound is not degraded during the catalytic cycle. Oxidation proceeds by homolytic cleavage of H5PV2Mo10O40-peroxo intermediates. The resulting hydroperoxy and hydroxy radicals initiate the formation of benzyl radicals which lead to the product formation.

Original languageEnglish
Pages (from-to)93-108
Number of pages16
JournalJournal of Molecular Catalysis
Volume84
Issue number1
DOIs
Publication statusPublished - Sep 21 1993

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Keywords

  • heteropolyanion
  • hydrogen peroxide
  • molybdenum
  • oxidation
  • polyoxometalates
  • vanadium

ASJC Scopus subject areas

  • Engineering(all)

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