A Transition-Metal Oscillator: Oscillatory Oxidation of Manganese(II) by Periodate in a CSTR

Miklós Orbán, István Lengyel, Irving R. Epstein, István Lengyel, Irving R. Epstein

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When manganese(II) is oxidized by periodate ion in a flow reactor, periodic oscillation is observed in the pH, the potential of a Pt electrode, and the absorbance over a wide range of visible wavelengths. No bistability is found. Both comparison with the behavior of permanganate oscillators and a model of the present reaction that gives good agreement with the observed oscillation and autocatalytic batch behavior suggest that the oscillations originate from the manganese chemistry. The primary roles of periodate appear to be to generate and to stabilize the higher oxidation states of manganese.

Original languageEnglish
Pages (from-to)1978-1982
Number of pages5
JournalJournal of the American Chemical Society
Issue number6
Publication statusPublished - Jan 1 1991


ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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