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.
ASJC Scopus subject areas
- Colloid and Surface Chemistry