The Autocatalytic Reduction of Ferriin by Malonic Acid with Regard to the Ferroin-Catalyzed Belousov-Zhabotinsky Reaction

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Title:The Autocatalytic Reduction of Ferriin by Malonic Acid with Regard to the Ferroin-Catalyzed Belousov-Zhabotinsky Reaction
Creators:
Mrákavová, Marta
Melicherčík, Milan
Olexová, Anna
Treindl, Ľudovít
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 68, 1, pp. 23-34
Uncontrolled Keywords:Malonic acid, Belousov-Zhabotinsky reaction, Autocatalytic reaction, Oscillatory reactions, Ferriin reduction, Oxygen influence, Ferroin redox catalyst, Iron

Abstract

The reduction of ferriin ([Fe(phen)<sub>3</sub>]<sup>3+</sup>, phen = 1,10-phenanthroline) by malonic acid (MA) differs from the reduction of Ce(IV) or Mn(III) ions by MA in its autocatalytic character and in a pregnant influence of oxygen, which behaves obviously as a catalyst. The time dependence of the ferroin-ferriin redox potential at the last stage of this reaction has a sigmoidal shape, which indicates autocatalysis. Under anaerobic conditions, the inflection time is of the order of several tens of minutes, since autocatalysis cannot proceed unless a sufficient amount of oxygen is produced <i>via</i> oxidation of water (OH<sup>-</sup> ions) with Fe(IV) formed by the ferriin dismutation. Under aerobic conditions, the inflection time decreases to a value of a few seconds. The probable reaction mechanism is discussed in detail. <p>

Title:The Autocatalytic Reduction of Ferriin by Malonic Acid with Regard to the Ferroin-Catalyzed Belousov-Zhabotinsky Reaction
Creators:
Mrákavová, Marta
Melicherčík, Milan
Olexová, Anna
Treindl, Ľudovít
Uncontrolled Keywords:Malonic acid, Belousov-Zhabotinsky reaction, Autocatalytic reaction, Oscillatory reactions, Ferriin reduction, Oxygen influence, Ferroin redox catalyst, Iron
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:68
Number:1
Page Range:pp. 23-34
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc20030023UNSPECIFIED
ID Code:2043
Item Type:Article
Deposited On:06 Feb 2009 17:15
Last Modified:06 Feb 2009 16:15

Citation

Mrákavová, Marta; Melicherčík, Milan; Olexová, Anna; Treindl, Ľudovít (2003) The Autocatalytic Reduction of Ferriin by Malonic Acid with Regard to the Ferroin-Catalyzed Belousov-Zhabotinsky Reaction. Collection of Czechoslovak Chemical Communications, 68 (1). pp. 23-34. ISSN 0010-0765

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