Design of Transition-Metal Oscillators Based on the Reduction of Permanganate Ions by Keto Dicarboxylic Acids

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Title:Design of Transition-Metal Oscillators Based on the Reduction of Permanganate Ions by Keto Dicarboxylic Acids
Creators:
Melicherčík, Milan
Mrákavová, Marta
Nagy, Arpád
Olexová, Anna
Treindl, Ľudovít
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 60, 5, pp. 781-787

Abstract

<p>Permanganate chemical oscillators with some keto dicarboxylic acids in the presence of phosphoric acid in a continuously stirred tank reactor (CSTR) are described in terms of the phase diagrams in the [ketomalonic acid]<sub>o</sub>-<i>k</i><sub>o</sub>, [oxalacetic acid]<sub>o</sub>-<i>k</i><sub>o</sub>, and [α-ketoglutaric acid]<sub>o</sub>-<i>k</i><sub>o</sub> planes, and in the [H<sub>3</sub>PO<sub>4</sub>]<sub>o</sub>-<i>k</i><sub>o</sub> , [MnO<sub>4</sub><sup>-</sup>]<sub>o</sub>-<i>k</i><sub>o</sub> , temperature-<i>k</i><sub>o</sub> planes. The results show that an optimum degree of stabilization of the Mn(IV) colloid, which may serve as a reservoir of solvated Mn(IV) ions participating in the elementary reaction steps, is a prerequisite for the oscillations in the MnO<sub>4</sub><sup>-</sup>-keto dicarboxylic acid system. A skeleton mechanism for permanganate oscillators with keto dicarboxylic acids involving five reaction steps is proposed.

Title:Design of Transition-Metal Oscillators Based on the Reduction of Permanganate Ions by Keto Dicarboxylic Acids
Creators:
Melicherčík, Milan
Mrákavová, Marta
Nagy, Arpád
Olexová, Anna
Treindl, Ľudovít
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:60
Number:5
Page Range:pp. 781-787
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19950781UNSPECIFIED
ID Code:767
Item Type:Article
Deposited On:06 Feb 2009 17:03
Last Modified:06 Feb 2009 16:03

Citation

Melicherčík, Milan; Mrákavová, Marta; Nagy, Arpád; Olexová, Anna; Treindl, Ľudovít (1995) Design of Transition-Metal Oscillators Based on the Reduction of Permanganate Ions by Keto Dicarboxylic Acids. Collection of Czechoslovak Chemical Communications, 60 (5). pp. 781-787. ISSN 0010-0765

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