Temperature and Oxygen Effect on Oscillations of the Belousov-Zhabotinsky Reaction with 2-Oxopentanedioic Acid as Substrate

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Title:Temperature and Oxygen Effect on Oscillations of the Belousov-Zhabotinsky Reaction with 2-Oxopentanedioic Acid as Substrate
Creators:
Bala, Daniela
Treindl, Ľudovít
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 65, 12, pp. 1839-1847
Uncontrolled Keywords:2-Oxopentanedioic acid, Ce(IV) ions, Ce(III) ions, Chaotic behaviour, Autocatalytic oxidation, Oxygen and temperature effect, Belousov-Zhabotinsky oscillations, Bromate

Abstract

The temperature dependence of the influence of oxygen on the Belousov-Zhabotinsky (BZ) system with a Ce(IV)-Ce(III) redox catalyst and 2-oxopentanedioic acid as substrate and on the autocatalytic oxidation of Ce(III) ions with bromate was studied in detail. The influence of temperature on the induction period, the period of the second oscillation, duration and number of oscillations, and finally on the average frequency of oscillations, was investigated both in oxygen and in nitrogen. The corresponding activation parameters have been determined and discussed. The most pregnant effect of oxygen is observed on the temperature dependence of the duration and the number of oscillations. The value for enthalpy of activation is more than 50 kJ mol<sup>-1</sup> higher in oxygen than in nitrogen. The presence of oxygen may generate chaotic behaviour or multi-mode oscillations since in the presence of oxygen, new intermediates in the BZ system are formed, thereby increasing its complexity. <p>

Title:Temperature and Oxygen Effect on Oscillations of the Belousov-Zhabotinsky Reaction with 2-Oxopentanedioic Acid as Substrate
Creators:
Bala, Daniela
Treindl, Ľudovít
Uncontrolled Keywords:2-Oxopentanedioic acid, Ce(IV) ions, Ce(III) ions, Chaotic behaviour, Autocatalytic oxidation, Oxygen and temperature effect, Belousov-Zhabotinsky oscillations, Bromate
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:65
Number:12
Page Range:pp. 1839-1847
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc20001839UNSPECIFIED
ID Code:1763
Item Type:Article
Deposited On:06 Feb 2009 17:12
Last Modified:06 Feb 2009 16:12

Citation

Bala, Daniela; Treindl, Ľudovít (2000) Temperature and Oxygen Effect on Oscillations of the Belousov-Zhabotinsky Reaction with 2-Oxopentanedioic Acid as Substrate. Collection of Czechoslovak Chemical Communications, 65 (12). pp. 1839-1847. ISSN 0010-0765

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