Evidence of malonyl radical controlled oscillations in the Belousov-Zhabotinskii reaction (malonic acid-bromate-cerium system)

1990 ◽  
Vol 94 (7) ◽  
pp. 2915-2921 ◽  
Author(s):  
Horst Dieter. Foersterling ◽  
Szilvia. Muranyi ◽  
Zoltan. Noszticzius
Keyword(s):  
Malonic Acid ◽  
Belousov Zhabotinskii Reaction

Influence of oxygen on Belousov-Zhabotinskii reaction

1980 ◽  
Vol 45 (4) ◽  
pp. 1168-1172 ◽  
Author(s):  
Ľudovít Treindl ◽  
Peter Fabian
Keyword(s):  
Citric Acid ◽  
Induction Period ◽  
Malonic Acid ◽  
Rate Constants ◽  
Activation Parameters ◽  
Oscillation Period ◽  
Redox Catalyst ◽  
Basic Parameters ◽  
Effect Of Oxygen ◽  
Belousov Zhabotinskii Reaction

This work deals with the effect of oxygen on basic parameters of the Belousov-Zhabotinskii reaction in the presence of Ce4+/Ce3+ redox catalyst and malonic acid, citric acid, or 2,4-pentanedione as substrates. Oxygen lowers the duration of the induction period and the first oscillation period as well as the corresponding activation parameters. Oxygen lowers also rate constants and activation parameters for oxidation of malonic and citric acids with Ce4+ ions. It is concluded that the effect of oxygen on the Belousov-Zhabotinskii reaction consists mainly in its catalytic influence on the oxidation of the substrate with Ce4+ ions.

Belousov–Zhabotinskii type oscillation reaction with glycerol and kinetics of reactions between the system components

1987 ◽  
Vol 52 (10) ◽  
pp. 2375-2382 ◽  
Author(s):  
Ľubica Adamčíková ◽  
Peter Ševčík
Keyword(s):  
Oscillation System ◽  
Chemical Oscillations ◽  
Oscillation Reaction ◽  
Reaction Solution ◽  
System Components ◽  
Probable Source ◽  
Belousov Zhabotinskii Reaction ◽  
Kinetics Of ◽  
Hydrolysis Of ◽  
Type Oscillation

Glycerol causes chemical oscillations in Belousov-Zhabotinskii reaction in a closed system as well as in a reaction solution bubbled with nitrogen. Since the oxidation of glycerol with bromate ions does not proceed autocatalytically and bromine in the oxidation state 0 or +1 in the absence of light does not react with glycerol, hydrolysis of bromine is the probable source of bromide ions in the studied oscillation system.

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