Hydrodynamic turbulence and diffusion-controlled reactions. Simulation of the effect of stirring on the oscillating Belousov-Zhabotinsky reaction with the radicalator model

Journal Article · Thu Aug 22 00:00:00 EDT 1991 · Journal of Physical Chemistry; (United States)

DOI:https://doi.org/10.1021/j100170a038· OSTI ID:7163611

Noszticzius, Z; Wittmann, M ^[1]; Bodnar, Z; Garamszegi, L ^[2]

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1. Technical Univ. of Budapest (Hungary)
2. Technical Univ. of Budapest (Hungary) Univ. of Texas, Austin (United States)

Different stirring effects of the Belousov-Zhabotinsky (BZ) reaction observed by previous authors and also reported here can be explained and modeled semiquantitatively by a diffusion-controlled radical-radical reaction step of the Radicalator. It is shown that hydrodynamic turbulence can accelerate the rate of a diffusion-controlled reaction considerably provided that both reactants of the diffusion-controlled step in the mechanism of other (non-BZ) reactions as well. Finally, it is found that uniform ultrasonic stirring can substitute for the less uniform mechanical stirring in the BZ reaction.

• OSTI ID: 7163611
• Journal Information: Journal of Physical Chemistry; (United States), Vol. 95:17; ISSN 0022-3654
• Country of Publication: United States
• Language: English

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DIFFUSION
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400201* - Chemical & Physicochemical Properties