Spatiotemporal dynamics of minimal bromate oscilla- tors in open one-side-fed reactor

Minimal bromate oscillators represent the simplest version of the oscillatory reactions based on the chemistry of oxybromine species. Here, we present numerical and experimental evidences of the existence of reaction-diffusion waves in the ferroin catalyzed minimal bromate oscillator. The wave dynamics depends not only on the characteristic chemical time scales but also on that of the diffusive matter exchange which occurs between the reaction-diffusion medium and its environment. We show that the extended reactivity of ferroin catalyst towards the oxybromine species plays an essential role in the observed phenomena. In the cerium catalyzed minimal bromate oscillator the simulations support only the formation of spatial bistability

pH-oscillations in the bromate-sulfite reaction in semibatch and in gel-fed batch reactors

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