Bromate - 1,4-cyclohexanedione - ferroin gas-free oscillating reaction. 1. Basic features and crossing wave patterns in a reaction - diffusion system without gel

Abstract

We present a study of the bromate - 1,4-cyclohexanedione - ferroin oscillating reaction in both well-stirred and reaction-diffusion systems. We investigate the dependence of the system dynamics on the initial reagent concentrations, with the initial concentration of ferroin varied from 0 to 5 × 10-3 M, and show that the system behaves like a typical BZ oscillator if the concentration of ferroin exceeds 5 × 10-5 M. We demonstrate spontaneous formation of spiral waves and transverse wave fronts in quasi-two-dimensional systems and formation of crossing wave patterns in thin layers of solution open to air. © 1996 American Chemical Society.