Effects of the electrolytes in a closed unstirred Belousov-Zhabotinsky medium

Complex periodic and aperiodic behaviors are reported in an unstirred Belousov-Zhabotinsky reaction at different concentrations of added electrolytes. A route to chaos following a Ruelle-Takens-Newhouse (RTN) scenario is identified. A 3-fold torus was also found in phase space. In this paper, we prove that the concentration of inert added electrolytes is a bifurcation parameter for the sequence period-1 → period-2 → period-3 → chaos.