Nonlinear Dynamics and Thermodynamics Research on Non‐Catalytic Oscillation Reaction of Green Tea

ABSTRACT The non‐catalytic oscillation reaction system of green tea was studied systematically in the paper, and the effects of the concentrations of each reactant (green tea, KBrO 3 and H 2 SO 4 ) and temperature were explored. The research results show that Optimal oscillation occurred at 20.00 mg/mL green tea, 0.54 mol/L H 2 SO 4 , 0.056 mol/L KBrO 3 , and 298.15 K, and activation energies were 80.09 kJ/mol (induction) and 43.68 kJ/mol (oscillation). Using the Arrhenius equation and thermodynamics, reaction order and parameters were determined. The negative entropy change (Δ S <0) indicates a transition from disorder to order.