Limit cycle relations between the heat production rate and key intermediate concentrations in the oscillating belousov-zhabotinskii and briggs-rauscher reactions

Abstract

Limit cycle relations between heat production rates and oscillating intermediate concentrations are obtained after deconvolution of the calorimetric signal. In the case of the Belousov-Zhabotinskii (BZ) reaction, the area of the power signal coincides for 60% with the fast, autocatalytic part of the process. Numerical simulation using the Oregonator model did not account for the heat production in the slow part of the process. The Briggs-Rauscher (BR) reaction shows a maximum in the heat production rate in the vicinity of the critical iodide concentration.