Determination of experimental conditions for examination of analytes in Bray-Liebhafsky oscillatory reaction in open reactor conditions

Abstract

The Bray-Liebhafsky oscillatory reaction, as an extremely sensitive matrix, can be used for examination of properties of different active substances. Here, bifurcation analysis in continuously feed well stirred tank reactor and construction of bifurcation diagram were done in order to find the best conditions for testing properties of different analytes and their influences on reaction dynamics. Andronov-Hopf supercritical bifurcation point was obtained at temperature, T=45.9 oC, flow rate, jo = 0,007 min-1, and initial experimental concentrations, [H2O2]0 = 6.0×10-2 M, [KIO3]0 = 5.9×10-2 M, and [H2SO4]0 = 5.5×10-2 M. The regions in vicinity of bifurcation points are identified as optimal conditions for analytes test, since the system is the most sensitive to any pertubations in this dynamical state.

Keywords

• Bray-Liebhafsky reaction
• oscillatory reaction
• bifurcation diagram
• Andronov-Hopf bifurcation
• analyte