Abstract: The system of Pt(110)/CO+O₂ involving chemical reaction heat, heat conduction and radiation heat transfer is non-isothermal. Its temperature periodically varies in time and space, and thus affects the oscillatory behavior of the system. Our goal is to investigate the effect of the support temperature(ST) noise on the oscillatory dynamics of the system. Taking support temperature(ST) as the control parameter, we studied, via numerical simulation, the effect of ST noise on the dynamic behavior of the non-isothermal surface reaction system. The noise-induced reaction oscillations and stochastic bi-resonance(SBR) are observed, which show that the system can bi-selectively employ the temperature noise to enhance its reaction oscillations. It is also found that the increase of ST can lead to the change of the type of stochastic resonance(SR), namely, the change from the SBR to single SR.

Key words: Pt(110)/CO+O₂ reaction system, Chemical thermal phenomenon, Stochastic bi-resonance