Stochastic bi-resonance in non-isothermal carbon monoxide catalytic oxidation system

作     者：GONG YuBing1, XU Bo1, HAN JiQu2, XU XiuWei1 & LIU ShengDian1 1 School of Physics & Electronic Engineering, Ludong University, Yantai 264025, China 2 School of Photoelectricity Information Science Technology, Yantai University, Yantai 264005, China 

作者机构：School of Physics & Electronic Engineering Ludong University Yantai China School of Photoelectricity Information Science Technology Yantai University Yantai China 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2007年第50卷第6期

页      面：731-736页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：Supported by the Science Foundation of Ludong University (Grant No. 23140301  L20072805) 

主　　题：non-isothermal system of CO catalytic oxidation, reaction rate oscillation, temperature fluctuation, stochastic bi-resonance 

摘      要：The Pt(110)/CO+O2 system subject to reaction heat, heat conduction and radiative heat transfer is non-isothermal and its temperature varies in time and space. In this paper, taking support temperature (ST) as the control parameter, the effect of the ST fluctuations in the oscillatory dynamics of the non-isothermal Pt(110)/CO+O2 system is numerically studied. It is found that the ST fluctuations may induce stochastic oscillations and the oscillations exhibit stochastic bi-resonance (SBR) with the change of the strength or correlation time of the fluctuations. This result shows that the temperature fluctuations may enhance the chemical reaction oscillations. Moreover, the system can selectively and repeatedly employ the temperature fluctuations to enhance its reaction oscillations. It is also shown when the distance of the ST temperature to the oscillatory region increases a little, the effect of the temperature fluctuations would obviously weaken.