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以衬底(support)温度为控制参数,研究了温度涨落对非恒温Pt(110)/CO+O2体系反应振荡的影响.发现反应振荡随涨落强度或相关时间的变化出现双随机共振现象;当衬底温度稍远离振荡区时,温度涨落对反应振荡的影响明显减弱.这表明,温度涨落可以有选择地多次加强反应振荡,从而对表面反应起到积极作用.
The effects of temperature fluctuations on the reaction oscillations of the non-constant temperature Pt (110) / CO + O2 system were investigated by using the support temperature as the control parameter. It was found that the double oscillation phenomenon of the reaction oscillations with the variation of the fluctuation intensity or the correlation time When the temperature of the substrate is slightly away from the oscillation region, the influence of temperature fluctuation on the oscillation of the reaction is obviously weakened, which shows that the temperature fluctuation can selectively strengthen the reaction oscillation several times and thus play a positive role on the surface reaction.