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Citation: Wu Xiaomao, Li Rusheng. FROM MULTIPLE STEADY STATES TO CHEMICAL OSCILLATION[J]. Acta Physico-Chimica Sinica, ;1985, 1(02): 154-161. doi: 10.3866/PKU.WHXB19850206 shu

FROM MULTIPLE STEADY STATES TO CHEMICAL OSCILLATION

Wu Xiaomao ,
Li Rusheng

1.
Department of Chemistry and Chemical Engineering Tsinghua University; Beijing

Received Date: 22 June 1984
Available Online: 15 April 1985

So far, almost all systems which show chemical oscillation were discovered by chance.In this paper, we discuss the possibility of designing chemical oscillation by introducing a suitable slow feedback step to a system which shows multiple steady states. A criterion of existence of oscillation solution from kinetic equations for model system is given, and a method to identify the region of oscillation solu- tion in parameter space is proposed. With this method, the mechanism of oscilla- tion phenomena in the oxidation of carbon monoxide on Pt catalyst is analysed.
Experimentally, many chemical reacting systems show multiple steady states. A typical situation is shown in Fig.1, where x represents the value of state variable, λ the value of control parameter. The kinetics of the above system can be described by
dx/dt=f(x, λ) (1)
...
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