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过去人们认为不可逆反应与可逆反应不同的地方,在于它是瞬时完成的反应或者是反应产物随着时间稳定增加的反应。但是在最近二十多年来,发现在不可逆反应中,生成物的转化率随着时间或空间发生周期性的变化,转化率由低而高,再由高而低,周而复始,循环不息,最后达到最大值。这种运动的变化一般叫化学振荡。例如在气体流动的敞开体系中,一氧化碳经铂的
In the past, it was thought that the irreversible reaction differs from the reversible reaction in that it is an instantaneous reaction or a reaction in which the reaction product steadily increases with time. However, in the last twenty years, it has been found that in the irreversible reaction, the conversion rate of the product changes cyclically with time or space, the conversion rate is from low to high, from high to low, Finally reached the maximum. This movement is usually called chemical oscillation. For example, in an open system of gas flow, carbon monoxide passes through platinum