The oscillatory behavior during CO oxidation over Cu foil has been observed in the temperature range of 350–750 °C. The oscillatory behavior occurred in CO excess similar to the well-known oscillations during CO oxidation over Ni and Co, but in contrast to the oscillations over Pt, Pd, Ir, and Ru. The periodic variation in oxygen imbalance together with variation in color changes during the oscillations and ex situ XRD measurements indicate that the oscillations were closely connected with the reversible oxidation of Cu to Cu₂O. The oscillations were accompanied by propagation of oxidation and reduction wavefronts.

中文翻译：

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铜箔上CO氧化过程中的自激振荡研究

在350–750°C的温度范围内，观察到了CO在铜箔上氧化过程中的振荡行为。在CO过量中发生的振荡行为类似于在Ni和Co上发生CO氧化过程中众所周知的振荡，但是与在Pt，Pd，Ir和Ru上发生的振荡形成对比。氧不平衡的周期性变化以及在振荡和异位XRD测量过程中颜色变化的变化表明，振荡与Cu向Cu ₂ O的可逆氧化紧密相关。振荡伴随着氧化波和还原波前的传播。