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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Chemical oscillations and waves in the catalyzed bromate-pyrocatechol reaction
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Chemical oscillations and waves in the catalyzed bromate-pyrocatechol reaction

机译：催化溴酸盐-邻苯二酚反应中的化学振荡和波动

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摘要

Long time series of temporal oscillations and wave formation are observed in the catalyzed bromate-pyrocatechol reaction conducted in a batch reactor, in which the induction time is insensitive to the presence of ferroin but is greatly shortened by Ce(III) or Mn(II). On the other hand, the number of oscillations is significantly increased by ferroin, while it is less sensitive to Ce(III) and Mn(II). The ferroin-catalyzed system also exhibits strong photosensitivity, in which illumination could quench the oscillatory behavior. A phase diagram illustrates that the oscillatory behavior of the studied system is more sensitive to the ratio of [pyrocatechol]/[bromate] than their absolute concentrations. Reactions conducted in a spatially extended medium show that the ferroin-catalyzed system supports a two-stage pattern formation with the wave activity surviving for up to 10 h.
机译：在间歇反应器中催化的溴酸盐-邻苯二酚反应中观察到长时间的时间振荡和波形形成，其诱导时间对铁蛋白的存在不敏感，但被Ce（III）或Mn（II）大大缩短了。另一方面，铁氧体显着增加了振荡次数，而对Ce（III）和Mn（II）的敏感性较低。铁氧体催化的系统还表现出很强的光敏性，其中光照可以抑制振荡行为。相图表明，所研究系统的振荡行为对[邻苯二酚] / [溴酸盐]的比率比其绝对浓度更为敏感。在空间扩展的介质中进行的反应表明，铁氧体催化的系统支持两阶段模式的形成，其波活动持续长达10小时。

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