Budroni Marcello A, Rustici Mauro, Rossi Federico
Department of Chemical, Physical, Mathematical and Natural Sciences, University of Sassari, Via Vienna 2, 07100, Sassari, Italy.
Department of Physical Sciences, Earth and Environment, University of Siena, Piazzetta Enzo Tiezzi 1, 53100, Siena, Italy.
Chemphyschem. 2025 Feb 16;26(4):e202400841. doi: 10.1002/cphc.202400841. Epub 2024 Nov 29.
We review an iconic class of chemical oscillators driven by phase transition instabilities, namely Gas Evolution Oscillators (GEOs). These systems show oscillatory dynamics in the delivery of gas sustained simple reactions yielding gaseous products in a liquid mixture, due to nucleation and supersaturation phenomena. After presenting the main features and properties of these systems, we deepen the underlying mechanism through a unified picture of the various models that have been proposed to describe this kind of oscillations. We finally discuss a concrete example of how such instabilities can impact chemical processes with applied relevance.
我们回顾了一类由相变不稳定性驱动的标志性化学振荡器，即气体逸出振荡器（GEOs）。由于成核和过饱和现象，这些系统在液体混合物中产生气态产物的持续简单反应的气体输送过程中表现出振荡动力学。在介绍了这些系统的主要特征和性质之后，我们通过对为描述这种振荡而提出的各种模型的统一描述，深入探讨了其潜在机制。我们最后讨论了一个具体例子，说明这种不稳定性如何影响具有实际应用意义的化学过程。
