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Quantitative description of the oscillatory behavior of the iodate-sulfite-thiourea system in CSTR

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Abstract

In a limited range of concentration of the reactants, oscillatory changes of pH and iodide ion concentration are observed in the iodate — sulfite — thiourea system in a CSTR. These changes can be quantitatively described by the simultaneous solution of four empirical rate laws of the corresponding sub-systems (iodate-hydrogen sulfite, iodate-iodide, iodine-hydrogen sulfite, and iodine-thiourea), considering two equilibria (sulfite-hydrogen ion and iodine-iodide).

Abstract

В ограниченнчм интервале концентраций реагентов наблюдали колебательные изменения pH и концентраций иодидного иона в системе иодат — сульфит — тиомочевина в CSTR. Эти изменения количественно описаны с помощью одновременного решения четырех эмпирических уравнений скорости соответ-ствующих подсистем (иодат — сульфит водорода, иодат — иодид, иод — сульфит водорода и иод — тиомочевина), принимая во внимание два равновесия (сульфит — ион водорода и иод — иодид).

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Rábai, G., Nagy, Z.V. & Beck, M.T. Quantitative description of the oscillatory behavior of the iodate-sulfite-thiourea system in CSTR. React Kinet Catal Lett 33, 23–29 (1987). https://doi.org/10.1007/BF02066694

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  • DOI: https://doi.org/10.1007/BF02066694

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