Oscillatory kinetics and mechanism of the chromate catalyzed decomposition of hydrogen peroxide |
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Authors: | Mihly T Beck Istvn P Nagy Gabriella Szkely |
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Institution: | Mihály T. Beck,István P. Nagy,Gabriella Székely |
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Abstract: | Oscillatory change of pH occurs during the chromate-catalyzed decomposition of hydrogen peroxide in a weakly acidic medium at elevated temperature and at high initial concentration of hydrogen peroxide. In a closed system, there are only two or three periods, but sustained oscillation occurs in a CSTR. In a CSTR bistability is also found. In closed systems the temperature exhibits a great maximum (up to 15°C increase), in a CSTR sustained oscillation occurs at a constant stationary temperature. |
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