Thermolysis of potassium tetraperoxochromate (cas 12331-76-9)(V). III. Self-propagation regime

Add time:08/11/2019    Source:sciencedirect.com

The phenomenon of self-propagating high-temperature decomposition (SHD) is distinguished in the combustion of condensed substances. K3CrO8 is found to follow such a decomposition. The results of an experimental study of this substance are analyzed using the models of exothermal conversion wave propagation in a condensed phase. Of all the known elementary models, the second kind of model considered for high-temperature melting of the reaction product has proved to be the most suitable. This model gives a general idea of the fundamental physical and chemical processes in K3CrO8 SHD. Further improvement of the model requires that gas evolution should be included. The kinetic characteristics of K3CrO8 thermolysis agree with the SHD rate measurement results. However, the accuracy of estimating these characteristics (within conventional accuracy) is insufficient for independent discrimination of the models and quantitative calculation of the SHD rate.

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