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Abstract  

Activation energies of ignition for the thermokinetic oscillations obtained during the heterogeneous catalytic oxidation of ethanol on Pd/Al2O3 in a dynamic calorimeter were obtained using the minimum values of the temperature oscillations. These activation energies of ignition are greater than the activation energies of the corresponding oscillations. The obtained results are discussed by assuming a PdOx redox cycle.

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are in good agreement with the figure obtained from the ignition temperature analysis presented above (106.0 kJ/mol). The measurement of the ignition temperatures has been recently used for the analysis of the thermokinetic oscillations during the

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