| The kinetics of the formation of carbon deposit formed on Fe3C in the result of the carburisation of nanocrystalline iron with methane has been studied. The experiments were carried out in the thermobalance (considered as an differential reactor), in the temperature range of 500-600° C under atmospheric pressure. The kinetics of the carbon deposit formation was studied in the kinetic area of the reaction, where the rate of the carburisation process is limited by the dissociative adsorption of methane on the iron carbide surface. The rate of the process is proportional to the methane partial pressure. The determined apparent activation energy for the process of carbon deposit formation is about 150 kJ/mol, the same as the apparent activation energy of the iron carbide formation. |
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