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Kinetics of the SCWG for the activated carbon catalyst

As the gasification of activated carbon catalyst also plays a role in determining the catalyst lifetime, the kinetics of this process have been determined. It is based on the gas composition measured in the experiments (twenty tests in the temperature range 392-600C) carried out with the PDU, assuming that the gasification rate is proportional to the water mass fraction and the specific surface of char, the variations in the specific surface of the activated carbon are negligible, and the temperature, for the reactor section packed with catalyst particles, is constant. The usual Arrhenius plot allows the activation energy and the product between the specific surface and the pre-exponential factor to be determined as: E=144.32kJ/mol and A=3.4902m/s. It should be noted that the activation energy determined in this study is very close to that reported by other authors.

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