Abstract
For a large volume air cleanup system in nuclear fusion facility, honeycomb type oxidizing catalyst and absorbing dehumidifier offer a useful advantage in terms of their low pressure drop. In the present study the weight ratio of Pd catalyst on the metal honeycomb of Al-Cr-steel alloy were varied from 0.1 g/L to 4g/L. Catalyst was heated up to over 400 °C with stepwise under flowing air containing hydrogen and methane, and their oxidizing reaction rate was evaluated. Its catalytic activation energies were estimated to be about 36 kJ/mol for hydrogen and 100 kJ/mol for methane. Also it was appeared that the effectiveness of high Pd weight ratio catalyst and high temperature operation, and the limit of previous activation by hydrogen gas.
Published Version
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