Abstract
As hydrophilic porous materials usually have a certain amount of structural water, it is naturally inferred that a considerable amount of tritium can be uptaken to the precious metal catalyst with hydrophilic porous substrate through the catalytic isotope exchange reaction between gaseous tritium and structural water of the substrate and the isotope exchange reaction between tritiated water in the gas stream and structural water besides adsorption of tritiated water. Tritium uptaking performances of a Pt-molecular sieve 5A (Pt-MS 5A) catalyst are experimentally discussed in this study. Use of the precious metal catalyst bed itself as the main reactor also to uptake tritium with a removing adsorption bed is proposed in this paper.
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