学術雑誌論文 DEVELOPMENT OF HYDROPHOBIC PLATINUM CATALYST FOR OXIDATION OF TRITIUM IN JAEA

岩井, 保則  ,  枝尾, 祐希  ,  浅原, 浩雄  ,  林, 巧

9 ( 267 )  , pp.272 - 272 , 2017-01 , ELSEVIER
ISSN:2352-1791
内容記述
To design a recombiner packed with hydrophobic catalyst for passive tritium oxidation, the development of manufacturing technology for hydrophobic platinum catalyst and the following analysis on reaction rate are essential. This presentation deals with the reaction rate for tritium oxidation over a hydrophobic platinum catalyst at a temperature between room temperature and 473 K. Two kinds of hydrophobic platinum catalysts; supported with styrene-divinylbenzene and with silica were used for this test. The results indicate that 1) the reaction rate is effected by the particle size of platinum, 2) the order of reaction is 0.5 of hydrogen concentration at room temperature in case of a hydrogen concentration lower than 100 ppm. The rate-determining step approximation method is applied for the discussion on the reaction mechanism of tritium oxidation over platinum catalyst.

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