Solubility and Separation Factor of Protium-Deuterium Binary Component System in Palladium.

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  • NISHIKAWA Masabumi
    Department of Nuclear Engineering, Faculty of Engineering, Kyushu University
  • SHIRAISHI Tomofumi
    Department of Nuclear Engineering, Faculty of Engineering, Kyushu University
  • MURAKAMI Kozo
    Department of Nuclear Engineering, Faculty of Engineering, Kyushu University

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  • Solubility and Separation Factor of Pro

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Abstract

<BR>Palladium membrane has been studied for sepration and purification of hydrogen isotopes because of its large permeability. In order to consider permeation of mixture of hydrogen isotopes, solubilities of protium and deuterium in palladium were studied in the temperature range of room temperature to 500°C using breakthrough method. It was observed that solubilities were represented by Sieverts' law and that the separation factor of protium-deuterium binary system was different from the isotope effect ratio. The ideal adsorbed solution theory by Myers and Prausnitz can be applied to estimate the separation factor of protium-deuterium binary system in palladium using the isotope effect ratio observed when protium and deuterium are handled independently. The permeation behavior of multi component hydrogen isotopes through palladium membrane is discussed applying observation on solubilities of this work.

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