Isotope separation factor and isotopic exchange rate between hydrogen and deuterium of palladium

Satoshi Fukada, Katsuhiro Fuchinoue, Masabumi Nishikawa

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35 Citations (Scopus)


An isotopic exchange experiment was performed using a Pd particle bed for a fundamental study of hydrogen isotope separation. The isotope separation factor and the rate constant of the isotopic exchange reaction between gaseous deuterium and hydride were determined from fitting numerical calculations to experimental effluent curves of the Pd bed. The separation factors under the condition of a dilute deuterium concentration were correlated with the relation of αH - D = exp(-0.121 _ 228/T) and were independent of the total hydrogen pressure. The rate-determining step of the overall isotopic exchange reaction at T > 300 K was diffusion in the pore of Pd particles. The step at T < 300 K was estimated to be diffusion in the β-phase Pd, although there is a little possibility of isotopic exchange reaction based on Bonhoeffer-Farcus mechanism. The height equivalent to a theoretical plate, HETP, was correlated as a function of the interstitial fluid velocity in the bed.

Original languageEnglish
Pages (from-to)311-318
Number of pages8
JournalJournal of Nuclear Materials
Issue number3
Publication statusPublished - Nov 1995

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering


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