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<p>Efficient separation of hydrogen isotopologues is crucial for applications such as the recycling of exhaust streams in nuclear fusion reactors. We report on separation of a ternary <sup>1,2,3</sup>H isotope mixture using thermal desorption spectroscopy (TDS), achieving an enrichment of 1:41:175 (H<sub>2</sub>:D<sub>2</sub>:T<sub>2</sub>) from an initially equimolar (1:1:1) gas mixture, based on selective adsorption using an Ag(I)-exchanged zeolite type Y. Further experiments on binary hydrogen isotope mixtures validated numerical predictions of the separation efficiency for T<sub>2</sub>. Specifically, the high selectivity for tritium over protium of 244 makes the Ag(I)-exchanged zeolite an excellent candidate for energy-efficient isotope separation at liquid-nitrogen temperature.</p>

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Tritium separation from gaseous 1,2,3H isotopologue mixtures by selective adsorption on Ag-exchanged zeolite type Y

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月27日

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  • Alexandra Becker,
  • Holger Lippold,
  • Jing Liu,
  • Michael Hirscher,
  • Cornelius Fischer

摘要

Efficient separation of hydrogen isotopologues is crucial for applications such as the recycling of exhaust streams in nuclear fusion reactors. We report on separation of a ternary 1,2,3H isotope mixture using thermal desorption spectroscopy (TDS), achieving an enrichment of 1:41:175 (H2:D2:T2) from an initially equimolar (1:1:1) gas mixture, based on selective adsorption using an Ag(I)-exchanged zeolite type Y. Further experiments on binary hydrogen isotope mixtures validated numerical predictions of the separation efficiency for T2. Specifically, the high selectivity for tritium over protium of 244 makes the Ag(I)-exchanged zeolite an excellent candidate for energy-efficient isotope separation at liquid-nitrogen temperature.