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

Authors

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

Published in

Nature communications. Volume 17. Issue 1. Jul 27, 2026. Epub Jul 27, 2026.

Abstract

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.

PMID:
42509245
Bibliographic data and abstract were imported from PubMed on 28 Jul 2026.

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