Novel low energy hydrogen-deuterium isotope breakthrough separation using a trapdoor zeolite

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Andrew J.W. Physick
  • Dominic J. Wales
  • Simon H.R. Owens
  • Paul A. Webley
  • Timothy J. Mays
  • Valeska P. Ting

Detail(s)

Original languageEnglish
Pages (from-to)161-168
Journal / PublicationChemical Engineering Journal
Volume288
Publication statusPublished - 15 Mar 2016
Externally publishedYes

Abstract

Cs-chabazite, a type of zeolite with caesium counter-cations, possesses interesting gas separation properties due to a highly selective molecular "trapdoor" effect. Herein the use of this material for H2/D2 isotope separation is demonstrated. Isotope separation was achieved using breakthrough separation with a single pass through a packed bed at moderate temperatures (293 K) and pressures (0.17 MPa) when one species was in a sufficiently low concentration. The breakthrough separation curves were successfully modelled using the Thomas kinetic breakthrough model and the Yoon and Nelson kinetic breakthrough model, where working transferable kinetic rate constants were developed. Use of this material for hydrogen isotope separation would significantly lower the total energy demand compared with current hydrogen isotope separation techniques such as cryogenic distillation and is applicable to separating out low concentrations of D2 (0.0156%) present in standard grade H2.

Research Area(s)

  • Breakthrough separation, Deuterium, Hydrogen, Isotope separation, Trapdoor zeolite

Citation Format(s)

Novel low energy hydrogen-deuterium isotope breakthrough separation using a trapdoor zeolite. / Physick, Andrew J.W.; Wales, Dominic J.; Owens, Simon H.R.; Shang, Jin; Webley, Paul A.; Mays, Timothy J.; Ting, Valeska P.

In: Chemical Engineering Journal, Vol. 288, 15.03.2016, p. 161-168.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review