Evaluation of ZrCo and other getters for tritium handling and storage

Design of a Multi-Tube Pd-Membrane Module for Tritium Recovery from He in DEMO

“…Anyway, in all the getter beds the uptake time tends to be minor compared to that of the desorption time; such a characteristic requires the use of several separation units and then an increase of the tritium inventory. Cryogenic molecular sieve beds absorb tritium at low temperature (i.e., liquid nitrogen), while the tritium is released by heating up to 150 K. As reported in the literature [32][33][34], this technology allows for high efficiencies of separation (95%-99%).…”

Uranium for hydrogen storage applications : a materials science perspective.

“…The pressure-composition isotherms have been explored by numerous investigators, and much of this data has been reviewed by Manchester [7] and Penzhorn [9]. The plateau pressure and temperature generally follow the well-known relationship log P = -A/T + B. Manchester suggests the data of Mallet [10] is the most authoritative, which gives log P (Pa) = -4590/T (K) + 11.52.…”

“…1: van't Hoff plots for UH 3 compiled from a number of laboratories. Data from Table 3 of Penzhorn's review [9]. 3 He retained in metal tritides, as measured by Bowman [17] and Malinowski [22].…”

Tritium Barrier Materials and Separation Systems for the NGNP

“…Of the two mechanisms, dissolution and hydride formation, hydride formation is a stronger interaction and allows for much greater storage capacity, and therefore hydride formers are used for hydrogen gettering applications. The hydride reaction [68] is shown in Equation 21.…”

“…There are a number of metals and metal alloys that can be used as hydrogen getters, and Penzhorn et al [68] lists a number of metals and compounds along with their operating temperature ranges, hydrogen storage capacities given as a ratio of the number of hydrogen atoms per unit formula, and expected equilibrium hydrogen pressures as a function of temperature expressed as a van't Hoff plot. To operate as a getter, a material must exhibit a very low equilibrium pressure of hydrogen at the hydriding temperature.…”