The isothermal sorption behaviour of aged palladium tritide

Knowles, John P.; Northall, J.; Fletcher, N.D.; Pezet, D.J.

doi:10.1016/j.ijhydene.2017.05.100

Cited by 2 publications

(2 citation statements)

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“…Figure shows a few computed pressure-composition isotherms that can be compared to experiments reported in the literature. − Our results include mass transport effects and do not exactly represent equilibrium between the gas and the solid. Absorption and desorption plateau pressures and widths match reasonably well across the cases shown.…”

Section: Resultsmentioning

confidence: 99%

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Comparison of Designs of Hydrogen Isotope Separation Columns by Numerical Modeling

Robinson

Salloum

2023

Ind. Eng. Chem. Res.

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Mixtures of gas-phase hydrogen isotopologues (diatomic combinations of protium, deuterium, and tritium) can be separated using columns containing a solid such as palladium that reversibly absorbs hydrogen. A temperature-swing process can transport hydrogen into or out of a column by inducing temperature-dependent absorption or desorption reactions. We consider two designs: a thermal cycling absorption process, which moves hydrogen back and forth between two columns, and a simulated moving bed (SMB), where columns are in a circular arrangement. We present a numerical mass and heat transport model of absorption columns for hydrogen isotope separation. It includes a detailed treatment of the absorption−desorption reaction for palladium. By comparing the isotope concentrations within the columns as a function of position and time, we observe that SMB can lead to sharper separations for a given number of thermal cycles by avoiding the remixing of isotopes.

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Section: Resultsmentioning

confidence: 99%

“…Pressure-composition isotherms predicted by our model, evaluated at the temperatures and gas compositions for Pd in ref , Figures –; ref , Figure ; ref , Figure ; and ref , Figure . Dotted lines are approximate representations of the literature data.…”

Section: Resultsmentioning

confidence: 99%