X-ray studies of the absorption of hydrogen by palladium-rich Pd(Tb,Tm, Lu) alloys

Sakamoto, Y.; Chen, F.L; Furukawa, Mutsuhisa; Mine, Kenji

doi:10.1016/0022-5088(90)90147-c

Cited by 18 publications

(2 citation statements)

References 27 publications

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“…To the best of our knowledge, no prior experiments have been performed assessing hydrogen transport through this material, although Sakamoto et al noted some time ago that PdTm alloys may have "potential applications as hydrogen diffusion membranes". 15 Our experiments used films with composition Pd 95.5 Tm 4.5 at % (Pd 93 Tm 7 in wt %). These films were quite sensitive to lowtemperature hydrogen embrittlement, rupturing when highpressure hydrogen was applied at 623 or 573 K, as well as when kept under high H 2 pressures at 773 K overnight.…”

Section: Section: Energy Conversion and Storagementioning

confidence: 99%

“…To test the predictions of our models, we fabricated and measured pure hydrogen permeance through PdTm foils. To the best of our knowledge, no prior experiments have been performed assessing hydrogen transport through this material, although Sakamoto et al noted some time ago that PdTm alloys may have “potential applications as hydrogen diffusion membranes” . Our experiments used films with composition Pd 95.5 Tm 4.5 at % (Pd 93 Tm 7 in wt %).…”

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Identifying Metal Alloys with High Hydrogen Permeability Using High Throughput Theory and Experimental Testing

Kang

Coulter

Gade

et al. 2011

J. Phys. Chem. Lett.

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Section: Section: Energy Conversion and Storagementioning

confidence: 99%

mentioning

confidence: 99%

Identifying Metal Alloys with High Hydrogen Permeability Using High Throughput Theory and Experimental Testing

Kang

Coulter

Gade

et al. 2011

J. Phys. Chem. Lett.

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Thermodynamics of Hydrogen Dissolved in Pd‐Tb and Pd‐Dy Alloys

Chen

Sakamoto

Flanagan

1993

Ber Bunsenges Phys Chem

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Hydrogen in Metals / Pd-Tb and Pd-Dy Alloys / p-C Isotherms / ThermodynamicsThe thermodynamic parameters for absorption of hydrogen by Pd-Tb alloys with up to 8.0 at.070 Tb and Pd-Dy alloys with up to 6.0 at.070. Dy have been determined from measurements of the pressure-composition isotherms at temperatures between 273 K and 473 K and hydrogen pressures up to 100 Torr. The results are compared with those of previously determined palladium-rare earth (RE = Sc, Y, Ce, Gd, Yb) alloys. The relative partial molar enthalpy of solution of hydrogen, AH:, at infinite dilution, and the standard enthalpy change, Milat. for / 3hydride formation for both Pd-Tb and Pd-Dy alloys become more exothermic with increasing Tb and Dy contents. The relative chemical potential, ApL, of dissolved hydrogen at infinite dilution at a given temperature in Pd-RE alloys decreases with a decrease of apparent H-H attractive interaction energy with several exceptions.With the exception of Pd-Ce alloys and some high solute metal content alloys, the stabilities of dissolved hydrogen at infinite dilution and 8-hydride phase for a series of Pd-RE-hydrogen systems are mainly governed by the lattice expansion of palladium by the substituent RE atoms which reduces the elastic strain energies necessary for hydrogen occupation of the octahedral interstices.

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Thermodynamic Properties for Solution of Hydrogen in Palladium‐Based Binary Alloys

Sakamoto

Chen

Ura

et al. 1995

Ber Bunsenges Phys Chem

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The thermodynamic parameters for solution of hydrogen at infinite dilution and the (a+B) plateau thermodynamic properties for hydrogen absorption at moderate temperatures for a series of Pd‐based f.c.c binary alloys with relatively low solute metal content have been correlated from the viewpoint of whether the alloy lattice is expanded or contracted to parent Pd lattice. Newly determined data for Pd‐Zn, Pd‐Sb, Pd‐Bi, Pd‐Cr, Pd‐Mo and Pd‐Mn alloys are included. When alloys with solute metals in the same groups are compared, the lattice parameters of Pd binary alloys with the 4 d and 5 d transition elements are, in general, larger than those with the 3 d elements. The relative partial molar enthalpy, ΔH0H, at infinite dilution becomes more exothermic with an increase of lattice parameter for the lattice‐expanded alloys with the exception of Pd‐Pt alloys. Conversely, for contracted alloys, with the exceptions of Pd‐Li, Pd‐Zn, Pd‐Al and low Ti content Pd‐Ti alloys, the enthalpy becomes less exothermic with increasing lattice contraction. The dilute phase solubility at the same temperature as reflected by the relative chemical potential of dissolved hydrogen at infinite dilution, Δμ0H, increases with increasing lattice expansion for the expanded alloys, with the exceptions of Pd‐Pt and Pd‐Nb (Ta), whereas for the contracted alloys, the solubility decreases with increasing lattice contraction, with the exception of the Pd‐Li alloys. The standard free energy change, ΔG0plat' for B‐hydride formation in the expanded alloys decreases with increase of lattice expansion with the exceptions of the Pd‐Pt, Pd‐Zr, Pd‐Sb, Pd‐Nb(Ta) and Pd‐Mn alloys. For the contracted alloys, the B‐hydride becomes less stable with increasing lattice contraction except for the Pd‐Li alloys. The isobaric hydrogen solubilities in Pd alloys at relatively high pressures may be attributed to the influence of the solute metal atoms on the Pd band structure and to the exclusion of H from site occupation due to solute atoms in the nearest neighbor shells; both of these effects are independent of the lattice expansion and contraction.

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X-ray studies of the absorption of hydrogen by palladium-rich Pd(Tb,Tm, Lu) alloys

Cited by 18 publications

References 27 publications

Identifying Metal Alloys with High Hydrogen Permeability Using High Throughput Theory and Experimental Testing

Identifying Metal Alloys with High Hydrogen Permeability Using High Throughput Theory and Experimental Testing

Thermodynamics of Hydrogen Dissolved in Pd‐Tb and Pd‐Dy Alloys

Thermodynamic Properties for Solution of Hydrogen in Palladium‐Based Binary Alloys

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