Ni-Nb-Zr amorphous membranes, prepared by melt-spinning, show great potential for replacing crystalline Pd-based materials in the field of hydrogen purification to an ultrapure grade (>99.999%). In this study, we investigate the temperature evolution of the structure of an amorphous ribbon with the composition Ni32Nb28Zr30Cu10 (expressed in atom %) by means of XRD and DTA measurements. An abrupt structural expansion is induced between 240 and 300 °C by hydrogenation. This structural modification deeply modifies the hydrogen sorption properties of the membrane, which indeed shows a strong reduction of the hydrogen capacity above 270 °C.
Hydrogen induced abrupt structural expansion at high temperatures of a Ni32Nb28Zr30Cu10 membrane for H2 purification / Palumbo, Oriele; Trequattrini, Francesco; Hulyalkar, Madhura; Sarker, Suchismita; Pal, Narendra; Chandra, Dhanesh; Flanagan, Ted; Dolan, Michael; Paolone, Annalisa. - In: MEMBRANES. - ISSN 2077-0375. - ELETTRONICO. - 6:4(2016), p. 48. [10.3390/membranes6040048]
Hydrogen induced abrupt structural expansion at high temperatures of a Ni32Nb28Zr30Cu10 membrane for H2 purification
TREQUATTRINI, Francesco;
2016
Abstract
Ni-Nb-Zr amorphous membranes, prepared by melt-spinning, show great potential for replacing crystalline Pd-based materials in the field of hydrogen purification to an ultrapure grade (>99.999%). In this study, we investigate the temperature evolution of the structure of an amorphous ribbon with the composition Ni32Nb28Zr30Cu10 (expressed in atom %) by means of XRD and DTA measurements. An abrupt structural expansion is induced between 240 and 300 °C by hydrogenation. This structural modification deeply modifies the hydrogen sorption properties of the membrane, which indeed shows a strong reduction of the hydrogen capacity above 270 °C.| File | Dimensione | Formato | |
|---|---|---|---|
|
Palumbo_Hydrogen_2016.pdf
accesso aperto
Tipologia:
Documento in Post-print (versione successiva alla peer review e accettata per la pubblicazione)
Licenza:
Creative commons
Dimensione
2.88 MB
Formato
Adobe PDF
|
2.88 MB | Adobe PDF |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
