Hydrogen Induced Abrupt Structural Expansion at High Temperatures of a Ni(32)Nb(28)Zr(30)Cu(10) Membrane for H(2) Purification

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 t...

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Detalles Bibliográficos
Autores principales: Palumbo, Oriele, Trequattrini, Francesco, Hulyalkar, Madhura, Sarker, Suchismita, Pal, Narendra, Chandra, Dhanesh, Flanagan, Ted, Dolan, Michael, Paolone, Annalisa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5192404/
https://www.ncbi.nlm.nih.gov/pubmed/27879641
http://dx.doi.org/10.3390/membranes6040048
Descripción
Sumario: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 Ni(32)Nb(28)Zr(30)Cu(10) (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.

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