Hydrogen Induced Abrupt Structural Expansion at High Temperatures of a Ni32Nb28Zr30Cu10 Membrane for H2 Purification

Membranes

Michael Dolan¹  Francesco Trequattrini²  Oriele Palumbo²  Annalisa Paolone²  Dhanesh Chandra³  Narendra Pal³  Madhura Hulyalkar³  Suchismita Sarker³  Ted Flanagan⁴ 

[1] Commonwealth Scientific and Industrial Research Organisation, Queensland Centre for Advanced Technologies, Energy, 1 Technology Court, Pullenvale 4069, Australia;Consiglio Nazionale delle Ricerche, Istituto del Sistemi Complessi, U.O.S. La Sapienza, Piazzale A. Moro 5, Rome 00185, Italy;Department of Chemical and Materials Engineering, University of Nevada, Reno, NV 89557, USA;Department of Chemistry, University of Vermont, Burlington, VT 05405, USA;

关键词: lattice expansion;    amorphous membranes;    hydrogen sorption;    XRD;    DTA;    hydrogenation enthalpy;   

DOI  :  10.3390/membranes6040048

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown