Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7706412 | International Journal of Hydrogen Energy | 2018 | 8 Pages |
Abstract
The development of hydrogen purification membranes that meet market demands such as high purity, dynamic hydrogen production even at small scale, and reduced costs is still an open question. With this view, the present study aims at developing, for the first time, a method based on high power impulse magnetron sputtering for the deposition of Pd77Ag23 (wt%) films onto porous alumina substrates to achieve composite membranes with high hydrogen permeability and stability. This technique allows the deposition of films also on complex geometries and can be easily scaled up, thus making this technology a potential candidate for preparing high performing membranes. Membranes made by stable and porous alumina supports and metallic, dense and crystalline Pd77Ag23 layers, from 3.5 μm to 17 μm thick, have been prepared and tested. The membranes showed good hydrogen permeability values, showing flux values up to a maximum of 0.62 molH2 mâ2 sâ1 at 450 °C and ÎP of 300 kPa. The resistance to hydrogen embrittlement and the chemical inertness to syngas were also demonstrated.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
S. Barison, S. Fasolin, S. Boldrini, A. Ferrario, M. Romano, F. Montagner, S.M. Deambrosis, M. Fabrizio, L. Armelao,