Composition and operation of hydrogen-selective amorphous alloy membranes

Dolan, Michael D.; Dave, N.; Ilyushechkin, Alexander; Morpeth, L.D.; McLennan, K.G.

doi:10.1016/j.memsci.2006.09.014

Cited by 158 publications

(100 citation statements)

References 223 publications

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“…Phair and Badwal [17] reviewed materials for separation of membranes for hydrogen and oxygen production, H2 and CO2 separation, and power generation. In 2006, Dolan et al [18] published a comprehensive review on hydrogen selective amorphous membranes. They reported on significant issues related to amorphous membranes with respect to crystallization during long-term sustainability of amorphous membranes at elevated temperatures (673 K).…”

Section: Brief History Of Development Of Amorphous Alloy Membranesmentioning

confidence: 99%

“…This diffusion can degrade the surface activity and can lead to the formation of impermeable compounds at the interface. More details can be found in Dolan's review [18]. In 2010, Yamaura and Inoue [49] conducted an interesting study on surface coatings of Pd and Ni on amorphous Ni40Nb20Ta5Zr30Co5.…”

Section: Catalytic Dissociation Of Hydrogen Molecules By Pd and Nmentioning

confidence: 99%

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Developments in the Ni–Nb–Zr amorphous alloy membranes

et al. 2016

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Most of the global H2 production is derived from hydrocarbon-based fuels, and efficient H2/CO2 separation is necessary to deliver a high purity H2 product. Hydrogen-selective alloy membranes are emerging as a viable alternative to traditional pressure swing absorption processes as a means for H2/CO2 separation. These membranes can be formed from a wide range of alloys, and those based on Pd are the closest to commercial deployment. The high cost of Pd (USD ~31,000 kg -1 ), however, is driving the development of less-expensive alternatives, including inexpensive amorphous (Ni60Nb40)100-xZrx alloys. Amorphous alloy membranes can be fabricated directly from the molten state into continuous ribbons via melt spinning, and depending on the composition, can exhibit relatively high hydrogen permeability between 473 and 673 K. Here we review recent developments in these low-cost membrane materials, especially with respect to permeation behavior, electrical transport properties, and understanding of local atomic order. In a quest to further understand the nature of these solids, atom probe tomography has been performed, revealing amorphous Nb-rich and Zr-rich clusters embedded in, majority Ni matrix, whose compositions deviated from the nominal overall composition of the membrane.

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Section: Brief History Of Development Of Amorphous Alloy Membranesmentioning

confidence: 99%

Section: Catalytic Dissociation Of Hydrogen Molecules By Pd and Nmentioning

confidence: 99%

Developments in the Ni–Nb–Zr amorphous alloy membranes

et al. 2016

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“…The separation membrane methods are mainly divided into metal separation, polymer and ceramic membranes. As the separation membrane using metal is of low permeability and high selectivity, it has the advantage of obtaining high quality hydrogen 1) .…”

Section: Introductionmentioning

confidence: 99%

Effects of Nickel Supports on Hydrogen Permeability of Vanadium based Membrane

Cho¹,

Choi²,

Jung³

et al. 2013

Transactions of the Korean hydrogen and new energy society

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>> The separation of hydrogen depends on porosity, diffusivity and solubility in permeation membrane.Dense membrane is always showing a solution diffusion mechanism but porous membrane is not showing. Therefore, porous membrane has a good hydrogen flux due to pore is carried out transferred media. This mechanism is named as the Knudsen diffusion. Hydrogen molecules or hydrogen atoms are diffused along pore that is a mean free path. In this study, complex layer hydrogen permeation membrane was fabricated by hot press process. And then, it was evaluated and calculated to relationship between hydrogen permeability and membrane porosity.

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“…One advantage of amorphous alloys over their crystalline counterparts is their relatively broader range of interstitial-site energies. As a result, they can potentially absorb more hydrogen atoms in a given volume and have higher hydrogen permeation rates [4][5] than the same material in the crystalline state. Another advantage is their large elastic limit, ~ 2%, which could alleviate one of the main problems of current hydrogen-storage materials, the degradation of the material due to a large volume change between the hydrogenation and de-hydrogenation process.…”

Section: Introductionmentioning

confidence: 99%

“…Bulk amorphous metallic alloys exhibit many unique material properties [12][13] , leading them to promising materials for various advanced engineering applications 13 . Recently, some of the BMG compositions have drawn considerable attention for their potential as hydrogen purification/separation membranes 4 . Some amorphous alloys that are composed of ETM and LTM were found to have performances comparable to palladium-based membranes and could be cheaper alternatives for hydrogen-selective membranes 4,14 .…”

Section: Introductionmentioning

confidence: 99%

Inelastic neutron scattering study of the hydrogenated (Zr55Cu30
Chuang
¹
,
Udovic
²
,
Liaw
³

et al. 2011
Phys. Rev. B

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The lattice dynamics of both as-charged and room-temperature-aged, hydrogenated bulk metallic glasses (BMG's) with the stoichiometry of (Zr 55 Cu 30 Ni 5 Al 10 ) 99 Y 1 have been investigated by inelastic neutron scattering at 4 K. The vibrational density of states (DOS) of dissolved hydrogen atoms in the as-charged BMG shows a broad band maximized at ~135 meV. Three months of room-temperature aging caused this band to narrow somewhat, losing intensity at both lower and higher energies. The results suggest that hydrogen atoms preferably occupy the interstitial tetrahedral-like t-sites comprised of four Zr atoms, with a local atomic arrangement similar to δ-zirconium hydride. At higher hydrogen loadings, hydrogen atoms can also occupy octahedral-like and/or more Zrdeficient tetrahedral-like o-sites. The spectral differences between the as-charged and aged specimens and accompanying Vicker's hardness measurements suggested that around two-thirds of the hydrogen atoms in the as-charged specimen were trapped in the strongly binding t-sites and relatively immobile at room temperature, while the remaining one-third occupied the more weakly binding o-sites and disappeared from the specimen upon aging. These latter sites most likely play a crucial role in the diffusion of hydrogen in BMG's at room temperature.

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Composition and operation of hydrogen-selective amorphous alloy membranes

Cited by 158 publications

References 223 publications

Developments in the Ni–Nb–Zr amorphous alloy membranes

Developments in the Ni–Nb–Zr amorphous alloy membranes

Effects of Nickel Supports on Hydrogen Permeability of Vanadium based Membrane

Inelastic neutron scattering study of the hydrogenated (Zr55Cu30
Chuang
¹
,
Udovic
²
,
Liaw
³

et al. 2011
Phys. Rev. B

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Composition and operation of hydrogen-selective amorphous alloy membranes

Cited by 158 publications

References 223 publications

Developments in the Ni–Nb–Zr amorphous alloy membranes

Developments in the Ni–Nb–Zr amorphous alloy membranes

Effects of Nickel Supports on Hydrogen Permeability of Vanadium based Membrane

Inelastic neutron scattering study of the hydrogenated (Zr55Cu30Chuang1, Udovic2, Liaw3 et al. 2011Phys. Rev. B

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Inelastic neutron scattering study of the hydrogenated (Zr55Cu30
Chuang
¹
,
Udovic
²
,
Liaw
³

et al. 2011
Phys. Rev. B