Hydrogen solution properties in a series of amorphous Zr–Hf–Ni alloys at elevated temperatures

Hara, Shigeki; Huang, Hui; Ishitsuka, Misaki; Mukaida, Masakazu; Haraya, Kenji; Itoh, Naotsugu; Kita, Koichi; Kato, Komei

doi:10.1016/j.jallcom.2007.01.185

Cited by 15 publications

(6 citation statements)

References 17 publications

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“…Then, an isotherm was measured in the order of desorption and absorption between 0.003 and 1.0 MPa. To warrant the measurements' reproducibility, all procedures (evacuation, desorption, absorption, and temperature change) were controlled automatically after setting a sample into the sample cell [15]. To diminish the influence of room temperature, all tubes and cells were put in thermostats or tape heaters.…”

Section: Solubility Measurementmentioning

confidence: 99%

Hydrogen diffusion coefficient and mobility in palladium as a function of equilibrium pressure evaluated by permeation measurement

Hara

Caravella

Ishitsuka

et al. 2012

Journal of Membrane Science

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Section: Solubility Measurementmentioning

confidence: 99%

Hydrogen diffusion coefficient and mobility in palladium as a function of equilibrium pressure evaluated by permeation measurement

Hara

Caravella

Ishitsuka

et al. 2012

Journal of Membrane Science

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“…Previous studies [9,[15][16][17] have shown that Zr is the ETM most conducive to permeability in Ni 60-70 ETM 40-30 -type alloys, by virtue of Zr having greater hydrogen solubility than other ETMs. Results presented here show that Nb and Ta are most conducive to maximizing the thermal stability.…”

Section: Thermal Propertiesmentioning

confidence: 99%

Ni-based amorphous alloy membranes for hydrogen separation at 400°C

Dolan

Dave

Morpeth

et al. 2009

Journal of Membrane Science

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“…[37] [38] reported hydrogen solution properties of Zr36-xHfxNi64 (x = 0 -36 at. %) at elevated temperatures (473 -573 K) by using the Sieverts method and found that permeability increased with increasing Zr content.…”

Section: Amorphous Ni-based Membranesmentioning

confidence: 99%

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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Hydrogen solution properties in a series of amorphous Zr–Hf–Ni alloys at elevated temperatures

Cited by 15 publications

References 17 publications

Hydrogen diffusion coefficient and mobility in palladium as a function of equilibrium pressure evaluated by permeation measurement

Hydrogen diffusion coefficient and mobility in palladium as a function of equilibrium pressure evaluated by permeation measurement

Ni-based amorphous alloy membranes for hydrogen separation at 400°C

Developments in the Ni–Nb–Zr amorphous alloy membranes

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