Reaction of hydrogen with alloys of magnesium and copper

Reilly, J.J.; Wiswall, R.H.

doi:10.1021/ic50058a020

Cited by 476 publications

(262 citation statements)

References 1 publication

(1 reference statement)

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“…Decomposition temperatures, T dec for metal borohydrides plotted as a function of the electronegativity of the metal, M'. (Rude et al, 2011) 3.2 Thermodynamic tuning using multicomponent systems: reactive additives and reactive hydride composites In 1967 Reilly and Wiswall (Reilly & Wiswall, 1967) found another promising approach to tailor reaction enthalpies of hydrides (MH x ) by mixing them with suitable reactants (A):…”

Section: Borohydridesmentioning

confidence: 99%

Thermodynamics of Metal Hydrides: Tailoring Reaction Enthalpies of Hydrogen Storage Materials

Dornheim¹

2011

Thermodynamics - Interaction Studies - Solids, Liquids and Gases

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Section: Borohydridesmentioning

confidence: 99%

Thermodynamics of Metal Hydrides: Tailoring Reaction Enthalpies of Hydrogen Storage Materials

Dornheim¹

2011

Thermodynamics - Interaction Studies - Solids, Liquids and Gases

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“…A lot of work to improve the hydriding and dehydriding rates of magnesium has been performed by alloying with magnesium metals 2,3) such as Cu, 4) Ni, 5,6) In, 7) Sn, 8) V, 9) and Ni and Y, 10) by synthesizing compounds such as CeMg 12 11) and Mg 76 Ti 12 Fe 12-x Ni x (x = 4, 8), 12) and by making composites such as Mg -20 wt% Fe 23 Y 8 . 13) Aminorroaya et al 14) added Nb and multi-walled carbon nanotubes to Mg-Ni alloys, and Cho et al 15) added transition metals to cast Mg-Ni alloys for the improvement of the reaction rates of Mg with H 2 .…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Absorption at a Low Temperature by MgH2 after Reactive Mechanical Grinding

Song¹,

Lee²,

Kwak³

et al. 2014

Korean. J. Mater. Res.

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Pure MgH 2 was milled under a hydrogen atmosphere (reactive mechanical grinding, RMG). The hydrogen storage properties of the prepared samples were studied at a relatively low temperature of 423 K and were compared with those of pure Mg. The hydriding rate of the Mg was extremely low (0.0008 wt% H/min at n = 4), and the MgH 2 after RMG had higher hydriding rates than that of Mg at 423 K under 12 bar H 2 . The initial hydriding rate of MgH 2 after RMG at 423 K under 12 bar H 2 was the highest (0.08 wt% H/min) at n = 2. At n = 2, the MgH 2 after RMG absorbed 0.39 wt% H for 5 min, and 1.21 wt% H for 60 min at 423K under 12 bar H 2 . At 573 K under 12 bar H 2 , the MgH 2 after RMG absorbed 4.86 wt% H for 5 min, and 5.52 wt% H for 60 min at n = 2. At 573 K and 423 K under 1.0 bar H 2 , the MgH 2 after RMG and the Mg did not release hydrogen. The decrease in particle size and creation of defects by reactive mechanical grinding are believed to have led to the increase in the hydriding rate of the MgH 2 after RMG at a relatively low temperature of 423 K.

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“…However, its reaction rate with H 2 is very low. A lot of work to improve the hydriding and dehydriding rates of magnesium has been performed by alloying with magnesium certain metals 2,3) such as Cu, 4) Ni, 5,6) and Ni and Y, 7) by synthesizing compounds such as CeMg 12 8) and Mg 76 Ti 12 Fe 12-x Ni x (x = 4, 8), 9) and by making composites such as Mg-20 wt% Fe 23 Y 8 . 10) Aminorroaya et al 11) added Nb and multi-walled carbon nanotubes to Mg-Ni alloys and Cho et al 12) added transition metals to cast Mg-Ni alloys to improve the reaction rate of Mg with H 2 .…”

Section: Introductionmentioning

confidence: 99%

Improvement of Hydrogen Storage Properties of Mg by Addition of NbF5 via Mechanical Milling under H2

Kwak¹,

Song²,

Mumm³

2013

Korean. J. Mater. Res.

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A 90 wt% Mg-10 wt% NbF 5 sample was prepared by mechanical milling under H 2 (reactive mechanical grinding). Its hydriding and dehydriding properties were then examined. Activation of the 90 wt% Mg-10 wt% NbF 5 sample was not required. At n = 1, the sample absorbed 3.11 wt% H for 2.5 min, 3.55 wt% H for 5 min, 3.86 wt% H for 10 min, and 4.23 wt% H for 30 min at 593K under 12 bar H 2 . At n = 1, the sample desorbed 0.17 wt% H for 5 min, 0.74 wt% H for 10 min, 2.03 wt% H for 30 min, and 2.81 wt% H for 60 min at 593K under 1.0 bar H 2 . The XRD pattern of the 90 wt% Mg-10 wt% NbF 5 after reactive mechanical grinding showed Mg, β-MgH 2 and small amounts of γ-MgH 2 , NbH 2 , MgF 2 and NbF 3 . The XRD pattern of the 90 wt% Mg-10 wt% NbF 5 dehydrided at n = 3 revealed Mg, β-MgH 2 , a small amount of MgO and very small amounts of MgF 2 and NbH 2 . The 90 wt% Mg-10 wt% NbF 5 had a higher initial hydriding rate and a larger quantity of hydrogen absorbed for 60 min than the 90 wt% Mg-10 wt% MnO and the 90 wt% Mg-10 wt% Fe 2 O 3 , which were reported to have quite high hydriding rates and/or dehydriding rates. The 90 wt% Mg-10 wt% NbF 5 had a higher initial dehydriding rate (after an incubation period) and a larger quantity of hydrogen desorbed for 60 min than the 90 wt% Mg-10 wt% MnO and the 90 wt% Mg-10 wt% Fe 2 O 3 .

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Reaction of hydrogen with alloys of magnesium and copper

Cited by 476 publications

References 1 publication

Thermodynamics of Metal Hydrides: Tailoring Reaction Enthalpies of Hydrogen Storage Materials

Thermodynamics of Metal Hydrides: Tailoring Reaction Enthalpies of Hydrogen Storage Materials

Hydrogen Absorption at a Low Temperature by MgH2 after Reactive Mechanical Grinding

Improvement of Hydrogen Storage Properties of Mg by Addition of NbF5 via Mechanical Milling under H2

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