Kinetics of the reaction between MgNi alloys and H2

Akiba, Etsuo; Nomura, K.; Ono, Seigo; Suda, S.

doi:10.1016/0360-3199(82)90069-6

Cited by 107 publications

(49 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, its hydriding and dehydriding rates are very low. Many attempts have been made to enhance the reaction kinetics of magnesium with hydrogen by alloying it with certain metals [1][2][3][4][5][6][7][8][9], mixing it with metal additives in a ball mill [10], plating nickel on its surface [11], and grinding it with Co, Ni, Fe, or V and graphite, etc., mechanically under H 2 (reactive mechanical grinding) [12][13][14]. Huot et al [14] showed that the rapid synthesis of Mg hydride could be achieved by milling at elevated temperature under hydrogen pressure by adding graphite.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen-storage properties of Mg–23.5Ni–(0 and 5)Cu prepared by melt spinning and crystallization heat treatment

Song

Kwon

Bae

et al. 2008

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Hydrogen-storage properties of Mg–23.5Ni–(0 and 5)Cu prepared by melt spinning and crystallization heat treatment

Song

Kwon

Bae

et al. 2008

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

“…A lot of work to improve the hydriding and dehydriding rates of magnesium has been performed by alloying with magnesium metals 5,6) such as Cu, 7) Ni, 8,9) In, 10) Sn, 11) V, 12) and Ni and Y, 13) by synthesizing compounds such as CeMg 12 14) and As shown in these examples, the hydrogen absorption and desorption behaviors of Mg have been studied by using pure Mg or pure MgH 2 as a starting material. The pure MgH 2 is more difficult to synthesize and more expensive than the pure Mg. By comparing the hydrogen absorption and desorption behaviors and the prices, it is necessary to determine which is appropriate to be used as a starting material.…”

Section: )mentioning

confidence: 99%

Hydrogen Storage Properties of Pure MgH2

Kwak¹,

Lee²,

Park³

et al. 2013

Korean. J. Mater. Res.

View full text Add to dashboard Cite

The hydrogen storage properties of pure MgH 2 were studied and compared with those of pure Mg. At the first cycle, pure MgH 2 absorbed hydrogen very slowly at 573 K under 12 bar H 2 . The activation of pure MgH 2 was completed after three hydriding-dehydriding cycles. At the 4 th cycle, the pure MgH 2 absorbed 1.55 wt% H for 5 min, 2.04 wt% H for 10 min, and 3.59 wt% H for 60 min, showing that the activated MgH 2 had a much higher initial hydriding rate and much larger H a (60 min), quantity of hydrogen absorbed for 60 min, than did activated pure Mg. The activated pure Mg, whose activation was completed after four hydriding-dehydriding cycles, absorbed 0.80 wt% H for 5 min, 1.25 wt% H for 10 min, and 2.34 wt% H for 60 min. The particle sizes of the MgH 2 were much smaller than those of the pure Mg before and after hydridingdehydriding cycling. The pure Mg had larger hydrogen quantities absorbed at 573K under 12 bar H 2 for 60 min, H a (60 min), than did the pure MgH 2 from the number of cycles n = 1 to n = 3; however, the pure MgH 2 had larger H a (60 min) than did the pure Mg from n = 4 to n = 6.

show abstract

“…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.

View full text Add to dashboard Cite

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.

show abstract

Kinetics of the reaction between MgNi alloys and H2

Cited by 107 publications

References 4 publications

Hydrogen-storage properties of Mg–23.5Ni–(0 and 5)Cu prepared by melt spinning and crystallization heat treatment

Hydrogen-storage properties of Mg–23.5Ni–(0 and 5)Cu prepared by melt spinning and crystallization heat treatment

Hydrogen Storage Properties of Pure MgH2

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

Contact Info

Product

Resources

About