Hydrogen generation from Nd-Ni-Mg system by hydrolysis reaction

Alasmar, Eliane; Awad, A.S.; Hachem, Dory; Tayeh, Toufic; Nakhl, M.; Zakhour, M.; Gaudin, Etienne; Bobet, Jean-Louis

doi:10.1016/j.jallcom.2017.12.305

Cited by 40 publications

(24 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Mg and Mg17Al12) has to be studied separately. The hydrolysis of Mg have been widely reported [18][19][20][21][22][23][24][25][26][27][28] whereas the "Mg17Al12 -H2" subject is not sufficiently investigated. Previous studies have shown that Mg17Al12 can be used for hydrogen storage [29][30][31][32] while the production of hydrogen by the hydrolysis reaction has never been reported.…”

Section: Introductionmentioning

confidence: 99%

Effect of ball milling in presence of additives (Graphite, AlCl3, MgCl2 and NaCl) on the hydrolysis performances of Mg17Al12

Bacha

Zakhour²,

Nakhl³

et al. 2020

International Journal of Hydrogen Energy

Self Cite

View full text Add to dashboard Cite

In most of the Mg-Al alloys, Al forms with Mg the intermetallic compound Mg17Al12. In order to understand the hydrogen production from the Mg-Al alloys waste by the hydrolysis reaction in "model" seawater (i.e. 3.5 wt. % NaCl), hydrolysis with Mg17Al12 was investigated. The effect of ball milling time, the nature of the additives (graphite, NaCl, MgCl2 and AlCl3) and the synergetic effects of both graphite and AlCl3 were investigated. It has been established that increasing ball milling time up to 5h is necessary to activate the intermetallic and to decrease sufficiently its crystallites and particles size. On one hand, the presence of AlCl3 provides the best hydrolysis performance (14 % of the theoretical hydrogen volume in 1h). On the other hand, the mixture obtained by simultaneous addition of graphite and AlCl3 shows the best hydrolysis performances with 16% of the theoretical H2 volume reached in 1h.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of ball milling in presence of additives (Graphite, AlCl3, MgCl2 and NaCl) on the hydrolysis performances of Mg17Al12

Bacha

Zakhour²,

Nakhl³

et al. 2020

International Journal of Hydrogen Energy

Self Cite

View full text Add to dashboard Cite

show abstract

“…The utilization of salt solutions, in particular chlorides solutions, has beneficial effects caused by Clanions that strongly induce pitting corrosion [3,10,11]. A vast majority of papers reporting hydrogen production by hydrolysis use these solutions in the experiments [8,9,[12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] or hydrolyze a mixture of Mg or MgH2 with a chloride salt prepared by mechanical milling [28][29][30][31]. Among the different chloride solutions those with Mg 2+ and those with acidic cations like Zr 4+ , Fe 3+ and Ti 3+ stand out for being more active [3,31].…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, the higher the specific surface, the faster the reaction rate and the greater the yield. A widely used technique to nanostructure materials is mechanical milling [8,15,16,[18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37]. The combination of cold welding and fracture produces homogeneous materials with small particles, high specific surface area and a microstructure that favors the hydrolysis reaction [37].…”

Section: Introductionmentioning

confidence: 99%

Nanostructured Mg for hydrogen production by hydrolysis obtained by MgH2 milling and dehydriding

Pighin

Urretavizcaya

Bobet

et al. 2020

Journal of Alloys and Compounds

Self Cite

View full text Add to dashboard Cite

The synthesis, characterization and hydrolysis properties of nanostructured MgH2 and Mg in a 0.6 M MgCl2 aqueous solution are reported. The microstructural properties of commercial MgH2 are modified by mechanical milling without additives under H2 atmosphere for 5 h. The nanostructured Mg is obtained by dehydriding the as-milled MgH2 under vacuum at 355 °C for 2.5 h. The as-milled MgH2 shows average hydrolysis properties with good hydrogen production capacity (1390 mL/g H2) and kinetics (50% of the total yield in 2.3 min). The nanostructured Mg exhibits excellent hydrolysis properties with a high yield (910 mL/g H2), fast kinetics (90% of the total yield in 2.6 min) and practically no effect of a MgO/Mg(OH)2 passivating layer. The hydrolysis properties of both materials are attributed to their morphology and microstructure. The activation energies of the reaction are estimated and the mechanisms are discussed.

show abstract

“…Relation (1) delineates a spontaneous and complete reaction (if the preparation is done according to the description in Section 2.4 [48,49]). It stops only upon complete consumption of one of the two reagents (magnesium or water).…”

Section: Description Of the Hydrogen Production Systemmentioning

confidence: 99%

Autonomous Hydrogen Production for Proton Exchange Membrane Fuel Cells PEMFC

Legrée¹,

Sabatier²,

Mauvy³

et al. 2020

JEPT

View full text Add to dashboard Cite

HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

show abstract

Hydrogen generation from Nd-Ni-Mg system by hydrolysis reaction

Cited by 40 publications

References 34 publications

Effect of ball milling in presence of additives (Graphite, AlCl3, MgCl2 and NaCl) on the hydrolysis performances of Mg17Al12

Effect of ball milling in presence of additives (Graphite, AlCl3, MgCl2 and NaCl) on the hydrolysis performances of Mg17Al12

Nanostructured Mg for hydrogen production by hydrolysis obtained by MgH2 milling and dehydriding

Autonomous Hydrogen Production for Proton Exchange Membrane Fuel Cells PEMFC

Contact Info

Product

Resources

About