Nanostructured Mg for hydrogen production by hydrolysis obtained by MgH2 milling and dehydriding
hal.structure.identifier | Centro Atómico Bariloche [Argentine] | |
dc.contributor.author | PIGHIN, Santiago | |
hal.structure.identifier | Centro Atómico Bariloche [Argentine] | |
hal.structure.identifier | Instituto Balseiro | |
dc.contributor.author | URRETAVIZCAYA, Guillermina | |
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
dc.contributor.author | BOBET, Jean-Louis | |
hal.structure.identifier | Centro Atómico Bariloche [Argentine] | |
hal.structure.identifier | Instituto Balseiro | |
dc.contributor.author | CASTRO, Facundo | |
dc.date.issued | 2020 | |
dc.identifier.issn | 0925-8388 | |
dc.description.abstractEn | 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. | |
dc.language.iso | en | |
dc.publisher | Elsevier | |
dc.title.en | Nanostructured Mg for hydrogen production by hydrolysis obtained by MgH2 milling and dehydriding | |
dc.type | Article de revue | |
dc.identifier.doi | 10.1016/j.jallcom.2020.154000 | |
dc.subject.hal | Chimie/Matériaux | |
bordeaux.journal | Journal of Alloys and Compounds | |
bordeaux.page | 154000 | |
bordeaux.volume | 827 | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-02648840 | |
hal.version | 1 | |
hal.popular | non | |
hal.audience | Internationale | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-02648840v1 | |
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