Mostrar el registro sencillo del ítem

Effect of microwave irradiation on hydrogen sorption properties of hand mixed MgH2 – 10 wt.% carbon fibers

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierLaboratoire de Chimie Physique des Matériaux [LCPM]
dc.contributor.authorAWAD, Abdel Salam
hal.structure.identifierLaboratoire de Chimie Physique des Matériaux [LCPM]
dc.contributor.authorNAKHL, Michel
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorZAKHOUR, Mirvat
hal.structure.identifierUniversidade Federal do ABC = Federal University of ABC = Université Fédérale de l'ABC [Brazil] [UFABC]
dc.contributor.authorSANTOS, S. F.
hal.structure.identifierUniversidade Federal do ABC = Federal University of ABC = Université Fédérale de l'ABC [Brazil] [UFABC]
dc.contributor.authorSOUZA, F. L.
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBOBET, Jean-Louis
dc.date.issued2016
dc.identifier.issn0925-8388
dc.description.abstractEnThe effect of microwave (MW) irradiation on the hydrogen sorption properties of magnesium powder is explored in the present work. MgH2 – 10 wt.% CFs (CFs = Carbons Fibers) was prepared by hand mixing, dehydrogenated under microwave irradiation for 20 s and then hydrogenated/dehydrogenated at about 300 °C – 1 MPa and 330 °C–0.03 MPa to investigate the effect of microwave irradiation on the solid/gas sorption properties. It has to be noted that the hydrogen absorption capacity and sorption kinetics of the MgH2 – 10 wt.% CFs mixture increased after dehydriding under MW irradiation. The MgH2 – 10 wt.% CFs mixture dehydrogenated by microwave irradiation can absorb about 5.8 wt.% and 5.3 wt.% H at 330 and 300 °C, respectively, within 2 h while the as-prepared MgH2 – 10 wt.% CFs mixture absorb only 4.6 wt.% H within the same duration. It is also demonstrated that MgH2 – 10 wt.% CFs mixture dehydrogenated by microwave irradiation exhibited good hydrogen desorption properties and, as an example, a microwave irradiated sample could release 5.8 wt.% H within 1 h at 330 °C in comparison to the as-prepared MgH2 – 10 wt.% CFs mixture which desorbed 4.4 wt.% H within 3 h. Scanning electron microscopy (SEM) images revealed that the particle sizes of the MW dehydrogenated mixture decreased after several solid/gas sorption cycles. This contribute to the improvement of hydrogen storage properties of the microwaves dehydrogenated MgH2 – 10 wt.% CFs mixture. In addition, the hydrogenated MgH2 – 10 wt.% CFs mixture show reproducible and better microwave-assisted dehydriding reaction during second microwaves cycle.
dc.language.isoen
dc.publisherElsevier
dc.subject.enHydrogen absorbing materials
dc.subject.enMetal hydride
dc.subject.enGas–solid reactions
dc.subject.enKinetics
dc.title.enEffect of microwave irradiation on hydrogen sorption properties of hand mixed MgH2 – 10 wt.% carbon fibers
dc.typeArticle de revue
dc.identifier.doi10.1016/j.jallcom.2016.03.008
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Alloys and Compounds
bordeaux.page1-8
bordeaux.volume676
bordeaux.peerReviewedoui
hal.identifierhal-01307712
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01307712v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Alloys%20and%20Compounds&rft.date=2016&rft.volume=676&rft.spage=1-8&rft.epage=1-8&rft.eissn=0925-8388&rft.issn=0925-8388&rft.au=AWAD,%20Abdel%20Salam&NAKHL,%20Michel&ZAKHOUR,%20Mirvat&SANTOS,%20S.%20F.&SOUZA,%20F.%20L.&rft.genre=article


Archivos en el ítem

ArchivosTamañoFormatoVer

No hay archivos asociados a este ítem.

Este ítem aparece en la(s) siguiente(s) colección(ones)

Mostrar el registro sencillo del ítem