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Synthesis of amorphous Mg(BH4)(2) from MgB2 and H-2 at room temperature

Pistidda, Claudio; Garroni, Sebastiano; Dolci, Francesco; Bardaji, Elisa Gil; Khandelwal, Ashish; Nolis, Pau; Dornheim, Martin; Gosalawit, Rapee; Jensen, Torben and Cerenius, Yngve LU , et al. (2010) In Journal of Alloys and Compounds 508(1). p.212-215
Abstract
Due to its high hydrogen content and its favourable overall thermodynamics magnesium tetrahydroborate has been considered interesting for hydrogen storage applications. In this work we show that unsolvated amorphous magnesium tetrahydroborate can be obtained by reactive ball milling of commercial MgB2 under 100 bar hydrogen atmosphere. The material was characterized by solid-state NMR which showed the characteristic features of Mg(BH4)(2), together with those of higher borohydride species. High pressure DSC and TPD-MS showed thermal behaviour similar to that of Mg(BH4)(2) but with broadened signals. In situ synchrotron X-ray powder diffraction confirmed the amorphous state of the material and showed the typical crystalline decomposition... (More)
Due to its high hydrogen content and its favourable overall thermodynamics magnesium tetrahydroborate has been considered interesting for hydrogen storage applications. In this work we show that unsolvated amorphous magnesium tetrahydroborate can be obtained by reactive ball milling of commercial MgB2 under 100 bar hydrogen atmosphere. The material was characterized by solid-state NMR which showed the characteristic features of Mg(BH4)(2), together with those of higher borohydride species. High pressure DSC and TPD-MS showed thermal behaviour similar to that of Mg(BH4)(2) but with broadened signals. In situ synchrotron X-ray powder diffraction confirmed the amorphous state of the material and showed the typical crystalline decomposition products of Mg(BH4)(2) at elevated temperatures. (C) 2010 Elsevier B.V. All rights reserved. (Less)
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subject
keywords
Synchrotron, NMR, Borohydrides, Hydrogen storage, Reactive milling, X-ray diffraction, DSC, TPD
in
Journal of Alloys and Compounds
volume
508
issue
1
pages
212 - 215
publisher
Elsevier
external identifiers
  • wos:000283903400040
  • scopus:77957377550
ISSN
0925-8388
DOI
10.1016/j.jallcom.2010.07.226
language
English
LU publication?
yes
id
22e3818b-9577-49ca-9199-48eadfdc899b (old id 1752177)
date added to LUP
2010-12-29 17:20:00
date last changed
2018-06-03 04:03:30
@article{22e3818b-9577-49ca-9199-48eadfdc899b,
  abstract     = {Due to its high hydrogen content and its favourable overall thermodynamics magnesium tetrahydroborate has been considered interesting for hydrogen storage applications. In this work we show that unsolvated amorphous magnesium tetrahydroborate can be obtained by reactive ball milling of commercial MgB2 under 100 bar hydrogen atmosphere. The material was characterized by solid-state NMR which showed the characteristic features of Mg(BH4)(2), together with those of higher borohydride species. High pressure DSC and TPD-MS showed thermal behaviour similar to that of Mg(BH4)(2) but with broadened signals. In situ synchrotron X-ray powder diffraction confirmed the amorphous state of the material and showed the typical crystalline decomposition products of Mg(BH4)(2) at elevated temperatures. (C) 2010 Elsevier B.V. All rights reserved.},
  author       = {Pistidda, Claudio and Garroni, Sebastiano and Dolci, Francesco and Bardaji, Elisa Gil and Khandelwal, Ashish and Nolis, Pau and Dornheim, Martin and Gosalawit, Rapee and Jensen, Torben and Cerenius, Yngve and Surinach, Santiago and Dolors Baro, Maria and Lohstroh, Wiebke and Fichtner, Maximilian},
  issn         = {0925-8388},
  keyword      = {Synchrotron,NMR,Borohydrides,Hydrogen storage,Reactive milling,X-ray diffraction,DSC,TPD},
  language     = {eng},
  number       = {1},
  pages        = {212--215},
  publisher    = {Elsevier},
  series       = {Journal of Alloys and Compounds},
  title        = {Synthesis of amorphous Mg(BH4)(2) from MgB2 and H-2 at room temperature},
  url          = {http://dx.doi.org/10.1016/j.jallcom.2010.07.226},
  volume       = {508},
  year         = {2010},
}