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| Naji, M. |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Kočí, Jan | Prague |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Ali, M. A. |
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| Rančić, M. |
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| Azevedo, Nuno Monteiro |
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Javadian, P.
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Publications (5/5 displayed)
- 20162LiBH4–MgH2 nanoconfined into carbon aerogel scaffold impregnated with ZrCl4 for reversible hydrogen storagecitations
- 2015Scandium functionalized carbon aerogel: Synthesis of nanoparticles and structure of a new ScOCl and properties of NaAlH4 as a function of pore sizecitations
- 2014Effective nanoconfinement of 2LiBH4–MgH2 via simply MgH2 premilling for reversible hydrogen storagescitations
- 20142LiBH4-MgH2-0.13TiCl4 confined in nanoporous structure of carbon aerogel scaffold for reversible hydrogen storagecitations
- 20142LiBH4-MgH2-0.13TiCl4 confined in nanoporous structure of carbon aerogel scaffold for reversible hydrogen storagecitations
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article
Scandium functionalized carbon aerogel: Synthesis of nanoparticles and structure of a new ScOCl and properties of NaAlH4 as a function of pore size
Abstract
A new method for scandium-functionalization of carbon aerogels forming nanoparticles of a new scandiumoxochloride, ScOCl is presented. Sodium aluminiumhydride, NaAlH 4 , is successfully melt infiltrated into the nano porous scaffolds with pore sizes of D max =7, 10, 13, 21, 26 and 39 nm, containing scandium based nano particles (<2.9 wt%) confirmed by elemental analysis and scanning electron microscopy. A systematic study of hydrogen storage properties of the nano composite materials is presented. An aqueous solution of ScCl 3 was initially infiltrated and formed nanoconfined [Sc(OH)(H 2 O) 52 Cl 4 H 2 O) 2which transforms to nanoparticles of a new scandium oxochloride, ScOCl at 192 °C and to Sc 2 O 3 at 420 °C. ScOCl crystallizes in an orthorhombic unit cell a=3.4409(8), b=3.9613(6) and c=8.178(2) Ā, space group Pmmn, and is built from layers of [ScO 4 Cl 2 ] octahedra forming neutral ScOCl layers. Temperature programmed desorption mass spectroscopy shows slightly improved kinetics for release of hydrogen with decreasing pore size. Continuous cycling of hydrogen release and uptake measured by the Sieverts' method reveal a larger preserved hydrogen storage capacity for scandium-functionalized aerogel with the larger pores (39 nm). © 2015 Elsevier Inc.