Characterisation of mechanochemically synthesised alane (AlH3) nanoparticles
A mechanochemical synthesis process has been used to synthesise alane (AlH3) nanoparticles. The alane is synthesised via a chemical reaction between lithium alanate (LiAlH4) and aluminium chloride (AlCl3) at room temperature within a ball mill and at 77K within a cryogenic mill. The reaction product...
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| Format: | Journal Article |
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Elsevier B.V.
2009
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| Online Access: | http://hdl.handle.net/20.500.11937/44134 |
| _version_ | 1848756910178697216 |
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| author | Paskevicius, Mark Sheppard, Drew Buckley, Craig |
| author_facet | Paskevicius, Mark Sheppard, Drew Buckley, Craig |
| author_sort | Paskevicius, Mark |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A mechanochemical synthesis process has been used to synthesise alane (AlH3) nanoparticles. The alane is synthesised via a chemical reaction between lithium alanate (LiAlH4) and aluminium chloride (AlCl3) at room temperature within a ball mill and at 77K within a cryogenic mill. The reaction product formed consists of alane nanoparticles embedded within a lithium chloride (LiCl) by-product phase. The LiCl is washed with a solvent resulting in alane nanoparticles which are separated from the by-product phase but are kinetically stabilised by an amorphous particle surface layer. The synthesis of a particular alane structural phase is largely dependent on the milling conditions and two major phases (α, α′) as well as two minor phases (β, γ) have been identified. Ball milling at room temperature can also provide enough energy to allow alane to release hydrogen gas and form aluminium metal nanoparticles. A comparison between XRD and hydrogen desorption results suggest a non-crystalline AlH3 phase is present in the synthesised samples. |
| first_indexed | 2025-11-14T09:19:42Z |
| format | Journal Article |
| id | curtin-20.500.11937-44134 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:19:42Z |
| publishDate | 2009 |
| publisher | Elsevier B.V. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-441342017-09-13T15:57:24Z Characterisation of mechanochemically synthesised alane (AlH3) nanoparticles Paskevicius, Mark Sheppard, Drew Buckley, Craig Hydrogen storage materials X-ray diffraction Mechanochemical synthesis Nanostructures A mechanochemical synthesis process has been used to synthesise alane (AlH3) nanoparticles. The alane is synthesised via a chemical reaction between lithium alanate (LiAlH4) and aluminium chloride (AlCl3) at room temperature within a ball mill and at 77K within a cryogenic mill. The reaction product formed consists of alane nanoparticles embedded within a lithium chloride (LiCl) by-product phase. The LiCl is washed with a solvent resulting in alane nanoparticles which are separated from the by-product phase but are kinetically stabilised by an amorphous particle surface layer. The synthesis of a particular alane structural phase is largely dependent on the milling conditions and two major phases (α, α′) as well as two minor phases (β, γ) have been identified. Ball milling at room temperature can also provide enough energy to allow alane to release hydrogen gas and form aluminium metal nanoparticles. A comparison between XRD and hydrogen desorption results suggest a non-crystalline AlH3 phase is present in the synthesised samples. 2009 Journal Article http://hdl.handle.net/20.500.11937/44134 10.1016/j.jallcom.2009.07.124 Elsevier B.V. fulltext |
| spellingShingle | Hydrogen storage materials X-ray diffraction Mechanochemical synthesis Nanostructures Paskevicius, Mark Sheppard, Drew Buckley, Craig Characterisation of mechanochemically synthesised alane (AlH3) nanoparticles |
| title | Characterisation of mechanochemically synthesised alane (AlH3) nanoparticles |
| title_full | Characterisation of mechanochemically synthesised alane (AlH3) nanoparticles |
| title_fullStr | Characterisation of mechanochemically synthesised alane (AlH3) nanoparticles |
| title_full_unstemmed | Characterisation of mechanochemically synthesised alane (AlH3) nanoparticles |
| title_short | Characterisation of mechanochemically synthesised alane (AlH3) nanoparticles |
| title_sort | characterisation of mechanochemically synthesised alane (alh3) nanoparticles |
| topic | Hydrogen storage materials X-ray diffraction Mechanochemical synthesis Nanostructures |
| url | http://hdl.handle.net/20.500.11937/44134 |