Novel solid-state synthesis of halide free alane
The traditional aluminum hydride (alane, AlH3) synthesis involves reacting AlCl3 and LiAlH4 in diethyl ether, resulting in the formation of the alane etherate adduct, AlH3·h[(C2H5)2O]. The desired crystallized, stable a-AlH3 can only be obtained by either extensive vacuum distillation and heating of...
| Main Authors: | , , , , |
|---|---|
| Format: | Conference Paper |
| Published: |
AMER CHEMICAL SOC
2012
|
| Online Access: | http://hdl.handle.net/20.500.11937/36124 |
| _version_ | 1848754682467450880 |
|---|---|
| author | Knight, D. Dinh, L. Paskevicius, M. Buckley, Craig Zidan, R. |
| author_facet | Knight, D. Dinh, L. Paskevicius, M. Buckley, Craig Zidan, R. |
| author_sort | Knight, D. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The traditional aluminum hydride (alane, AlH3) synthesis involves reacting AlCl3 and LiAlH4 in diethyl ether, resulting in the formation of the alane etherate adduct, AlH3·h[(C2H5)2O]. The desired crystallized, stable a-AlH3 can only be obtained by either extensive vacuum distillation and heating of the etherate or by a crystallization process involving a large, heated bath of a benzene/toluene solution. These processes tend to be costly due to the several hours of vacuum pumping and/or heating required as well as dangerously using large amounts of flamable, toxic solvents. It is demonstrated here that a-AlH3 can be obtained by simply mixing AlCl3 and LiAlH4 in the solid state and slowly heating to 75° C. The a-AlH3 product can be washed with minimal solvents to remove the LiCl bi-product, leading to zero formation of any alane adducted materials. Although simple mixing and heating the reactants can provide a 40% yield of alane, the application of moderate pressure while heating increases this yield to over 60 % of cvrystalline a-AlH3. |
| first_indexed | 2025-11-14T08:44:17Z |
| format | Conference Paper |
| id | curtin-20.500.11937-36124 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:44:17Z |
| publishDate | 2012 |
| publisher | AMER CHEMICAL SOC |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-361242018-12-14T00:52:35Z Novel solid-state synthesis of halide free alane Knight, D. Dinh, L. Paskevicius, M. Buckley, Craig Zidan, R. The traditional aluminum hydride (alane, AlH3) synthesis involves reacting AlCl3 and LiAlH4 in diethyl ether, resulting in the formation of the alane etherate adduct, AlH3·h[(C2H5)2O]. The desired crystallized, stable a-AlH3 can only be obtained by either extensive vacuum distillation and heating of the etherate or by a crystallization process involving a large, heated bath of a benzene/toluene solution. These processes tend to be costly due to the several hours of vacuum pumping and/or heating required as well as dangerously using large amounts of flamable, toxic solvents. It is demonstrated here that a-AlH3 can be obtained by simply mixing AlCl3 and LiAlH4 in the solid state and slowly heating to 75° C. The a-AlH3 product can be washed with minimal solvents to remove the LiCl bi-product, leading to zero formation of any alane adducted materials. Although simple mixing and heating the reactants can provide a 40% yield of alane, the application of moderate pressure while heating increases this yield to over 60 % of cvrystalline a-AlH3. 2012 Conference Paper http://hdl.handle.net/20.500.11937/36124 AMER CHEMICAL SOC restricted |
| spellingShingle | Knight, D. Dinh, L. Paskevicius, M. Buckley, Craig Zidan, R. Novel solid-state synthesis of halide free alane |
| title | Novel solid-state synthesis of halide free alane |
| title_full | Novel solid-state synthesis of halide free alane |
| title_fullStr | Novel solid-state synthesis of halide free alane |
| title_full_unstemmed | Novel solid-state synthesis of halide free alane |
| title_short | Novel solid-state synthesis of halide free alane |
| title_sort | novel solid-state synthesis of halide free alane |
| url | http://hdl.handle.net/20.500.11937/36124 |