Preparation of amine alanes and lithium aluminum tetrahydride
US4957726A · kind A · utility
5Cited by
16References
25Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 12, 1989 |
| Grant date | Sep 18, 1990 |
| Priority date | — |
| Expiry date | Apr 12, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B6/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Lithium aluminum hydride reacts with a tertiary amine to produce an amine alane and Li.sub.3 AlH.sub.6. Lithium values are recycled by reacting Li.sub.3 AlH.sub.6 with aluminum and hydrogen to produce LiAlH.sub.4. Since no metal halide by-product is produced in the first step, it has an advantage over other routes. The amine alane can react with SiF.sub.4 to produce silane and AlF.sub.3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.