Method for the production of α-alane
US7238336B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2006 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Jan 9, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B6/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of forming α-alane. The method includes reacting aluminum trichloride and an alkali metal hydride to form an alane-ether complex solution. An aqueous diethyl ether solution is optionally added to the alane-ether complex solution to form a partially hydrolyzed ether/alane-ether complex solution. A solution of a first crystallization additive is added to the alane-ether complex solution or to the aqueous ether/alane-ether complex solution to form a crystallization solution. The first crystallization additive is selected from the group consisting of polystyrene, polybutadiene, polystyrene-co-polybutadiene, polyisoprene, poly-alpha-methylstyrene, polystyrene-co-polyindene, poly-alpha-pinene, and mixtures thereof. Optionally, a second crystallization additive is added to the crystallization solution. The second crystallization additive is selected from the group consisting of squalene, cyclododecatriene, norbornylene, norbornadiene, a phenyl terminated polybutadiene, 2,4-dimethyl anisole, 3,5-dimethyl anisole, 2,6-dimethyl anisole, polydimethyl siloxane, and mixtures thereof. Solvents are removed from the crystallization solution to crystallize the α-alane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.