Sodium aluminum hydride production
US4528176A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1982 |
| Grant date | Jul 9, 1985 |
| Priority date | — |
| Expiry date | Dec 15, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B6/243
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for the production of alkali metal aluminum tetrahydrides from its elements by pressure hydrogenation, particularly characterized by production from an aluminum containing a reaction-promoting quantity of titanium, zirconium, hafnium, vanadium, niobium, or uranium. Titanium is preferred in a quantity of at least about 250 parts per part by weight aluminum. The process is preferably carried out on a semi-continuous basis in the presence of an alkali metal aluminate which is carried through to successive batches as an active heel. A novel composition of alkali metal aluminum tetrahydride in liquid reaction medium also containing alkali metal aluminate activator/catalyst. The alkali metal aluminate is preferably retained in a reaction heel for catalysis of subsequent reaction cycles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.