Tris-tetrafluorammonium hexafluoraluminate and its method of preparation
US4169132A · kind A · utility
1Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1978 |
| Grant date | Sep 25, 1979 |
| Priority date | — |
| Expiry date | Feb 21, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B21/083
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Tris-tetrafluorammonium hexafluoraluminate, (NF.sub.4).sub.3 AlF.sub.6, a new compound, is synthesized by forming a mixture of solid aluminum trichloride in a solution of a molar excess tetrafluorammonium bifluoride in anhydrous hydrogen fluoride, at a temperature of about -78.degree. C. or less. The mix is then rapidly heated to a temperature of about 40.degree. C. to the decomposition temperature of the product until all the solids dissolve. The solution containing the dissolved aluminum trichloride is evaporated under vacuum conditions to cause crystallization of (NF.sub.4).sub.3 AlF.sub.6.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.