Ammonium dodecamolybdomolybdate and method of making
US6793907B1 · kind B1 · utility
7Cited by
5References
7Claims
0Family size
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Key dates
| Filing date | Jul 29, 2002 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Apr 28, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2002/86
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A novel molybdenum compound, ammonium dodecamolybdomolybdate (AMM), is described which may be used in the manufacture of molybdenum metal and molybdenum carbide powders. The molybdenum compound is a dodecaheteropoly acid salt having a Keggin-type structure wherein molybdenum resides in both the hetero as well as peripheral atomic positions. The novel compound has the general formula (NH4)2Mo12MoO40.6H2O. Because of its low solubility, the compound can be crystallized efficiently and at a high purity from ammonium molybdate solutions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.