Ammonium dodecamolybdomolybdate and method of making

Details Ammonium dodecamolybdomolybdate and method of making Ammonium dodecamolybdomolybdate and method of making

2007-11-27

2007-11-27

Langel, Wayne A. (Department: 1754)

Specialized metallurgical processes, compositions for use therei

Processes

Producing or purifying free metal powder or producing or...

C423S440000

Reexamination Certificate

active

10931910

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.

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Singh et al.,Synthesis of Dodecamolybdoantimonate(V)Salts containing the Keggin Structure, J. Chem. Soc. Dalton Trans. (1990) 947-951, no month.

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