Purification method for producing high purity niobium...

Details Purification method for producing high purity niobium... Purification method for producing high purity niobium...

2007-05-08

2007-05-08

Nguyen, Ngoc-Yen (Department: 1754)

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

C423S472000, C423S464000, C423S594800, C423S064000, C423S065000, C423S068000

Reexamination Certificate

active

10505803

ABSTRACT:
An object of the present invention is to provide a method for purifying a highly pure niobium compound and/or tantalum compound, the method enabling the purification of a highly pure niobium compound and tantalum compound in a simplified manner at a low cost. The object is met by providing a method comprising adding an organic solvent to an aqueous solution containing a niobium compound and/or tantalum compound together with impurities, and then performing extraction via the solution. A niobium compound and/or tantalum compound dissolved in a solution is allowed to precipitate, and said aqueous solution is obtained by dissolving the precipitate in water.

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