METHOD OF PRODUCTION OF TANTALUM HYDROXIDE Russian patent published in 2008 - IPC C01G35/00 

FIELD: chemical industry; electronic industry; other industries; methods of production of tantalum hydroxide.

SUBSTANCE: the invention is pertaining to the synthesis of the inorganic compounds, in particular, to the method of production of tantalum hydroxide and may be used for manufacture of the materials used in the computer, electronic and optoelectronic equipment. The method of production of tantalum hydroxide provides for treatment of the tantalum pentachloride with the ammonia solution, decantation of the solution, filtration and drying of the sediment. The treatment of the tantalum pentachloride is conducted using the ammonia solution with concentration of 6.0-9.5 mole/l at the ratio of the volumes of the solid and liquid phases of 1:(3-5). The technical result of the invention is simplification of the process of production of tantalum hydroxide with the increased content of the tantalum pentaoxide, the low content of the chloride-ion and the increased specific surface of the produced hydroxide.

EFFECT: the invention ensures simplification of the process of production of tantalum hydroxide with the increased content of the tantalum pentaoxide, the low content of the chloride-ion and the increased specific surface of the produced hydroxide.

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