NIOBIUM-TANTALUM SEPARATION
Abstract
The usual method for the separation of tantalum and niobium consists of a selective solvent extraction from an aqueous hydrofluoric acid solution of the metals. A difficulty encountered in this process is the fact that the corrosion problems associated with hydrofluoric acid are serious. It has been found that the corrosion caused by the hydrofluoric acid may be substantially reduced by adding to the acidic solution an amine, such as phenyl diethanolamine or aniline, and adjusting pH value to between 4 and 6.
- Inventors:
- Issue Date:
- Research Org.:
- Originating Research Org. not identified
- OSTI Identifier:
- 4261332
- Patent Number(s):
- 2871092
- Assignee:
- U.S. Atomic Energy Commission
- Patent Classifications (CPCs):
-
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- NSA Number:
- NSA-13-013318
- Resource Type:
- Patent
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-59
- Country of Publication:
- United States
- Language:
- English
- Subject:
- CHEMISTRY; ACIDITY; AMINES; CORROSION PROTECTION; ETHANOL; HYDROFLUORIC ACID; NIOBIUM; PHENYL RADICALS; SEPARATION PROCESSES; SOLUTIONS; SOLVENT EXTRACTION; TANTALUM
Citation Formats
Wilhelm, H A, and Foos, R A. NIOBIUM-TANTALUM SEPARATION. United States: N. p., 1959.
Web.
Wilhelm, H A, & Foos, R A. NIOBIUM-TANTALUM SEPARATION. United States.
Wilhelm, H A, and Foos, R A. Tue .
"NIOBIUM-TANTALUM SEPARATION". United States.
@article{osti_4261332,
title = {NIOBIUM-TANTALUM SEPARATION},
author = {Wilhelm, H A and Foos, R A},
abstractNote = {The usual method for the separation of tantalum and niobium consists of a selective solvent extraction from an aqueous hydrofluoric acid solution of the metals. A difficulty encountered in this process is the fact that the corrosion problems associated with hydrofluoric acid are serious. It has been found that the corrosion caused by the hydrofluoric acid may be substantially reduced by adding to the acidic solution an amine, such as phenyl diethanolamine or aniline, and adjusting pH value to between 4 and 6.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1959},
month = {1}
}
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