skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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 DTIE; NSA-13-013318
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}
}