Extraction of antimony and tantalum from aqueous fluoride solutions by n-octanol and tributyl phosphate

19 F and 21 Sb NMR spectroscopy and chemical analysis were used to study the composition and structure of fluoride complexes of antimony(V) and tantalum(V) in organic and aqueous phases in extraction by tributyl phosphate (TBP) and n -octanol. It is found that extraction from solutions containing a...

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Bibliographic Details
Published in:Russian journal of inorganic chemistry 2013-04, Vol.58 (4), p.474-480
Main Authors: Kirichenko, N. V., Nikolaev, A. I., Maiorov, V. G., Tyuremnov, A. V., Il’in, E. G.
Format: Article
Language:English
Subjects:
Antimony
Chemical analysis
Chemistry
Chemistry and Materials Science
Extraction
Fluorides
Inorganic Chemistry
NMR spectroscopy
Phases
Phosphates
Physical Chemistry of Solutions
Tantalum
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Summary:19 F and 21 Sb NMR spectroscopy and chemical analysis were used to study the composition and structure of fluoride complexes of antimony(V) and tantalum(V) in organic and aqueous phases in extraction by tributyl phosphate (TBP) and n -octanol. It is found that extraction from solutions containing a single element or both elements occurs via the hydrate-solvate mechanism. The possibility of separating tantalum(V) and antimony(V) by extraction from fluoride solutions is shown. The efficiency of tantalum(V) and antimony(V) separation by extraction from fluoride solutions is enhanced at a transition from TBP to n -octanol.
ISSN:0036-0236
1531-8613
DOI:10.1134/S0036023613040074