Solvent Extraction Behavior of Neptunium (IV) Ions between Nitric Acid and Diluted 30% Tri-butyl Phosphate in the Presence of Simple Hydroxamic Acids

Formo- and aceto-hydroxamic acids are very effective reagents for stripping tetravalent actinide ions such as Np(IV) and Pu(IV) ions from a tri-butyl phosphate phase into nitric acid. Distribution data for Np(IV) in the presence of these hydroxamate ions have now been accumulated and trends establis...

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Published in:Solvent extraction and ion exchange 2008-01, Vol.26 (1), p.41-61
Main Authors: Taylor, R. J., Sinkov, S. I., Choppin, G. R., May, I.
Format: Article
Language:English
Subjects:
acetohydroxamic acid
actinide separations
Advanced Purex
AFFINITY
distribution coefficient
Formohydroxamic acid
HYDROXAMIC ACIDS
NEPTUNIUM
NITRIC ACID
NUCLEAR FUEL CYCLE AND FUEL MATERIALS
RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
SOLVENT EXTRACTION
stability constant
TBP
VALENCE
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cited_by cdi_FETCH-LOGICAL-c403t-446895ec0d0b8d87104996aae15b29f22807edc525371b4ba1b4e5236a012ef13
cites cdi_FETCH-LOGICAL-c403t-446895ec0d0b8d87104996aae15b29f22807edc525371b4ba1b4e5236a012ef13
container_end_page 61
container_issue 1
container_start_page 41
container_title Solvent extraction and ion exchange
container_volume 26
creator Taylor, R. J.
Sinkov, S. I.
Choppin, G. R.
May, I.
description Formo- and aceto-hydroxamic acids are very effective reagents for stripping tetravalent actinide ions such as Np(IV) and Pu(IV) ions from a tri-butyl phosphate phase into nitric acid. Distribution data for Np(IV) in the presence of these hydroxamate ions have now been accumulated and trends established. Stability constants for aceto-hydroxamate complexes of Np(IV) and Np(V) ions have also been determined in a perchlorate medium, and these reaffirm the affinity of hydroxamate ligands for actinide (IV) ions over actinyl (V,VI) ions.
doi_str_mv 10.1080/07366290701784159
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source Taylor and Francis Science and Technology Collection
subjects acetohydroxamic acid
actinide separations
Advanced Purex
AFFINITY
distribution coefficient
Formohydroxamic acid
HYDROXAMIC ACIDS
NEPTUNIUM
NITRIC ACID
NUCLEAR FUEL CYCLE AND FUEL MATERIALS
RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
SOLVENT EXTRACTION
stability constant
TBP
VALENCE
title Solvent Extraction Behavior of Neptunium (IV) Ions between Nitric Acid and Diluted 30% Tri-butyl Phosphate in the Presence of Simple Hydroxamic Acids
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