Home > Research > Publications & Outputs > Oxidation-reduction reactions of simple hydroxa...

Electronic data

  • ract.2008.1502

    Final published version, 1.04 MB, PDF document

    Available under license: CC BY-NC-ND

Links

Text available via DOI:

View graph of relations

Oxidation-reduction reactions of simple hydroxamic acids and plutonium(IV) ions in nitric acid

Research output: Contribution to journalJournal articlepeer-review

Published

Standard

Oxidation-reduction reactions of simple hydroxamic acids and plutonium(IV) ions in nitric acid. / Carrott, M. J.; Fox, O. D.; LeGurun, G.; JONES, C J ; Mason, C.; Taylor, Robin; Andrieux, Fabrice; Boxall, Colin.

In: Radiochimica Acta, Vol. 96, No. 6, 31.03.2008, p. 333-343.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Carrott, MJ, Fox, OD, LeGurun, G, JONES, CJ, Mason, C, Taylor, R, Andrieux, F & Boxall, C 2008, 'Oxidation-reduction reactions of simple hydroxamic acids and plutonium(IV) ions in nitric acid', Radiochimica Acta, vol. 96, no. 6, pp. 333-343. https://doi.org/10.1524/ract.2008.1502

APA

Carrott, M. J., Fox, O. D., LeGurun, G., JONES, C. J., Mason, C., Taylor, R., Andrieux, F., & Boxall, C. (2008). Oxidation-reduction reactions of simple hydroxamic acids and plutonium(IV) ions in nitric acid. Radiochimica Acta, 96(6), 333-343. https://doi.org/10.1524/ract.2008.1502

Vancouver

Carrott MJ, Fox OD, LeGurun G, JONES CJ, Mason C, Taylor R et al. Oxidation-reduction reactions of simple hydroxamic acids and plutonium(IV) ions in nitric acid. Radiochimica Acta. 2008 Mar 31;96(6):333-343. https://doi.org/10.1524/ract.2008.1502

Author

Carrott, M. J. ; Fox, O. D. ; LeGurun, G. ; JONES, C J ; Mason, C. ; Taylor, Robin ; Andrieux, Fabrice ; Boxall, Colin. / Oxidation-reduction reactions of simple hydroxamic acids and plutonium(IV) ions in nitric acid. In: Radiochimica Acta. 2008 ; Vol. 96, No. 6. pp. 333-343.

Bibtex

@article{5dbbfd67aa454a2380112a8dd5a53a8d,
title = "Oxidation-reduction reactions of simple hydroxamic acids and plutonium(IV) ions in nitric acid",
abstract = "Simple hydroxamic acids such as formo- and aceto-hydroxamic acids have been proposed as suitable reagents for the separation of either Pu and/or Np from U in modified or single cycle Purex based solvent extraction processes designed to meet the emerging requirements of advanced fuel cycles. The stability of these hydroxamic acids is dominated by their decomposition through acid hydrolysis. Kinetic studies of the acid hydrolysis of formo- and acetohydroxamic acids are reported in the absence and the presence of Pu(IV) ions. The slow reduction of these plutonium(IV) hydroxamate complexes to Pu(III) aquo-ions has been characterised by spectrophotometry and cyclic voltammetry. The reductions of Pu(IV) in the presence of FHA and AHA are consistent with a mechanism in which free hydroxamic acid in solution is hydrolysed whilst Pu(IV) ions remain fully complexed to hydroxamate ligands; then at some point close to a 1 : 1 Pu(IV) : XHA ratio, some free Pu4+ is released from the complex and reduction is initiated. Electrochemical and kinetic data suggest that the reductant is the hydroxamic acid rather than the hydroxylamine.",
keywords = "Formohydroxamic acid, Acetohydroxamic acid , Advanced purex , Pu(IV) reduction , Hydrolysis , Electrochemistry , Actinide separations ",
author = "Carrott, {M. J.} and Fox, {O. D.} and G. LeGurun and JONES, {C J} and C. Mason and Robin Taylor and Fabrice Andrieux and Colin Boxall",
year = "2008",
month = mar,
day = "31",
doi = "10.1524/ract.2008.1502",
language = "English",
volume = "96",
pages = "333--343",
journal = "Radiochimica Acta",
issn = "0033-8230",
publisher = "R. Oldenbourg",
number = "6",

}

RIS

TY - JOUR

T1 - Oxidation-reduction reactions of simple hydroxamic acids and plutonium(IV) ions in nitric acid

AU - Carrott, M. J.

AU - Fox, O. D.

AU - LeGurun, G.

AU - JONES, C J

AU - Mason, C.

AU - Taylor, Robin

AU - Andrieux, Fabrice

AU - Boxall, Colin

PY - 2008/3/31

Y1 - 2008/3/31

N2 - Simple hydroxamic acids such as formo- and aceto-hydroxamic acids have been proposed as suitable reagents for the separation of either Pu and/or Np from U in modified or single cycle Purex based solvent extraction processes designed to meet the emerging requirements of advanced fuel cycles. The stability of these hydroxamic acids is dominated by their decomposition through acid hydrolysis. Kinetic studies of the acid hydrolysis of formo- and acetohydroxamic acids are reported in the absence and the presence of Pu(IV) ions. The slow reduction of these plutonium(IV) hydroxamate complexes to Pu(III) aquo-ions has been characterised by spectrophotometry and cyclic voltammetry. The reductions of Pu(IV) in the presence of FHA and AHA are consistent with a mechanism in which free hydroxamic acid in solution is hydrolysed whilst Pu(IV) ions remain fully complexed to hydroxamate ligands; then at some point close to a 1 : 1 Pu(IV) : XHA ratio, some free Pu4+ is released from the complex and reduction is initiated. Electrochemical and kinetic data suggest that the reductant is the hydroxamic acid rather than the hydroxylamine.

AB - Simple hydroxamic acids such as formo- and aceto-hydroxamic acids have been proposed as suitable reagents for the separation of either Pu and/or Np from U in modified or single cycle Purex based solvent extraction processes designed to meet the emerging requirements of advanced fuel cycles. The stability of these hydroxamic acids is dominated by their decomposition through acid hydrolysis. Kinetic studies of the acid hydrolysis of formo- and acetohydroxamic acids are reported in the absence and the presence of Pu(IV) ions. The slow reduction of these plutonium(IV) hydroxamate complexes to Pu(III) aquo-ions has been characterised by spectrophotometry and cyclic voltammetry. The reductions of Pu(IV) in the presence of FHA and AHA are consistent with a mechanism in which free hydroxamic acid in solution is hydrolysed whilst Pu(IV) ions remain fully complexed to hydroxamate ligands; then at some point close to a 1 : 1 Pu(IV) : XHA ratio, some free Pu4+ is released from the complex and reduction is initiated. Electrochemical and kinetic data suggest that the reductant is the hydroxamic acid rather than the hydroxylamine.

KW - Formohydroxamic acid

KW - Acetohydroxamic acid

KW - Advanced purex

KW - Pu(IV) reduction

KW - Hydrolysis

KW - Electrochemistry

KW - Actinide separations

U2 - 10.1524/ract.2008.1502

DO - 10.1524/ract.2008.1502

M3 - Journal article

VL - 96

SP - 333

EP - 343

JO - Radiochimica Acta

JF - Radiochimica Acta

SN - 0033-8230

IS - 6

ER -