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Modelling the Hydrolysis of Actinide Complexed Hydroxamic Acid Ligands

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNConference contribution/Paperpeer-review

Published

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Modelling the Hydrolysis of Actinide Complexed Hydroxamic Acid Ligands. / Andrieux, Fabrice; Boxall, Colin; Taylor, Robin; Mason, C.

RSC Special Publication: Recent Advances in Actinide Science. ed. / Iain May; Rebeca Alvares; Nicholas Bryan. Vol. 305 Cambridge : Royal Society of Chemistry, 2006. p. 626-628.

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNConference contribution/Paperpeer-review

Harvard

Andrieux, F, Boxall, C, Taylor, R & Mason, C 2006, Modelling the Hydrolysis of Actinide Complexed Hydroxamic Acid Ligands. in I May, R Alvares & N Bryan (eds), RSC Special Publication: Recent Advances in Actinide Science. vol. 305, Royal Society of Chemistry, Cambridge, pp. 626-628. <http://pubs.rsc.org/en/content/ebook/978-0-85404-678-2>

APA

Andrieux, F., Boxall, C., Taylor, R., & Mason, C. (2006). Modelling the Hydrolysis of Actinide Complexed Hydroxamic Acid Ligands. In I. May, R. Alvares, & N. Bryan (Eds.), RSC Special Publication: Recent Advances in Actinide Science (Vol. 305, pp. 626-628). Royal Society of Chemistry. http://pubs.rsc.org/en/content/ebook/978-0-85404-678-2

Vancouver

Andrieux F, Boxall C, Taylor R, Mason C. Modelling the Hydrolysis of Actinide Complexed Hydroxamic Acid Ligands. In May I, Alvares R, Bryan N, editors, RSC Special Publication: Recent Advances in Actinide Science. Vol. 305. Cambridge: Royal Society of Chemistry. 2006. p. 626-628

Author

Andrieux, Fabrice ; Boxall, Colin ; Taylor, Robin ; Mason, C. / Modelling the Hydrolysis of Actinide Complexed Hydroxamic Acid Ligands. RSC Special Publication: Recent Advances in Actinide Science. editor / Iain May ; Rebeca Alvares ; Nicholas Bryan. Vol. 305 Cambridge : Royal Society of Chemistry, 2006. pp. 626-628

Bibtex

@inproceedings{c9aa419d0bed4b91a04ea6c0b7927bf5,
title = "Modelling the Hydrolysis of Actinide Complexed Hydroxamic Acid Ligands",
abstract = "The separation of U from Np and Pu are major stages in the Purex process. Simple hydroxamic acids (XHA) are salt free, hydrophilic organic compounds, RCONHOH, with affinities for cations such as Fe3+, Np4+ and Pu4+. They are also redox active, capable of reducing a range of metal ions e.g. Np(VI) to Np(V). These two properties have led to them being identified as useful reagents for the control of Pu and Np in an Advanced Purex process. The kinetics of the acid hydrolysis of free formo- (FHA) and acetohydroxamic (AHA) acids to hydroxylamine and the parent carboxylic acid are well known. Hydrolysis of hydroxamates bound to metal ions also occurs and preliminary studies have shown that the Pu(IV)-FHA and AHA complexes are slowly reduced to free Pu(III) ions. An understanding of these processes is vital if they are to be controlled within the design of an Advanced Purex process. To this end, we have used UV-visible & nIR spectrophotometry to study and theoretically model the kinetics of the hydrolysis of metal-HA systems in nitrate media – Fe3+ / AHA (as a non-active analogue); Np4+ / FHA, Np4+/AHA – wherein the metal ion complexes with, but does not oxidise the ligand.",
author = "Fabrice Andrieux and Colin Boxall and Robin Taylor and C. Mason",
year = "2006",
language = "English",
isbn = "978-0-85404-678-2",
volume = "305",
pages = "626--628",
editor = "Iain May and Rebeca Alvares and Nicholas Bryan",
booktitle = "RSC Special Publication",
publisher = "Royal Society of Chemistry",

}

RIS

TY - GEN

T1 - Modelling the Hydrolysis of Actinide Complexed Hydroxamic Acid Ligands

AU - Andrieux, Fabrice

AU - Boxall, Colin

AU - Taylor, Robin

AU - Mason, C.

PY - 2006

Y1 - 2006

N2 - The separation of U from Np and Pu are major stages in the Purex process. Simple hydroxamic acids (XHA) are salt free, hydrophilic organic compounds, RCONHOH, with affinities for cations such as Fe3+, Np4+ and Pu4+. They are also redox active, capable of reducing a range of metal ions e.g. Np(VI) to Np(V). These two properties have led to them being identified as useful reagents for the control of Pu and Np in an Advanced Purex process. The kinetics of the acid hydrolysis of free formo- (FHA) and acetohydroxamic (AHA) acids to hydroxylamine and the parent carboxylic acid are well known. Hydrolysis of hydroxamates bound to metal ions also occurs and preliminary studies have shown that the Pu(IV)-FHA and AHA complexes are slowly reduced to free Pu(III) ions. An understanding of these processes is vital if they are to be controlled within the design of an Advanced Purex process. To this end, we have used UV-visible & nIR spectrophotometry to study and theoretically model the kinetics of the hydrolysis of metal-HA systems in nitrate media – Fe3+ / AHA (as a non-active analogue); Np4+ / FHA, Np4+/AHA – wherein the metal ion complexes with, but does not oxidise the ligand.

AB - The separation of U from Np and Pu are major stages in the Purex process. Simple hydroxamic acids (XHA) are salt free, hydrophilic organic compounds, RCONHOH, with affinities for cations such as Fe3+, Np4+ and Pu4+. They are also redox active, capable of reducing a range of metal ions e.g. Np(VI) to Np(V). These two properties have led to them being identified as useful reagents for the control of Pu and Np in an Advanced Purex process. The kinetics of the acid hydrolysis of free formo- (FHA) and acetohydroxamic (AHA) acids to hydroxylamine and the parent carboxylic acid are well known. Hydrolysis of hydroxamates bound to metal ions also occurs and preliminary studies have shown that the Pu(IV)-FHA and AHA complexes are slowly reduced to free Pu(III) ions. An understanding of these processes is vital if they are to be controlled within the design of an Advanced Purex process. To this end, we have used UV-visible & nIR spectrophotometry to study and theoretically model the kinetics of the hydrolysis of metal-HA systems in nitrate media – Fe3+ / AHA (as a non-active analogue); Np4+ / FHA, Np4+/AHA – wherein the metal ion complexes with, but does not oxidise the ligand.

M3 - Conference contribution/Paper

SN - 978-0-85404-678-2

VL - 305

SP - 626

EP - 628

BT - RSC Special Publication

A2 - May, Iain

A2 - Alvares, Rebeca

A2 - Bryan, Nicholas

PB - Royal Society of Chemistry

CY - Cambridge

ER -