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A preliminary study of the hydrolysis of hydroxamic acid complexants in the presence of oxidising metal ions

Andrieux, Fabrice P. L. and Boxall, Colin and May, Iain and Taylor, Robin J. (2010) A preliminary study of the hydrolysis of hydroxamic acid complexants in the presence of oxidising metal ions. IOP Conference Series: Materials Science and Engineering, 9 (1). -. ISSN 1757-899X

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Abstract

Simple hydroxamic acids (XHAs) are salt free, organic compounds with affinities for cations such as Np4+, Pu4+ and Fe3+. As such they have been identified 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. Acid catalyzed hydrolysis of free XHAs is well known and may impact negatively on reprocessing applications. The hydrolysis of metal-bound XHAs within metal ion-XHA complexes is less understood. Using a model derived for the study of hydroxamic acid hydrolysis in the presence of non-oxidising metal ions (Np (IV) and Fe(III)), we review data pertaining to the hydrolysis of hydroxamic acids in the presence of the oxidising Pu4+ ion, under conditions where the influence of the redox processes may potentially be neglected.

Item Type: Article
Journal or Publication Title: IOP Conference Series: Materials Science and Engineering
Uncontrolled Keywords: NEPTUNIUM
Subjects: UNSPECIFIED
Departments: Faculty of Science and Technology > Engineering
ID Code: 52998
Deposited By: ep_importer_pure
Deposited On: 05 Mar 2012 13:40
Refereed?: Yes
Published?: Published
Last Modified: 09 Apr 2014 23:13
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/52998

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