Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 288: Issue 3

Role of ligand softness and diluent on the separation behaviour of Am(III) and Eu(III)

Authors:
A. Bhattacharyya Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085 India

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P. Mohapatra Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085 India

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V. Manchanda Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085 India

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Pages:
709–716
Online Publication Date:
21 Feb 2011
Publication Date:
01 Jun 2011
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10967-011-1027-9
Keywords:
Separation; Cyanex-301; Synergism; Diluent effect
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Abstract  

Separation of trivalent actinides (An(III)) and lanthanides (Ln(III)) is a challenging task in the nuclear fuel cycle due to their similar charge and chemical behaviour. Some soft donor ligands show selectivity for An(III) over Ln(III) due to the formation of stronger covalent bonds with the former. The extraction behaviour of Am(III) and Eu(III) is studied in the present work with a mixture of Cyanex-301 (bis(2,4,4-trimethylpentyl)di-thiophosphinic acid) with several various ‘N’, ‘O’ or ‘S’ donor neutral ligands. Comparison of the data was done with that of the oxygen donor analogue of Cyanex-301, i.e. Cyanex-272 (bis(2,4,4-trimethylpentyl)phosphinic acid). Effect of the organic diluent on the extraction behaviour of Am(III) using Cyanex-301 in presence of ‘N’ donor synergists was also studied. Ab initio molecular orbital calculations were carried out using GAMESS software and charges on the donor atoms were calculated which helped in understanding the co-ordination chemistry of the ligands and explained the separation behaviour.

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Cover Journal of Radioanalytical and Nuclear Chemistry
Journal of Radioanalytical and Nuclear Chemistry
Print ISSN:
0236-5731
Online ISSN:
1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation		 1968
Volumes
per Year		 1
Issues
per Year		 12
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)

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