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Title: Thermodynamic and structural description of europium complexation in 1-octanol solution

Abstract

Polydentate N-bearing ligands such as bis-triazinyl-pyridines (BTPS) are interesting extractants for actinide(III)/lanthanide(III) separation. A description of europium complexation in 1-octanol solutions was undertaken to enhance the knowledge of the extraction mechanisms. Time- Resolved Laser-Induced Fluorescence (TRLIF) spectroscopy allows determination of the first solvation shell for europium(III) nitrate, chloride, and perchlorate with different amounts of water. Europium nitrate complexation by iPr-BTP was then studied by TRLIF and microcalorimetry; the stability constant related to the formation of Eu(BTP){sub 3}{sup 3+} is similar by both techniques (log {beta}{sub 3} = 11.3 {+-} 0.5). The difference of solvation of the cation seems to have an influence on the thermodynamic properties related to the complexation with organic ligands. (authors)

Authors:
; ; ;  [1];  [2]
  1. CEA Valrho Marcoule, DEN/DRCP/SCPS/LCAT, BP 17171, 30207 Bagnols-sur-Ceze (France)
  2. Laboratoire de Chimie Physique, IPHC, 25 rue Becquerel, 67087 Strasbourg (France)
Publication Date:
Research Org.:
Chemical Sciences Division, Oak Ridge National Laboratory (United States)
OSTI Identifier:
21230395
Resource Type:
Conference
Resource Relation:
Conference: ISEC 2008: International Solvent Extraction Conference on Solvent Extraction: Fundamentals to Industrial Applications, Tucson, AZ (United States), 15-19 Sep 2008; Other Information: Country of input: France; 9 refs; Related Information: In: Proceedings of ISEC 2008, International Solvent Extraction Conference - Solvent Extraction: Fundamentals to Industrial Applications, by Moyer, Bruce A. (ed.), 1740 pages.
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 07 ISOTOPES AND RADIATION SOURCES; ACTINIDES; CALORIMETRY; CHLORIDES; EUROPIUM COMPLEXES; EUROPIUM NITRATES; FLUORESCENCE; LIGANDS; PERCHLORATES; PYRIDINES; SOLUTIONS; SOLVATION; SOLVENT EXTRACTION; SPECTROSCOPY; THERMODYNAMIC PROPERTIES

Citation Formats

Charbonnel, M.C., Vu, T.H., Boubals, N., Couston, L., and Arnaud, F. Thermodynamic and structural description of europium complexation in 1-octanol solution. United States: N. p., 2008. Web.
Charbonnel, M.C., Vu, T.H., Boubals, N., Couston, L., & Arnaud, F. Thermodynamic and structural description of europium complexation in 1-octanol solution. United States.
Charbonnel, M.C., Vu, T.H., Boubals, N., Couston, L., and Arnaud, F. Tue . "Thermodynamic and structural description of europium complexation in 1-octanol solution". United States. doi:.
@article{osti_21230395,
title = {Thermodynamic and structural description of europium complexation in 1-octanol solution},
author = {Charbonnel, M.C. and Vu, T.H. and Boubals, N. and Couston, L. and Arnaud, F.},
abstractNote = {Polydentate N-bearing ligands such as bis-triazinyl-pyridines (BTPS) are interesting extractants for actinide(III)/lanthanide(III) separation. A description of europium complexation in 1-octanol solutions was undertaken to enhance the knowledge of the extraction mechanisms. Time- Resolved Laser-Induced Fluorescence (TRLIF) spectroscopy allows determination of the first solvation shell for europium(III) nitrate, chloride, and perchlorate with different amounts of water. Europium nitrate complexation by iPr-BTP was then studied by TRLIF and microcalorimetry; the stability constant related to the formation of Eu(BTP){sub 3}{sup 3+} is similar by both techniques (log {beta}{sub 3} = 11.3 {+-} 0.5). The difference of solvation of the cation seems to have an influence on the thermodynamic properties related to the complexation with organic ligands. (authors)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 01 00:00:00 EDT 2008},
month = {Tue Jul 01 00:00:00 EDT 2008}
}

Conference:
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  • This paper presents a brief introduction of the studies of actinide complexation in solution at Lawrence Berkeley National Laboratory. An integrated approach of thermodynamic measurements and structural characterization is taken to obtain fundamental understanding of actinide complexation in solution that is of importance in predicting the behavior of actinides in separation processes and environmental transport.
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