Radiation Influencing of the Extraction Properties of the CyMe4-BTBP and CyMe4-BTPhen Solvents with FS-13

0466399 - ÚACH 2017 RIV NL eng C - Conference Paper (international conference)
Kondé, J. - Distler, P. - John, J. - Švehla, Jaroslav - Grüner, Bohumír - Bělčická, Zuzana
Radiation Influencing of the Extraction Properties of the CyMe4-BTBP and CyMe4-BTPhen Solvents with FS-13.
Procedia chemistry. Vol. 21. Amsterdam: Elsevier, 2016, s. 174-181. ISSN 1876-6196.
[ATALANTE 2016 International Conference on Nuclear Chemistry for Sustainable Fuel Cycles /5./. Montpellier (FR), 05.06.2016-10.06.2016]
R&D Projects: GA MŠMT(CZ) 7G13003
EU Projects: European Commission(XE) 323282 - SACSESS
Institutional support: RVO:61388980
Keywords : CyMe4-BTBP * CyMe4-BTPhen * radiolytic stability * accelerated electrons * FS-13
OECD category: Inorganic and nuclear chemistry
http://www.sciencedirect.com/science/article/pii/S1876619616300675

The radiolytic stability of two ligands, CyMe4-BTBP and CyMe4-BTPhen in system with the FS-13 (phenyl trifluoromethyl sulfone) diluent was investigated under irradiation by accelerated electrons to study impact of the degradation products on the separation process efficiency and safety. Irradiation experiments were carried out up to the absorbed dose of 200 kGy. The irradiated samples were analysed by HPLC for the degree of extractant degradation. In addition, the effect of the presence of HNO3 during the irradiation was studied. Extraction properties of the irradiated solvents were evaluated and compared with the extraction properties of non-irradiated solvents to assess the impact of the degradation products on extractions properties.
The results obtained show that the stabilities of these ligands are higher in FS-13 than in the cyclohexanone-type solvents. The extraction properties are significantly influenced by degradation products contained in these systems. Surprisingly, both the distribution ratios for americium and europium, and the Am/Eu separation factor increase with the absorbed dose for the system withCyMe4-BTPhen in FS-13. Obviously, the degradation products of this ligand are efficient extractants too. In the next phase, an attempt will be done to identify the main degradation products, synthesise them and study their extraction properties.
Permanent Link: http://hdl.handle.net/11104/0264719