Radiolysis of C5-BTBP in cyclohexanone irradiated in the absence and presence of an aqueous phase
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Anna Fermvik
Abstract
Spent nuclear fuel contains many highly radioactive species; hence solvents used in reprocessing will be subjected to radiolysis. In this study, solvents containing one of the BTBP molecules intended for the separation of trivalent actinides and lanthanides, the so called C5-BTBP, have been subjected to radiolysis and hydrolysis. We present here that this compound shows a dramatic decrease in both distribution ratios and separation factor when irradiated with higher doses up to 50 kGy; particularly in the presence of an aqueous phase. Furthermore, fast hydrolytic degradation is observed, which significantly contributes to the overall degree of decomposition. This is supported by speciation studies performed by HPLC and LC-MS methods. Proposed structures of the highest-yield degradation products are presented and they seem to confirm previously drawn structures for these products. From these studies it can be concluded that the presence of nitric acid or nitrate during irradiation leads to higher content of species containing keto groups.
© by Oldenbourg Wissenschaftsverlag, Göteborg, Germany
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Articles in the same Issue
- Role of an ionic liquid, 1-butyl-3-methylimidazolium 2-(2-methoxyethoxy)ethyl sulfate in extraction studies of gadolinium oxide
- Production of actinium, thorium and radium isotopes from natural thorium irradiated with protons up to 141 MeV
- Cross section measurements for gallium in the neutron energy range of 13.5 to 14.8MeV
- Syntheses and structures of two uranyl complexes with DMPU
- Incorporation of pertechnetate and perrhenate into corroded steel surfaces studied by X-ray absorption fine structure spectroscopy
- An electro-amalgamation approach to produce 175Yb suitable for radiopharmaceutical applications
- Synthesis, quality control and biological evaluation of tris[(1,10-phenanthroline)[153Sm]samarium(III)]trithiocyanate complex as a therapeutic agent
- Radiolysis of C5-BTBP in cyclohexanone irradiated in the absence and presence of an aqueous phase
