Radiation chemistry of cis-syn-cis dicyclohexano-18-crown-6 (DCH18C6): Acidity and uranyl nitrate dependence |
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| Institution: | 1. Laboratoire de Chimie Moléculaire et Environnement (EA1651), Université de Savoie-Polytech’Savoie, Campus Scientifique, 73376 Le Bourget du Lac Cedex, France;2. Laboratoire de Chimie Organique (UMR7084), Conservatoire National des Arts et Métiers, 2 rue conté, 75003 Paris, France;3. Laboratoire des sciences analytiques, UMR CNRS 5180, Université Claude Bernard, Lyon 1, 43 boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France;4. Laboratoire de Catalyse et Synthèse Organique, UMR CNRS 5246, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Université Lyon 1 CPE, 43 boulevard du 11 novembre 1918, Villeurbanne 69622, France;1. Analytical Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India;2. High Pressure & Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India;1. Department of Pharmaceutical Sciences, University of Catania, Viale Andrea Doria 6, 95125 Catania, Italy;2. Department of Chemical Science, University of Catania, Viale Andrea Doria 6, 95125 Catania, Italy;3. I.N.S.T.M. UdR of Catania, Viale A. Doria 6, 95125 Catania, Italy;1. Helmholtz-Zentrum Dresden-Rossendorf, Institute of Resource Ecology, Permoserstr. 15, 04318 Leipzig, Germany;2. University of Potsdam, Institute of Chemistry (Physical Chemistry), Karl-Liebknecht-Str. 24-25, 14476 Golm, Germany;1. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China;2. Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Tsinghua University, Beijing 100084, China;1. Department of Radiation Oncology, Medwin Cancer Center, Hyderabad, India;2. Photonics, Nuclear and Medical Physics Division, VIT University, Vellore, India |
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| Abstract: | The cis-syn-cis isomer of dicyclohexano-18-crown-6 (DCH18C6) has been shown to be an efficient extractant able to perform the separation of Pu(IV) and U(VI) from fission products and then the separation of Pu(IV) from U(VI) without valence exchange as required in the PUREX process. This macrocycle was irradiated in nitric acid with a 137Cs γ source to study its radiation chemical stability. Radiation chemical yields (G) were determined by gas chromatography. The results show that the presence of uranyl nitrate has a strong influence on DCH18C6 radiation chemical stability. Indeed, the presence of this template ion increases the macrocycle stability by promoting fragments recombination. |
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