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| HAL : in2p3-00663448, version 1 |
| DOI : 10.1524/ract.2010.1767 |
| Fiche détaillée |  Récupérer au format |
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| Migration 2009, Kennewick : États-Unis (2009) |
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| Chlorine speciation in nuclear graphite: consequences on temperature release and on leaching |
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| C.-E. Vaudey1N. Toulhoat1, 2N. Moncoffre1N. Bérerd1, 3 |
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| (2010) |
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| This paper aims to get information on pristine chlorine speciation and its evolution with temperature in nuclear graphite used as a moderator in the first generation UNGG French reactors. For this purpose, temperature-programmed desorption (TPD) and X-ray photoelectron spectroscopy (XPS) have been carried out on samples annealed in the temperature range 200-1000 °C. Two chemical forms of different thermal stabilities have been identified. Around 70% of chlorine is assigned to stable organic chlorine bound to aromatic carbon whereas around 30% is assigned to inorganic thermally labile oxychlorinated groups. The consequences for direct disposal are discussed. |
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| 1 : | IPNL - Institut de Physique Nucléaire de Lyon |
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| 2 : | CEA-DEN - CEA-Direction de l'Energie Nucléaire |
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| 3 : | IUT A |
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| Thème(s) | : | Physique/Physique/Chimie-Physique |
| in2p3-00663448, version 1 | |
| http://hal.in2p3.fr/in2p3-00663448 | |
| oai:hal.in2p3.fr:in2p3-00663448 | |
| Contributeur : Dominique Girod | |
| Soumis le : Vendredi 27 Janvier 2012, 10:30:26 | |
| Dernière modification le : Vendredi 27 Janvier 2012, 11:43:20 | |
