- Cited by 19
Thomas, A.C Dacheux, N Le Coustumer, P Brandel, V and Genet, M 2000. Kinetic and thermodynamic study of the thorium phosphate–diphosphate dissolution. Journal of Nuclear Materials, Vol. 281, Issue. 2-3, p. 91.
Pichot, E. Dacheux, N. Emery, J. Chaumont, J. Brandel, V. and Genet, M. 2001. Preliminary study of irradiation effects on thorium phosphate-diphosphate. Journal of Nuclear Materials, Vol. 289, Issue. 3, p. 219.
Thomas, A.C. Dacheux, N. Le Coustumer, P. Brandel, V. and Genet, M. 2001. Kinetic and thermodynamic studies of the dissolution of thorium–uranium (IV) phosphate–diphosphate solid solutions. Journal of Nuclear Materials, Vol. 295, Issue. 2-3, p. 249.
Pichot, E. Emery, J. Quarton, M. Dacheux, N. Brandel, V. and Genet, M. 2001. Correlation between 31P NMR and X-ray diffraction data in the refinement of the atomic positions of the thorium phosphate-diphosphate crystal structure. Materials Research Bulletin, Vol. 36, Issue. 7-8, p. 1347.
Druyts, F. and Van Iseghem, P. 2003. Conditioning methods for beryllium waste from fusion reactors. Fusion Engineering and Design, Vol. 69, Issue. 1-4, p. 607.
Stefanovsky, Sergey V. Yudintsev, Sergey V. Gieré, Reto and Lumpkin, Gregory R. 2004. Nuclear waste forms. Geological Society, London, Special Publications, Vol. 236, Issue. 1, p. 37.
Tamain, C. Özgümüs, A. Dacheux, N. Garrido, F. and Thomé, L. 2006. Effects of irradiation on the thorium phosphate diphosphate ceramics and consequences on its dissolution. Journal of Nuclear Materials, Vol. 352, Issue. 1-3, p. 217.
Bray, Travis H. Sullens, Tyler A. Shvareva, Tatiana Y. Sykora, Richard E. Haire, Richard G. and Albrecht-Schmitt, Thomas E. 2007. Product evolution in the Np(IV) fluorophosphate system. Journal of Solid State Chemistry, Vol. 180, Issue. 1, p. 70.
Tamain, C. Dacheux, N. Garrido, F. and Thomé, L. 2007. Irradiation effects on thorium phosphate diphosphate: Chemical durability and thermodynamic study. Journal of Nuclear Materials, Vol. 362, Issue. 2-3, p. 459.
Huang, Yanlin Zhao, Wanxue Cao, Yonggang Jang, Kiwan Lee, Ho Sueb Cho, Eunjin and Yi, Soung-Soo 2008. Photoluminescence of Eu3+-doped triple phosphate Ca8MgR(PO4)7 (R=La, Gd, Y). Journal of Solid State Chemistry, Vol. 181, Issue. 9, p. 2161.
Meis, C. and Dacheux, N. 2012. Radiation effects in Thorium Phosphate Diphosphate Th4(PO4)4P2O7. A theoretical approach. MRS Proceedings, Vol. 1475, Issue. ,
Villa, Eric M. Marr, Connor J. Jouffret, Laurent J. Alekseev, Evgeny V. Depmeier, Wulf and Albrecht-Schmitt, Thomas E. 2012. Systematic Evolution from Uranyl(VI) Phosphites to Uranium(IV) Phosphates. Inorganic Chemistry, Vol. 51, Issue. 12, p. 6548.
Villa, Eric M. Marr, Connor J. Diwu, Juan Alekseev, Evgeny V. Depmeier, Wulf and Albrecht-Schmitt, Thomas E. 2013. From Order to Disorder and Back Again: In Situ Hydrothermal Redox Reactions of Uranium Phosphites and Phosphates. Inorganic Chemistry, Vol. 52, Issue. 2, p. 965.
Villa, Eric M. Alekseev, Evgeny V. Depmeier, Wulf and Albrecht-Schmitt, Thomas E. 2013. Syntheses, Structures, and Comparisons of Thallium Uranium Phosphites, Mixed Phosphate-Phosphites, and Phosphate. Crystal Growth & Design, Vol. 13, Issue. 4, p. 1721.
Villa, Eric M. Diwu, Juan Alekseev, Evgeny V. Depmeier, Wulf and Albrecht-Schmitt, Thomas E. 2013. Structural changes within the alkaline earth uranyl phosphites. Dalton Transactions, Vol. 42, Issue. 26, p. 9637.
Rawat, Deepak Dash, Smruti and Joshi, A.R. 2014. Thermodynamic studies of thorium phosphate diphosphate and phase investigations of Th-P-O and Th-P-H2O systems. Thermochimica Acta, Vol. 581, Issue. , p. 1.
Xiao, Bin Langer, Eike Dellen, Jakob Schlenz, Hartmut Bosbach, Dirk Suleimanov, Evgeny V. and Alekseev, Evgeny V. 2015. Chemical and Structural Evolution in the Th–SeO32–/SeO42–System: from Simple Selenites to Cluster-Based Selenate Compounds. Inorganic Chemistry, Vol. 54, Issue. 6, p. 3022.
Villa, Eric Cross, Justin and Albrecht-Schmitt, Thomas 2018. New Uranyl Open Framework and Sheet Compounds Formed via In-Situ Protonation of Piperazine by Phosphorous Acid. Minerals, Vol. 8, Issue. 11, p. 497.
Zubekhina, Bella Yu. and Burakov, Boris E. 2018. Plutonium leaching from polycrystalline and monocrystalline PuO2. Radiochimica Acta, Vol. 106, Issue. 2, p. 119.
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In the framework of radwaste storage, the thorium phosphate-diphosphate Th4(PO 4)4P 2O7 (TPD) has been synthesized in the ThO2 – P2O5 system. This material is very resistant to aqueous corrosion. In this paper we report the conditions of synthesis of TPD doped with small amounts of trivalent actinides and of solid solutions with uranium (IV), neptunium (IV) and plutonium (IV). Sintered samples of TPD and Th4_xUx(PO4)4P2O7 (TUPD) have been prepared after pressing at 100-800 MPa at room temperature then heating at 1250°C for 10 hours. The corresponding density varies from 87 to 93% of the calculated value from crystal data. Leaching tests of Th4 (PO4)4P2O7 doped with Am3+ or Cm3+ and solid solutions Th4_xUx(PO4)4P2O7 (TUPD) or Th4-xPux(PO4)4P2O7 (TPPD) have been performed in water and in several acidic media at room temperature and at 90'C. The dependence of the leaching rate on the pH has been determined: the partial order related to [H3O+] is in the 0.35 – 0.44 range while the apparent leaching rate is equal to about 1 x 10–5x–4 x 10–5 g/(m2d).
Hide All1. Bénard, P., Brandel, V., Dacheux, N., Jaulmes, S., Launay, S., Lindecker, C., Genet, M., Louër, D.and Quarton, M., Chem. Mater., p. 181, 8 (1996).2. Dacheux, N., Thèse, , Université de Paris XI, Orsay, IPNO-T 95-04, March 31, 1995.3. Dacheux, N., Podor, R., Brandel, V., Genet, M., J. Nucl. Mater., p. 179, 252(3) (1998).4. Dacheux, N., Thomas, A.C., Brandel, V., Genet, M., J. Nucl. Mater., p. 108, 257(2) (1998).5. Aagaard, P., Helgeson, H. C., Am. J. Sc., p. 237, 282 (1982).6. Helgeson, H. C., Murphy, W. M., Aagaard, P., Geochim. Cosmochim. Acta, p. 2405, 48 (1984).7. Rai, D., Felmy, A. R., Fulton, R. W., Radiochim. Acta, p. 7, 56 (1992).8. In International Symposium on Waste Management Technologies in Ceramics and Nuclear Industry, Cincinnati, May 3-6, 1998. In Press.9. International Centre for Diffraction Data, PDF-2 database, Newtown Square, PA.10. Sandino, A., Bruno, J., Geochim. Cosmochim. Acta, p. 2405, 48 (1984).
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