Radiochemistry

, Volume 55, Issue 1, pp 46–51 | Cite as

Possibility of generation of octavalent curium in the gas phase in the form of volatile tetraoxide CmO4

Article

Abstract

Experiments based on gas thermochromatography were performed with the aim to search for volatile tetraoxide CmO4 in the products of thermal oxidation of microamounts of CmH2–3. The carrier gas was He, and the reagent gas was O2. At their equimolar ratio, the zone of deposition of volatile Cm species at negative temperatures, centered at −80°C, was detected on the quartz column surface. The thermochromatographic peaks formed by plutonium tetraoxide and by the volatile Cm species are similar in shape. The enthalpy of adsorption of this species on the quartz surface was calculated to be −47 ± 12 kJ mol−1. The data obtained are compared to the results of previous experiments with PuH2–3. The chemical behavior of the volatile Cm species at decreased O2 concentration in the carrier gas (1 and 5%) was studied. It resembles the previously studied behavior of PuO4 under similar conditions. It was concluded that the volatile Cm species has the formula CmO4.

Keywords

curium oxides gas thermochromatography 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Spitsyn, V.I. and Ionova, G.V., Radiokhimiya, 1978, vol. 20, no. 3, pp. 328–332.Google Scholar
  2. 2.
    Peretrukhin, V.F., Erin, E.A., Dzyubenko, E.I., et al., Dokl. Akad. Nauk SSSR, 1978, vol. 242, pp. 1359–1362.Google Scholar
  3. 3.
    Domanov, V.P. and Lobanov, Yu.V., Radiokhimiya, 2011, vol. 53, no. 5, pp. 385–387.Google Scholar
  4. 4.
    Ionova, G.V., Mikheev, N.B., and Spitsyn, V.I., Radiokhimiya, 1978, vol. 20, no. 1, pp. 112–115.Google Scholar
  5. 5.
    Ionova, G.V., Mironov, V.S., Spitsyn, V.I., and Pershina, V.G., Radiokhimiya, 1981, vol. 23, no. 1, pp. 6–11.Google Scholar
  6. 6.
    Ionova, G.V., Radiokhimiya, 1982, vol. 24, no. 4, pp. 457–467.Google Scholar
  7. 7.
    Krot, N.N., Shilov, V.P., Nikolaevskii, V.B., et al., Dokl. Akad. Nauk SSSR, 1974, vol. 217, pp. 580–592.Google Scholar
  8. 8.
    The Chemistry of the Actinide Elements, Katz, J.J., Seaborg, G.T., and Morss, L.R., Eds., New York: Chapman and Hall, 1986, 2nd ed., vol. 2, p. 1139.Google Scholar
  9. 9.
    Eichler, B. and Domanov, V.P., J. Radioanal. Chem., 1975, vol. 28, pp. 143–152.CrossRefGoogle Scholar
  10. 10.
    Fizicheskie velichiny: Spravochnik (Physical Quantities: Handbook), Grigor’ev, I.S., Ed., Moscow: Energoatomizdat, 1991, p. 1041.Google Scholar
  11. 11.
    Antony, V.S., Nuclide Chart 2002, Strasbourg (France), p. 38.Google Scholar
  12. 12.
    Domanov, V.P., Buklanov, G.V., and Lobanov, Yu.A., JINR FLNR Scientific Reports, 1997–1998, no. E7-2000-232, pp. 167–168.Google Scholar
  13. 13.
    Domanov, V.P., Buklanov, G.V., and Lobanov, Yu.V., Radiokhimiya, 2002, vol. 44, no. 2, pp. 106–112.Google Scholar
  14. 14.
    Domanov, V.P. and Lobanov, Yu.V., Radiokhimiya, 2009, vol. 51, no. 1, pp. 14–16.Google Scholar
  15. 15.
    Eichler, B. and Zvara, I., JINR Rep., 1975, no. P-12-8943.Google Scholar
  16. 16.
    Eichler, B. and Zvara, I., Radiochim. Acta, 1982, vol. 30, pp. 233–238.Google Scholar
  17. 17.
    Duelman, C.E., Eichler, B., Gaeggeler, H.W., et al., PSI Annual Rep., 1998, p. 4.Google Scholar
  18. 18.
    Domanov, V.P., Radiokhimiya, 2002, vol. 44, no. 2, pp. 102–105.Google Scholar
  19. 19.
    Guillaumont, R., Adloff, J.P., and Peneloux, A., Radiochim. Acta, 1989, vol. 46, no. 4, pp. 169–176.Google Scholar
  20. 20.
    Guillaumont, R., Adloff, J.P., Peneloux, A., et al., Radiochim. Acta, 1991, vol. 54, no. 1, pp. 1–16.Google Scholar
  21. 21.
    Bayar, B., Vocilka, I., Zaitseva, N.G., et al., Radiokhimiya, 1974, vol. 16, no. 3, pp. 329–335.Google Scholar
  22. 22.
    Domanov, V.P., Eichler, B., and Zvara, I., Radiokhimiya, 1984, vol. 26, no. 1, pp. 66–76.Google Scholar
  23. 23.
    Domanov, V.P. and Zvara, I., Radiokhimiya, 1984, vol. 26, no. 6, pp. 770–778.Google Scholar
  24. 24.
    Bayar, B., Rapid Gas Thermochromatographic Methods for Isolation of Radioactive Isotopes of Some Heavy Transition and Platinum Elements, Cand. Sci. (Chem.) Dissertation, Dubna, 1974.Google Scholar
  25. 25.
    Vdovenko, V.M. Sovremennaya radiokhimiya (Modern Radiochemistry), Moscow: Atomizdat, 1969, p. 264.Google Scholar
  26. 26.
    Domanov, V.P., Radiokhimiya, 2009, vol. 51, no. 4, pp. 308–310.Google Scholar
  27. 27.
    Domanov, V.P., Radiokhimiya, 2010, vol. 52, no. 3, pp. 196–201.Google Scholar
  28. 28.
    Choppin, G., Plutonium—the Element of Surprise, Summer School on Actinide Science and Applications, Karlsruhe (Germany): ITU, June 20–23, 2001.Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2013

Authors and Affiliations

  1. 1.Joint Institute for Nuclear ResearchDubna, Moscow oblastRussia

Personalised recommendations