Abstract
The post-radiation (dose 1 MGy) thermal and hydrolytic stability of 30 vol % tributyl phosphate solutions in Isopar-M at 90–170°C in contact with an aqueous solution of 8–12 M HNO3 was studied. Isoparaffins participate in the radiolytic degradation of TBP mainly due to radical processes of alkylation and hydrogenation. Post-radiation acid hydrolysis causes degradation of nitrogen-containing radiolysis products, leading to partial regeneration of dibutyl phosphate and monobutyl phosphate. Heating additionally stimulates the dealkylation of products with the formation of volatile hydrocarbons, which increases the fire and explosion hazard of high-temperature operations with irradiated solutions.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
Egorov, G.F., Radiatsionnaya khimiya ekstraktsionnykh sistem (Radiation Chemistry of Extraction Systems), Moscow: Energoatomizdat, 1986.
Rodin, A.V., Skvortsov, I.V., Belova, E.V., Dvoeglazov, K.N., and Myasoedov, B.F., Radiochemistry, 2020, vol. 62, no. 6, p. 723.
Aneheim, E., Ekberg, C., Fermvik, A., Foreman, M.R.S.J., Grűner, B., Hájková, Z., and Kvičalová, M., Solvent Extr. Ion Exch., 2011, vol. 29, no. 2, p. 157.
Vladimirova, M.V., Kulikov, I.A., Kuprij, A.A., At. Energy, 1991, vol. 70, no. 2, p. 111.
Wright, A., Paviet-Hartmann, P., Sep. Sci. Technol., 2010, vol. 45, no. 12–13, p. 1753.
Nash, K.L., Madic, C., Mathur, J.N., and Lacquement, J., The Chemistry of the Actinide and Transactinide Elements, Dordrecht: Springer, 2010.
Mincher, B.J., Modolo, G., and Mezyk, S.P., Solvent Extr. Ion Exch., 2009, vol. 27, no. 1, p. 1.
Dzhivanova, Z., Kadyko, M., Smirnov, A., and Belova, E., J. Radioanal. Nucl. Chem., 2019, vol. 321, no. 2, p. 439.
Bol’shakova, I.A., Ponomarev, A.V., Smirnov, A.V., and Belova, E.V., Radiokhimiya, 2022, vol. 64, no. 6, p. 1.
Serenko, Y., Yudin, N.V., Gritcenko, R.T., Rodin, A.V., Belova, E.V., and Ponomarev, A.V., Radiat. Phys. Chem., 2021, vol. 185, 109495.
Shin, H.-S., Kim, Y.-R., and Ponomarev, A.V., Mendeleev Commun., 2001, vol. 11, no. 1, p. 21.
Metreveli, A.K. and Ponomarev, A.V., Radiat. Phys. Chem., 2016, vol. 124, p. 212.
Vlasov, S.I., Kholodkova, E.M., and Ponomarev, A.V., High Energy Chem., 2021, vol. 55, no. 5, p. 393.
Balcerzyk, A., El Omar, A.K., Schmidhammer, U., Pernot, P., and Mostafavi, M., J. Phys. Chem. A, 2012, vol. 116, no. 27, p. 7302.
Musat, R., Denisov, S.A., Marignier, J.-L., and Mostafavi, M., J. Phys. Chem. B, 2018, vol. 122, no. 7, p. 2121.
Tian, M.-K., Tang, S.-L., Tang, H.-B., and Ju, X.-H., J. Chem., 2020, vol. 2020, 2012417.
ACKNOWLEDGMENTS
The study was carried out on the equipment of the unique scientific installation “Complex of radiation-chemical research” of the Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences.
Funding
The work was supported by the Ministry of Science and Higher Education of the Russian Federation.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
The authors declare no conflicts of interest.
Additional information
Translated from Radiokhimiya, No. 6, pp. 539–546, December, 2022 https://doi.org/10.31857/S0033831122060065
Supplementary information
Rights and permissions
About this article
Cite this article
Belova, M.M., Ponomarev, A.V., Smirnov, A.V. et al. Influence of Isopar-M on Radiation and Thermal Degradation of Tri-n-Butyl Phosphate in Solutions. Radiochemistry 64, 705–712 (2022). https://doi.org/10.1134/S1066362222060066
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1066362222060066