Abstract
A series of new Nd(1-x)SrxZrO(3.5–0.5x) (0 ≤ x ≤ 1) multiphase ceramic waste forms, which can simultaneously immobilize An and Sr (with Nd3+ simulating An3+), were synthesized in situ by a sol-spray pyrolysis method. These multiphase ceramics are composed of a cubic pyrochlore phase Nd2Zr2O7(NZO) and an orthogonal perovskite phase SrZrO3(SZO) without any impurities. The content of the two phases can change regularly with the change of x. Nd and Sr can occupy the ceramics’ most stable lattice sites. The measured density of multiphase ceramics can reach more than 88% of the theoretical density. At the same time, the leaching rates of target Nd, Sr and Zr elements reached ~ 10−5 g·m−2·d−1, ~ 10−3 g·m−2·d−1, and ~ 10−7 g·m−2·d−1 at 90 ℃ and deionized water for 72 days, respectively, which shows that the multiphase ceramics had strong leaching resistance. The experimental results confirm that the new multiphase ceramics can immobilize An and Sr simultaneously and separately, and they have high chemical stability and strong adaptability to waste components. The multiphase ceramics is expected to be an ideal candidate waste form for An and Sr.
Similar content being viewed by others
References
Hatch, L.P.: Ultimate disposal of radioactive wastes. Amer. Sci. 41, 410–421 (1953)
Ringwood, A.E., Kesson, S.E., Ware, N.G.: Immobilisation of high level nuclear reactor wastes in SYNROC. Nature 278, 219–223 (1979)
Wang, S.X., Begg, B.D., Wang, L.M.: Radiation stability of gadolinium zirconate: a waste form for plutonium disposition. J. Mater. Res. 14, 4470–4473 (1999)
Ding, Y., Li, Z., Bai, Z.: Rapid preparation of Nd-doped zirconia ceramics for high-level radioactive waste immobilization. Ceram. Int. 48, 16773–16777 (2022)
Gong, W.L., Lutze, W., Ewing, R.C.: Zirconia ceramics for excess weapons plutonium waste. J. Nucl. Mater. 277, 239–249 (2000)
Nästren, C., Jardin ,R., Somer,J. : Actinide incorporation in a zirconia based pyrochlore (Nd1.8An0.2)Zr2O7+x (An = Th, U, Np, Pu, Am). J.Solid.State.Chem. 182,1–7 (2009).
Sykora, R.E., Raison, P.E., Haire, R.G.: Self-irradiation induced structural changes in the transplutonium pyrochlores An2Zr2O7 (An = Am, Cf ). J. Solid. State. Chem. 178, 578–583 (2005)
Lian, J., Yudintsev, S.V.: Ion beam irradiation of U-, Th- and Ce-doped pyrochlores. J. Alloys. Comp. 444, 429–433 (2007)
Guo, Y.C., Zhang, Y., Allix, M.: Rapid solidification synthesis of novel (La, Y)2(Zr, Ti)2O7 pyrochlore-based glass-ceramics for the immobilization of high-level wastes. J. Eur. Ceram. Soc. 41, 7253–7260 (2021)
Wang, Y., Wang, J., Zhan, X.: Order–disorder structural tailoring and its effects on the chemical stability of (Gd, Nd)2(Zr, Ce)2O7 pyrochlore ceramic for nuclear waste forms. Nucl. Eng. Technol. 54, 2427–2434 (2022)
Wei, G.L., Liu, X.D., Chen, S.Z.: Direct immobilization of simulated nuclear waste in preformed Gd2Zr2O7 pyrochlore via spark plasma sintering reaction. Mater. Chem. Phys. 291, 126711 (2022)
Strachan, D.M.: Radiation damage effects in candidate titanates for Pu disposition: Zirconolite. J. Nucl. Mater. 372, 16–31 (2008)
Grey, I.E., Mumme, W.G., Ness, T.J., Roth, R.S., Smith, K.L.: Structural relations between weberite and zirconolite polytypes—refinements of doped 3T and 4M Ca2Ta2O7 and 3T CaZrTi2O7. J. Sold. State. Chem. 174, 285–259 (2003)
Titanate-based ceramics for separated long-lived radionuclides: Catherine, Thierry, F. A., Florence, B. C. R. Chimie. 7, 1165–1172 (2004)
Jafar,M., Sengupta,P. Achary,S.N.: Phase evolution and microstructural studies in CaZrTi2O7 (zirconolite)–Sm2Ti2O7 (pyrochlore) system. J. Eur, Ceram, Soc. 34, 4373–4381(2014).
Sun, S.K., Martin, C.: Reactive spark plasma synthesis of CaZrTi2O7 zirconolite ceramics for plutonium disposition. J. Nucl. Mater. 500, 11–14 (2018)
Kong, L.G., Wei, T., Zhang, Y.J., Karatchevtseva, I.: Phase evolution and microstructure analysis of CaZrTi2O7 zirconolite in glass. Ceram. Int. 44, 6285–6292 (2018)
Kong, L.G., Karatchevtseva, I., Zhang, Y.J., Wei, T.: The incorporation of Nd or Ce in CaZrTi2O7 zirconolite: Ceramic versus glass-ceramic. J. Nucl. Mater. 543, 152583 (2021)
Tu, H., Duan, T., Ding, T., Lu, X.R., Tang, Y., Li, Y.: Preparation of zircon-matrix material for dealing with high-level radioactive waste with microwave. Mater. Lett. 131, 171–173 (2014)
Nasdala, L., Hanchar, J.M., Kronz, A., Whitehouse, M.J.: Long-term stability of alpha particle damage in natural zircon. Chem. Geol. 220, 83–103 (2005)
Du, J., Devanathan, R., Corrales, L.R., Weber, W.J.: First-principles calculations of the electronic structure, phase transition and properties of ZrSiO4 polymorphs. Comput. Theor. Chem. 987, 62–7 (2012)
Ding, Y., Lu, X., Dan, H.: Phase evolution and chemical durability of Nd-doped zircon ceramics designed to immobilize trivalent actinides. Ceram. Int. 41, 10044–10050 (2015)
Li, J.J., Xian, Q., Chen, Z.Y., Zhang, X.R.: High-efficiency preparation of zircon ceramics using borosilicate glass as sintering additive. Ceram.Int. 48, 22547–22556 (2022)
Xiong,Y.W., Li, J.J., Zhao,D.D., Dan, H., Ding, Y.: High capacity synergistic immobilization of simulated trivalent actinides by zirconia/zircon multiphase ceramics. Ceram.Int.in press.
Flowers, R.M., Shuster, D.L.: Apatite (U-Th)/ He thermochronometry using a radiation damage accumulation and annealing model. Comp.Mater.SC. 73, 2347–2365 (2009)
Yuan, Z.H., Li, S.C., Liu, J.C., Kong, X.G., Gao, T.: Structural, electronic, dynamical and thermodynamic properties of Ca10(PO4)6(OH)2 and Sr10(PO4)6(OH)2: First-principles study. Int. J. Hydrogen. Energ. 43, 13639–13648 (2018)
Das, P., Pathak, N., Modak, P., Modak, B.: Multifunctional Ca10(PO4)6F2 as a host for radioactive waste immobilization: Am3+/Eu3+ ions distribution, phosphor characteristics and radiation induced changes. J. Hazard. Mater. 411, 125025 (2021)
Zhou, J.R., Kirk, M., Baldo, P., Lu, F.Y.: Radiation stability of nanostructured hydroxyapatite Ca10(PO4)6(OH)2 under ion irradiations. J. Nucl. Mater. 557, 153271 (2021)
Teng, Y., Wu, L., Ren, X., Li, Y., Wang, S.: Synthesis and chemical durability of U-doped sphene ceramics. J. Nucl. Mater. 444, 270–273 (2014)
Teng, Y.C., Zhao, W., Ren, X.T., Li, Y.X., Wu, L.: The Preparation and Leaching Performance of Sphene Synroc Form Doped Uranium. Radiation Protection. 32, 72–75 (2012)
Phase evolution of sphene based ceramics during annealing: Maletaškić, J., Matović, Stanković, B., N. Energy Procedia. 131, 407–412 (2017)
Asuvathraman, R., Joseph, K., Madhavan, R.R.: A versatile monazite–IPG glass–ceramic waste form with simulated HLW: synthesis and characterization. J. Ceram. Soc. 35, 4233–4239 (2015)
Heuser, J., Bukaemski, A.A., Neumeier, S.: Raman and infrared spectroscopy of monazite-type ceramics used for nuclear waste conditioning. Prog. Nucl. Energ. 72, 149–155 (2014)
Lu, F.Y.: Size dependence of radiation-induced amorphization and recrystallization of synthetic nanostructured CePO4 monazite. Acta Mater. 61, 2984–2992 (2013)
Ewing, R.C.: Ceramic matrices for plutonium disposition. Prog. Nucl. Energ. 49, 635–643 (2007)
Jia, Y.Q., Marks, N.A., Bosbach, D., Kowalski, P.M.: Elastic and thermal parameters of lanthanide-orthophosphate (LnPO4) ceramics from atomistic simulations. J. Ceram. Soc. 39, 4264–4274 (2019)
Zhao, X.F., Li, Y.X., Yang, X.Y., Wu, L., Wang, L.L., Zhang, T.M.: The structure properties, defect stability and excess properties in Am-doped LnPO4 (Ln = La, Ce, Nd, Sm, Eu, Gd) monazites. J. Alloy. Compd. 806, 113–119 (2019)
Weber, W.J., Ewing, G.R.C.: Plutonium immobilization and radiation effects. Sci. 289, 2051–2052 (2000)
Belin, R.C., Valenza, P.J., Raison, P.E.: Synthesis and Rietveld structure refinement of americium pyrochlore Am 2Zr2O7. J. Alloy. Compd. 448, 321–324 (2008)
Yamamura, H., Nishinoa, H., Kakinumaa, K.: Thermal expansion and solubility limits of plutonium-doped lanthanum zirconates. Solid State Ionics 158, 359–365 (2003)
Martin, P.M., Belin, R.C., Valenza, P.J.: EXAFS study of the structural phase transition in the americium zirconate pyrochlore. J. Nucl. Mater. 385, 126–130 (2009)
Ewing, R.C., Weber, W.J., Lian, J.: Nuclear waste disposal—pyrochlore A2B2O7: nuclear waste form for the immobilization of plutonium and minor actinides. J.Appl.Phy. 95, 5949–5969 (2004)
Deokattey, S., Jahagirdar, P.B., Kumar, V.: Borosilicate glass and Synroc R&D for radioactive waste immobilization: an international perspective. TMS. 55, 48–51 (2003)
Luo, S.G., Yang, J.W., Zhu, X.Z.: Synroc solidification of actinide wastes. Acta Chim. Sinica 58, 1608–1614 (2000)
Gong, W.P.: Experimentation and thermodynamic modelling on SrZrO3. Trans. Nonferrous Met. SOC. 17, 739–743 (2007)
Yang, Y.S., Ning, X.Z., Luo, S.Z., Dong, F.Q., Li, L.F.: Electron irradiation effects of SrZrO3 ceramic for radioactive strontium immobilization. Procedia Environ. Sci. 31, 330–334 (2016)
Santosh, K., Gupta, A., Nimai, P., Ruma, G., Thulasidas, S.K., Natarajan, V.: Probing the oxidation state and coordination geometry of uranium ion in SrZrO3 perovskite. J. Mol. Struct. 1068, 204–209 (2014)
Xie, H., Wang, L.L., Luo, D.L., Yang, Y.S.: Vibrational Spectrum and X-ray diffraction studies of CeZrO4 phase with an ordered arrangement of Ce and Zr ions prepared by graphite reduction. J. Mater. Sci. 49, 3314–3321 (2014)
Xie, H., Wang, L.L., Luo, D.L., Chen, M.: Vibrational spectrum and XPS contrastive studies on pyrochlore-type oxygen-rich Ce2Zr2O8 and oxygen-defective Nd2Zr2O7 phases. Spectrosc. Spect. Anal. 34, 1–6 (2014)
Xie, H., Wang, L.L., Jiang, K.: The stability study on crystal structure of (La1-yNdy)2Zr2O7 pyrochlore simulated immobilizing 241Am. Atomic. Energy Sci. Technol. 47, 724–729 (2013)
Li, Z.X., Yin, F.: Automated measurement of Vickers hardness using image segmentation with neural networks. Meas. 186, 110200 (2021)
Feng, Z.Q., Xie, H., Wang, L.L.: Glass-ceramics with internally crystallized pyrochlore for the immobilization of uranium wastes. Ceram Int. 14, 16999–17005 (2019)
Xie, H., Wang, L.L., Jiang, K., Mi, G.Y., Long, Y., Deng, C.: Stability study on crystal structure of (La1-yNdy)2Zr2O7 pyrochlore simulated immobilizing 241Am. Atomic Energy Sci. Technol. 5, 724–729 (2013)
Esfahania, M.H., Naji, H., Marjerrison, C.A., Greedan, J., Behzad, M.: Microstructural characterization and phase analysis of new pyrochlore-type mixed metal oxides RESmTi2O7 (RE = Gd, Er) by X-ray powder diffraction using Rietveld refinement method and spectroscopic studies. Ceram. Int. 48, 13651–13658 (2022)
Mandala, B.P., BSathec, A.V.: Order-disorder transition in Nd2-yGdyZr2O7 pyrochlore solid solution: an X-ray diffraction and Raman spectroscopic study. J. Solid. State. Chem. 180, 2643–2648 (2007)
Begg, B.D., Hess, N.J., McCready, D.E., Thevuthasan, S., Weber, W.J.: Heavy-ion irradiation effects in Gd2(Ti2-xZrx)O7 pyrochlores. Acta Mater. 289, 188–193 (2001)
Wang, L.L., Xie, H., Chen, Q.Y.: Synthesis and characterization of thorium-doped Nd2Zr2O7 pyrochlore. J. Inorg. Mater. 30, 81–86 (2015)
Kamishima, O., Hattori, T., Ohta, K., Chiba, Y., Ishigame, M.: Raman scattering of single-crystal SrZrO3. J Phys-Condens Matter. 11, 5355–5365 (1999)
Yang, J.W., Luo, S.G., Li, B.J., Tang, B.L.: Pyrochlore-rich Synroc for immobilization of actinide. Atomic Energy Sci. Technol. 35, 104–109 (2001)
Feng, J., Xiao, B., Qu, Z.X.: Mechanical properties of rare earth stannate pyrochlores. Appl. Phys. Lett. 99, 201909 (2001)
Lutique, S., Konings, R.J.M., Rondinella, V.V., Somers, J., Wiss, T.: The thermal conductivity of Nd2Zr2O7 pyrochlore and the thermal behaviour of pyrochlore-based inert matrix fuel. J. Alloy. Compd. 352, 1–5 (2003)
Tang, C.H., Zhu, X.Y., Cai, M.Q.: First-principle study of electronic band structure and optical properties of strontium zirconate. J. Nanjing Univ. Aeronaut .Astronaut. 39, 273–276 (2007)
Funding
This study was funded by the Sichuan Science and Technology Program (No. 2020YJ0356) and Natural Science Foundation of Sichuan Province (2022NSFSC0252) and the National Natural Science Foundation of China (41502028).
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Competing interests
The authors declare no competing interests.
Additional information
Publisher's note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Highlights
1) A series of new (Nd,An)2Zr2O7-SrZrO3 multiphase ceramics containing actinide nuclides and the fission product Sr were synthesized by sol-spray pyrolysis method.
2) (Nd,An)2Zr2O7-SrZrO3 multiphase ceramics has strong adaptability to waste streams, the component of the two phases can change regularly with the content of Sr.
3) The measured density of multiphase ceramics can reach more than 88% of the theoretical density.
4) (Nd,An)2Zr2O7-SrZrO3 multiphase ceramics have high chemical stability, the leaching rates of target Nd, Sr and Zr elements reached ~ 10−5 g·m−2·d−1, ~ 10−3 g·m−2·d−1, and ~ 10−7 g·m−2·d−1 at 90 ℃ and deionized water for 72 days.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Xie, H., Lan, R., Wang, L. et al. Preparation and chemical stability evaluation of new (Nd,An)2Zr2O7-SrZrO3 multiphase ceramics. J Aust Ceram Soc 59, 751–761 (2023). https://doi.org/10.1007/s41779-023-00871-1
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s41779-023-00871-1