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Solubility of Simulated Hlw Elements in Pyrochlore Structure

Published online by Cambridge University Press:  25 February 2011

Issei Hayakawa and
Hiroshi Kamizono
Issei Hayakawa
Affiliation:
On leave from NGK Insulators, Ltd
Hiroshi Kamizono
Affiliation:
Dept. of Environmental Safety Research, Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken, 319-11, Japan
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Abstract

We have found that lanthanum zirconate (La2Zr2O7) with a pyrochlore structure can be used as a superior host phase for actinide and lantanide elements contained in high-level nuclear waste. The solubility of Ce, Nd and Sr in La2Zr2O7 is determined because Ce and Nd may simulate the segregation of actinide and lanthanide elements at the grain boundaries of polycrystalline La2Zr2O7. The results show that La2Zr2O7 is a promising material for confining actinide and lanthanide elements in its crystal structure.

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References

REFERENCES

1. Kamizono, H., Hayakawa, I. and Muraoka, S., J. Am. Ceram. Soc. 74 (4), 863 (1991).Google Scholar
2. Hayakawa, I. and Kamizono, H., in The Third International Svmnosium on Advanced Nuclear Energy Research. proceeding, (JAERI, Japan, 1991) p. 408–413.Google Scholar
3. Kingery, W. D., Bowen, H. K. and Uhlmann, D. R., Introduction to Ceramics, (John Wiley & Sons, New York, 1960) p. 134, p. 99.Google Scholar
4. Kawakubo, T., Hirayama, H. and Kaneko, T., Zairyo. 39 (438), 78 (1990).Google Scholar
5. Scheetz, B. E., White, W. B. and Atkinson, S. D., Nucl. Technol. 5, 289 (1982).Google Scholar
6. Brookins, D. G., Eh-pH Diagrams for Geochemistry, (Springer Verlag, Berlin, 1988), p. 116.Google Scholar
7. Levin, E. M., Robbins, C. R. and McMurdie, H. F., Phase Diagrams for Ceramists, (Am. Ceram. Soc., Columbus, 1964), p. 137.Google Scholar
8. Duran, P., Gonzalez, M., Moure, C., Jurado, J. R. and Pascual, C., J.Mater.Sci. 25, 5001 (1990).Google Scholar
9. McCarthy, G. J., in Proc. Rare Earth Res. Conf., 12th, 2,665 (1976).Google Scholar
10. Muromura, T. and Hinatsu, Y., J. Nucl. Mater. 151, 55 (1987)Google Scholar
1 l Wakiya, N., Kieda, N. et al. , in the Japan Ceramic Society Annual Meeting, proceeding, (Jap. Ceram. Soc., Japan. 1991), p. 222.Google Scholar