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Structural Studies of Hollandite-Based Radioactive Waste Forms

Published online by Cambridge University Press:  01 February 2011

K. R. Whittle ,
S. E. Ashbrook ,
S.A.T. Redfern ,
G. R. Lumpkin ,
J. P. Attfield ,
M. Dove  and
I. Farnan
K. R. Whittle
Affiliation:
Cambridge Centre for Ceramic Immobilisation - C3i, Dept Of Earth Sciences, University of Cambridge, Cambridge, United Kingdom.
S. E. Ashbrook
Affiliation:
Cambridge Centre for Ceramic Immobilisation - C3i, Dept Of Earth Sciences, University of Cambridge, Cambridge, United Kingdom.
S.A.T. Redfern
Affiliation:
Cambridge Centre for Ceramic Immobilisation - C3i, Dept Of Earth Sciences, University of Cambridge, Cambridge, United Kingdom.
G. R. Lumpkin
Affiliation:
Cambridge Centre for Ceramic Immobilisation - C3i, Dept Of Earth Sciences, University of Cambridge, Cambridge, United Kingdom.
J. P. Attfield
Affiliation:
Dept of Chemistry, University of Cambridge, Cambridge, United Kingdom
M. Dove
Affiliation:
Cambridge Centre for Ceramic Immobilisation - C3i, Dept Of Earth Sciences, University of Cambridge, Cambridge, United Kingdom.
I. Farnan
Affiliation:
Cambridge Centre for Ceramic Immobilisation - C3i, Dept Of Earth Sciences, University of Cambridge, Cambridge, United Kingdom.
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Abstract

Hollandites with compositions Ba1.2-xCsxMg1.2-x/2Ti6.8+x/2 O16, and Ba1.2-xCsxAl2.4-xTi5.6+xO16 (x=0, 0.1, 0.25) have been synthesised using a modified alkoxide/acetate precursor route. The samples have been sintered using two procedures; hot isostatic pressing and sintering at ambient pressure. X-ray powder diffraction has shown samples from both systems to form tetragonal hollandites, with little change when pressed by both methods. Cs-133 MAS NMR spectra have been recorded showing the chemical shift in Al containing samples to be ∼250ppm, and in Mg hollandites ∼175ppm and 200ppm, with little change when prepared by both methods.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 807: Symposium Scientific Basis for Nuclear Waste Management XXVII , 2003 , 339
Copyright
Copyright © Materials Research Society 2004

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References

REFERENCES

1. Cheary, W., Kwiatkowska, J., Journal of Nuclear Materials, 25, 236–243, (1984).Google Scholar
2. Carter, M. L., Vance, E. R., Mitchell, D. R. G., Hanna, J. V., Zhang, Z., Loi, E., Journal of Materials Research, 7, 2578–2589, (2002).Google Scholar
3. Fanchon, E., Vicat, J., Hodeau, J. L., Wolfers, P., Qui, D. T., Strobel, P., Acta Crystallographica Section B-Structural Science, 43, 440–448, (1987).Google Scholar
4. Cheary, R. W., Acta Crystallographica Section B-Structural Science, 42, 229–236, (1986).Google Scholar
5. Cheary, R. W., Acta Crystallographica Section B-Structural Science, 43, 28–34, (1987).Google Scholar
6. Cheary, R. W., Squadrito, R., Acta Crystallographica Section B-Structural Science, 45, 205–212, (1989).Google Scholar
7. Cheary, R. W., Acta Crystallographica Section B-Structural Science, 46, 599–609, (1990).Google Scholar
8. Cheary, R. W., Acta Crystallographica Section B-Structural Science, 47, 325–333, (1991).Google Scholar
9. Kesson, S. E., White, T. J., Proceedings of the Royal Society of London Series a-Mathematical Physical and Engineering Sciences, 408, 295–319, (1986).Google Scholar
10. Shannon, R. D., Acta Crystallographica Section A, A32, 751–767, (1976).Google Scholar