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Synthesis of Ce-Doped Zircon by a Sol-Gel Process

Published online by Cambridge University Press:  10 February 2011

S.V. Ushakov ,
B.E. Burakov ,
V.M. Garbuzov ,
E.B. Anderson ,
E.E. Strykanova ,
M.M. Yagovkina ,
K.B. Helean ,
Y.X. Guo ,
R.C. Ewing  and
W. Lutze
S.V. Ushakov
Affiliation:
V.G. Khlopin Radium Institute, 28, 2nd Murinskiy Ave, 194021 St. Petersburg, RUSSIA
B.E. Burakov
Affiliation:
V.G. Khlopin Radium Institute, 28, 2nd Murinskiy Ave, 194021 St. Petersburg, RUSSIA
V.M. Garbuzov
Affiliation:
V.G. Khlopin Radium Institute, 28, 2nd Murinskiy Ave, 194021 St. Petersburg, RUSSIA
E.B. Anderson
Affiliation:
V.G. Khlopin Radium Institute, 28, 2nd Murinskiy Ave, 194021 St. Petersburg, RUSSIA
E.E. Strykanova
Affiliation:
V.G. Khlopin Radium Institute, 28, 2nd Murinskiy Ave, 194021 St. Petersburg, RUSSIA
M.M. Yagovkina
Affiliation:
JSC “Mekhanobr-Analyt”, 8a, 21 Linija, 199026, St.Petersburg, RUSSIA
K.B. Helean
Affiliation:
Dept. of Earth&Planetary Sciences, University of New Mexico, Albuquerque, NM 87131
Y.X. Guo
Affiliation:
Dept. of Earth&Planetary Sciences, University of New Mexico, Albuquerque, NM 87131
R.C. Ewing
Affiliation:
Dept. of Nuclear Engineering&Radiological Sciences, University of Michigan, MI 48109
W. Lutze
Affiliation:
Dept. of Chem.&Nuclear Engineering, University of New Mexico, Albuquerque, NM 87131
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Abstract

Zircon, ZrSiO4, is a prospective durable host material for the immobilization of excess weapons plutonium. Using cerium as a chemical analogue for plutonium, the experiments on the synthesis of Ce-doped zircon were conducted by sintering of sol-gel precursors in air and vacuum. The results showed that cerium substantially promotes zircon formation from sol-gel precursors and sintering in air is preferable for cerium incorporation in zircon structure. Based on measured lattice constants, solid solution compositions (Zr0.96Ce0.04)SiO4 and (Zr0.98Ce0.02)SiO4 were formed in samples sintered in air at 1400°C and 1600°C, respectively. The solubility limits of cerium and actinides in zircon and mechanism of zircon formation are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 506: Symposium – Scientific Basis for Nuclear Waste Management XXI , 1997 , 281
Copyright
Copyright © Materials Research Society 1998

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References

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