Title of article
Crystal Chemistry of Immobilization of Tetravalent Ce and Se in Ceramic Matrix of Sodium Zirconium Phosphates
Author/Authors
Bohre, A. Dr H.S. Gour University - Department of Chemistry, India , Shrivastava, O.P. Dr H.S. Gour University - Department of Chemistry, India , Awasthi, K. Dr H.S. Gour University - Department of Chemistry, India
From page
21
To page
29
Abstract
Sodium zirconium phosphate (here after NZP) is a typical host material capable of converting the intermediate level waste resulting from light water reactor (LWR) fuel reprocessing into a single-phase material with good stability, high integrity and long durability. The crystal chemistry of NaZr1.9Ce0.1P3O12 and NaZr1.9Se0.1P3O12 phases has been investigated using general structure analysis system programming. The Se/CeNZP phases crystallize in the space group R-3c and Z = 6. Powder diffraction data have been subjected to Rietveld refinement to arrive at a satisfactory structural convergence of R-factors. The Phosphate counter ions stretching and bending vibrations in the infrared (IR) region have been assigned. SEM and EDAX analyses provide evidence of Ce and Se in the matrix.
Keywords
Ceramic , Se , CeNZP , Powder XRD , GSAS , Rietveld refinement
Journal title
Physical Chemistry Research
Journal title
Physical Chemistry Research
Record number
2561345
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