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Crystallographic Evaluation of Sodium Zirconium Phosphate as a Host Structure for Immobilization of Cesium and Strontium
Author(s) -
Bohre Ashish,
Shrivastava Om Prakash
Publication year - 2012
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2012.02811.x
Subject(s) - strontium , zirconium phosphate , caesium , rietveld refinement , materials science , zirconium , phosphate , crystal structure , crystallography , sodium , sodium phosphates , nuclear chemistry , mineralogy , inorganic chemistry , chemistry , metallurgy , organic chemistry
Sodium zirconium phosphate ( NZP ) is a potential material for immobilization of nuclear effluents. It was observed up to ~7.16 wt% (~2.67 mol%) of strontium and ~14.46 wt% (~3.56 mol%) of cesium could be simultaneously loaded into NZP formulations without significant changes in the three‐dimensional framework structure. The crystal chemistry of Na 1− x ( C s 1.33 S r 1 ) x Z r 2 P 3 O 12 ( x = 0.1–1.0) has been investigated using G eneral S tructure A nalysis S ystem programming. The C s S r NZP phases crystallize in the space group R ‐3 c and Z = 6. Powder diffraction data have been subjected to Rietveld refinement to arrive at a satisfactory structural convergence of R ‐factors.
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