Synthesis, Structure Determination, and Aqueous Durability of Cs2ZrSi3O9

Synthesis, Structure Determination, and Aqueous Durability of Cs2ZrSi3O9

The structure of Cs2ZrSi3O9 synthesized using a sol–gel method was determined from the Rietveld refinement of experimental powder X‐ray diffraction data. The refinement confirmed that this compound was isostructural with wadeite: its structure was hexagonal (space group P63/m), and its lattice param...

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Veröffentlicht in:Journal of the American Ceramic Society 2001-01, Vol.84 (1), p.153-160
Hauptverfasser: Balmer, M. Lou, Su, Yali, Xu, Hongwu, Bitten, Eric, McCready, David, Navrotsky, Alexandra
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
aqueous durability
Building materials. Ceramics. Glasses
Ceramic industries
CESIUM OXIDES
chemical durability
Chemical industry and chemicals
CORROSION RESISTANCE
CRYSTAL STRUCTURE
Cs2ZrSi3O9
DISSOLUTION
Exact sciences and technology
LATTICE PARAMETERS
MATERIALS SCIENCE
Miscellaneous
nuclear waste
silicates
SILICON OXIDES
SYNTHESIS
Technical ceramics
X-RAY DIFFRACTION
ZIRCONIUM OXIDES
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Zusammenfassung:The structure of Cs2ZrSi3O9 synthesized using a sol–gel method was determined from the Rietveld refinement of experimental powder X‐ray diffraction data. The refinement confirmed that this compound was isostructural with wadeite: its structure was hexagonal (space group P63/m), and its lattice parameters were a= 7.2303(2) Å and c= 10.2682(4) Å. The aqueous durability of Cs2ZrSi3O9 varied, depending on the solution conditions. In modified leach tests with buffered (pH 7) and unbuffered solutions, the 7‐d cesium release rates were
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.2001.tb00623.x