Intermediate Cubic Phase Crystallized from Synroc Alkoxide Precursor at 800°C

When the alkoxide precursor to Synroc is heated to 800°C in air, a cubic oxide is formed. This phase is shown by X-ray and neutron powder diffraction to have the fluorite (a=4.99 Å) rather than the pyrochlore structure. This has important implications for waste encapsulation.

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Bibliographische Detailangaben
Veröffentlicht in:	Journal of solid state chemistry 2000-02, Vol.150 (1), p.209-212
Hauptverfasser:	Vance, E.R., Hunter, B.A., Davis, R.L., Hawkins, K.D.
Format:	Artikel
Sprache:	eng
Schlagworte:	alkoxides Applied sciences Condensed matter: structure, mechanical and thermal properties Exact sciences and technology fluorite Inorganic compounds Physics Pollution powder diffraction pyrochlore Radioactive wastes Structure of solids and liquids crystallography Structure of specific crystalline solids Wastes Water, oxides, hydroxides, peroxides
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Beschreibung
Zusammenfassung:	When the alkoxide precursor to Synroc is heated to 800°C in air, a cubic oxide is formed. This phase is shown by X-ray and neutron powder diffraction to have the fluorite (a=4.99 Å) rather than the pyrochlore structure. This has important implications for waste encapsulation.
ISSN:	0022-4596 1095-726X
DOI:	10.1006/jssc.1999.8586