A new story in the structural chemistry of cerium(IV) phosphate

Two different cerium(IV) phosphates have been prepared by ageing at 95 °C an aqueous solution made from Ce(NO 3) 6(NH 4) 2, nitric acid, and phosphoric acid with the following conditions: P/Ce=2, [HNO 3]=5.8 M and [Ce 4+]=0.1 M. The control over the formed solid was achieved through the ageing time....

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Veröffentlicht in:The Journal of physics and chemistry of solids Jg. 68; H. 5; S. 795 - 798
Hauptverfasser: Nazaraly, Micaela, Chanéac, Corinne, Ribot, François, Wallez, Gilles, Quarton, Michel, Jolivet, Jean-Pierre
Format: Journal Article Tagungsbericht
Sprache:Englisch
Veröffentlicht: Oxford Elsevier Ltd 01.05.2007
Elsevier
Schlagworte:
A. Inorganic compounds
C. TGA
C. X-ray diffraction
Condensed matter: structure, mechanical and thermal properties
D. NMR
Exact sciences and technology
Inorganic compounds
Physics
Structure of solids and liquids; crystallography
Structure of specific crystalline solids
A. Inorganic compounds
D. NMR
C. TGA
C. X-ray diffraction
Aqueous solutions
Thermogravimetry
Aging
Cerium phosphates
XRD
Nuclear magnetic resonance
Solid structure
ISSN:0022-3697, 1879-2553
Online-Zugang:Volltext
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Zusammenfassung:Two different cerium(IV) phosphates have been prepared by ageing at 95 °C an aqueous solution made from Ce(NO 3) 6(NH 4) 2, nitric acid, and phosphoric acid with the following conditions: P/Ce=2, [HNO 3]=5.8 M and [Ce 4+]=0.1 M. The control over the formed solid was achieved through the ageing time. After 18 h, a metastable compound ( A), corresponding to Ce(PO 4) 1.5(H 2O)(H 3O) 0.5(H 2O) 0.5, is obtained, while after 5 days a stable one ( B), corresponding to Ce(PO 4)(HPO 4) 0.5(H 2O) 0.5, is recovered. Both solids exhibit a P/Ce ratio of 1.5. Their structures, 31P solid state NMR, and thermal behaviors are compared.
ISSN:0022-3697
1879-2553
DOI:10.1016/j.jpcs.2007.03.010