ISSN:
1573-1111
Keywords:
Vanadyl phosphate
;
inclusion compounds
;
topotactic reactions
;
solid acids
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Sodium-containing intercalates having as general formula Na x VOPOP4·(2−x)H2O (0.25≤x〈0.50) have been obtained and characterized. Orthorhombic phases, which essentially maintain the structure of the layered oxide hydrate VOPO4·2H2O result. Intercalated sodium ions act as ‘pillars’. The presence of H3O+ ions in the parent VOPO4·2H2O and also in some reduced phases, is detected. The understanding of the structural role of the water molecules is advanced and the topotactic dehydration/rehydration processes are studied. The formation of a new metastable VOPO4·H2O phase is established.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00663052
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