Structural characterization and thermal behavior of lanthanide(III)-vanadium(V)-oxide xerogels

Lanthanide ions react with vanadium(V)-oxide xerogels forming intercalation compounds. In contrast to the pure vanadium(V)-oxide matrix, the removal of the water molecules from the interlamellar space and from the lanthanide coordination shell is practically complete at 150°C, disrupting the bidimen...

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Published inMaterials research bulletin Vol. 33; no. 12; pp. 1783 - 1792
Main Authors Oliveira, H.P, Anaissi, F.J, Toma, H.E
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.12.1998
Subjects
A. layered compounds
B. oxides
C. X-ray diffraction
D. thermogravimetric analysis
D. thermogravimetric analysis
C. X-ray diffraction
A. layered compounds
B. oxides
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Summary:Lanthanide ions react with vanadium(V)-oxide xerogels forming intercalation compounds. In contrast to the pure vanadium(V)-oxide matrix, the removal of the water molecules from the interlamellar space and from the lanthanide coordination shell is practically complete at 150°C, disrupting the bidimensional layered structure. The heating above 450°C leads to the formation of orthorhombic V 2O 5 and tetragonal lanthanide orthovanadates.
ISSN:0025-5408
1873-4227
DOI:10.1016/S0025-5408(98)00177-9