Mechanisms of molybdenum substitution in vanadium antimonate
| Autor: | Fabrizio Cavani, Massimo Cimini, Jean-Marc M. Millet |
|---|---|
| Přispěvatelé: | Institut de recherches sur la catalyse (IRC), Centre National de la Recherche Scientifique (CNRS), IRCELYON, ProductionsScientifiques, M. Cimini, J.M. Millet, F. Cavani |
| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Předmět: |
Absorption spectroscopy
Inorganic chemistry Infrared spectroscopy chemistry.chemical_element Vanadium 010402 general chemistry 01 natural sciences law.invention Inorganic Chemistry chemistry.chemical_compound law MECHANISM OF SUBSTITUTION Materials Chemistry Qualitative inorganic analysis Physical and Theoretical Chemistry Electron paramagnetic resonance 010405 organic chemistry Chemistry [CHIM.CATA] Chemical Sciences/Catalysis [CHIM.CATA]Chemical Sciences/Catalysis Condensed Matter Physics VANADIUM ANTIMONATE 0104 chemical sciences Electronic Optical and Magnetic Materials RUTILE-TYPE STRUCTURE Crystallography HETEROGENEOUS CATALYSIS Molybdenum Ceramics and Composites PROPANE OXIDATION AND AMMOXIDATION CATALYST Antimonate Solid solution |
| Zdroj: | Journal of Solid State Chemistry Journal of Solid State Chemistry, Elsevier, 2004, 177, pp.1045-1052 |
| ISSN: | 0022-4596 1095-726X |
| Popis: | The formation of a solid solution containing the three elements V, Sb and Mo, which are key-elements in the design of light alkane oxidation catalysts, has been studied by incorporating molybdenum into the pure VSbO4 compound as obtained in air at 700°C (V3+0.28V4+0.64□0.16Sb5+0.92O4). Monophasic compounds with a rutile-type structure have been obtained and characterized by X-ray diffraction, electron microscopy, Infrared Fourier transform, X-ray absorption and electron spin resonance spectroscopies. At low molybdenum content, Mo6+ substitute V4+ in the cationic-deficient structure. The charge balance is maintained by an increase of the cationic vacancy number. This leads to the formation of a solid solution corresponding to the formula V3+0.28V4+0.64−3xMo6+2x□0.16+xSb5+0.92O4 with 0 |
| Databáze: | OpenAIRE |
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