STRUCTURE AND CATALYTIC ACTIVITY CHARACTERIZATION OF BISMUTH MOLYBDATE CATALYSTS
We present a study of Bi-Mo catalysts prepared from pure oxides (MoO3 and Bi2O3) by solid state reaction methods. The structure characterization by X-ray diffraction shows only the low temperature (koechlinite) and high temperature (gamma(H)) phases in varying proportions depending on the calcinatio...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 1993 |
| País: | México |
| Institución: | Universidad Nacional Autónoma de México |
| Repositorio: | Sistema de Información de la Facultad de Ciencias, UNAM |
| OAI Identifier: | oai:repositorio.fciencias.unam.mx:11154/3480 |
| Acceso en línea: | http://hdl.handle.net/11154/3480 |
| Access Level: | acceso abierto |
| Palabra clave: | Chemistry, Physical BISMUTH-MOLYBDATE CATALYSTS CHARACTERIZATION OF BISMUTH MOLYBDATES |
| Sumario: | We present a study of Bi-Mo catalysts prepared from pure oxides (MoO3 and Bi2O3) by solid state reaction methods. The structure characterization by X-ray diffraction shows only the low temperature (koechlinite) and high temperature (gamma(H)) phases in varying proportions depending on the calcination temperature. The carbon monoxide oxidation shows a synergetic effect for mixed oxides as compared to pure oxides. Significant differences in catalytic activity, surface morphology and surface concentration were observed when the molybdenum precursor was changed from molybdenum trioxide to ammonium heptamolybdate in the catalyst preparation. |
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