Synthesis of Potassium and Calcium Uranovanadates, analogues of Carnotite and Metatyuyamunite Minerals
The aim of this study was to develop a synthesis of metatyuyamunite (Ca(VUO6)2.3-5H2O) and carnotite (KVUO6.1-3H2O) under hydrothermal conditions. Also, crystals obtained from this synthesis were compared with crystals from melting method. The analyses of synthesis products were performed by X-Ray t...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2012 |
| País: | México |
| Institución: | Universidad Nacional Autónoma de México |
| Repositorio: | Redalyc-UNAM |
| OAI Identifier: | oai:redalyc.org:57023406015 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=57023406015 |
| Access Level: | acceso abierto |
| Palabra clave: | Física, Astronomía y Matemáticas Uranium carnotite metatyuyamunite crystallization hydrothermal synthesis |
| Sumario: | The aim of this study was to develop a synthesis of metatyuyamunite (Ca(VUO6)2.3-5H2O) and carnotite (KVUO6.1-3H2O) under hydrothermal conditions. Also, crystals obtained from this synthesis were compared with crystals from melting method. The analyses of synthesis products were performed by X-Ray techniques. X-Ray Diffraction was used for both species identification, whereas Scanning Electron Microscopy was used to analyze their morphology and elemental composition. Both uranovanadates were positive synthesized under hydrothermal conditions; besides, their morphology presents particles agglomerates. Calcium uranovanadate agglomerates contain well-defined crystals, whereas potassium uranovanadate agglomerates consist in fine powder particles. |
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