Influence of Preparation Method of the CeO2 over their Structural Characteristics
| Autor: | Laédna Souto Neiva, Matheus José Cunha de Oliveira, Elvia Leal, Maria Aparecida Ribeiro, Lucianna Gama, Aluska N. Simões |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Mechanical Engineering Oxide Mineralogy Condensed Matter Physics Combustion Hydrothermal circulation Metal Crystallinity chemistry.chemical_compound Adsorption chemistry Chemical engineering Mechanics of Materials visual_art Desorption visual_art.visual_art_medium General Materials Science Ceramic |
| Zdroj: | Materials Science Forum. :1256-1259 |
| ISSN: | 1662-9752 |
| Popis: | The aim this work is to synthesize the CeO2in the ceramic powder form through three different methods of synthesis, they are: method of combustion, Pechini method and hydrothermal method. Will be evaluated the influence exerted by these methods of preparing of the metallic oxide on the structural features presented in the same. Three samples of CeO2were synthesized in this work, they were analysed by x-ray diffraction, SEM and adsorption and desorption of N2by BET method. According to the results has been observed that the synthesis method has great influence on the structural characteristics of CeO2obtained. The sample of CeO2synthesized by Pechini method showed a structure with a higher percentage of crystallinity and average pore diameter smaller when compared to samples of CeO2synthesized by means of the combustion method and of the hydrothermal method. The sample synthesized by the combustion reaction method presented larger agglomerated of unitary particles. |
| Databáze: | OpenAIRE |
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