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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1663| Dispersion of Ni Particles on SiO2 by an Improved Incipient Wetness Method and Full Characterization by TEM | |
| CESAR LEYVA PORRAS ALFREDO AGUILAR ELGUEZABAL | |
| Acceso Abierto | |
| Sin Derechos Reservados | |
| TEOS | |
| In heterogeneous catalysis, the chemical reactions are carried out on the catalyst surface. Commonly, this catalyst is composed of small metal particles (active phase) distributed on an inert material (support). For this reason, the distribution and particle size of the active phase play a very important role on the overall efficiency of the reaction. Metals such as Au, Ag, Pd and Pt are commonly loaded on supports with high surface area (Al2O3 and TiO2). Although, these catalysts have shown high conversion efficiencies in different chemical reactions, are costs to synthesize due to the availability of those precious metals. So it is necessary to use alternative materials that meet the same restrictions at a lower cost. An example of this type of material is metallic nickel (Ni) supported on silicon oxide (SiO2). These materials together have been used as a model catalyst in various chemical reactions, including the partial oxidation of methane (POM). This model catalyst has been studied extensively by Crozier et al [1-2]. He proposed that the Ni particles undergo several phase transformations during the POM, reaching an efficiency close to that established by the thermodynamics. Obviously, these advances were achieved after having synthesized a well dispersed catalyst. Therefore, in this work we propose and explain a method for preparing such catalysts. The goal is to impregnate the metal particles on the support and distribute them the best. | |
| 2012 | |
| Memoria de congreso | |
| Inglés | |
| OTRAS | |
| Versión revisada | |
| submittedVersion - Versión revisada | |
| Aparece en las colecciones: | Artículos de Congresos |
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| Dispersion of Ni Particles on SiO2 by an Improved Incipient Wetness Method.pdf | 885.74 kB | Adobe PDF | Visualizar/Abrir |