Tailored approach for hierarchization of all-silica zeolites
[EN] Adding secondary mesoporosity to all-silica zeolites can improve mass transfer, potentially leading to new applications in catalysis and separation. The tailored post-synthesis methods involving detemplation, desilication, and application of pore-directing agents were applied to examine the inf...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/226537 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/226537 |
| Access Level: | acceso abierto |
| Palabra clave: | All-silica zeolites Mesoporosity Defects FT-IR spectroscopy |
| Sumario: | [EN] Adding secondary mesoporosity to all-silica zeolites can improve mass transfer, potentially leading to new applications in catalysis and separation. The tailored post-synthesis methods involving detemplation, desilication, and application of pore-directing agents were applied to examine the influence of zeolite type structure, crystal properties, and synthesis conditions on the hierarchization feasibility of all-silica ITQ-29 (LTA), silicalite-1 (MFI), silicalite-2 (MEL), and beta (*BEA) zeolites. Advanced characterization tools such as rapid scan RS FT-IR spectroscopy, field emission scanning electron microscopy, and focused ion beam provided insight into the properties of hierarchical all-silica zeolites. The formation of hierarchical all-silica zeolites was found to be pore size and shape-dependent and defects-oriented; however, the ultimate influence of these factors on hierarchization is interdependent. |
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