Cobalt Stabilization through Mesopore Confinement on TiO2 Support for Fischer-Tropsch Reaction
Cobalt supported on mesostructured TiO2 catalysts has been prepared by a wet-impregnation method. The Co/TiO2 catalytic system showed better catalytic performance after support calcination at 380 °C. Co nanoparticles appeared well distributed along the mesopore channels of TiO2. After reduction pret...
| Autores: | , , , , , , , , |
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| Tipo de documento: | artigo |
| Estado: | Versión aceptada para publicación |
| Data de publicação: | 2023 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositório: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/353827 |
| Acesso em linha: | http://hdl.handle.net/10261/353827 https://api.elsevier.com/content/abstract/scopus_id/85173177149 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Cobalt Fischer−Tropsch Mesostructured SMSI TiO2 Catalysts Oxides Redox reactions Selectivity http://vocabularies.unesco.org/thesaurus/concept640 |
| Resumo: | Cobalt supported on mesostructured TiO2 catalysts has been prepared by a wet-impregnation method. The Co/TiO2 catalytic system showed better catalytic performance after support calcination at 380 °C. Co nanoparticles appeared well distributed along the mesopore channels of TiO2. After reduction pretreatment and reaction, a drastic structural change leads to mesopore structure collapse and the dispersion of the Co nanoparticles on the external surface. Along this complex process, Co species first form discrete nanoparticles inside the pore and then diffuse out as the pore collapses. Through this confinement, a strong metal-support interaction effect is hindered, and highly stable metal active sites lead to better performance for Fischer-Tropsch synthesis reaction toward C5+ products. |
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