Structural changes and activation treatment in a Co/SiO2 catalyst for Fischer–Tropsch synthesis
2006; Elsevier BV; Volume: 114; Issue: 4 Linguagem: Inglês
10.1016/j.cattod.2006.02.065
ISSN1873-4308
AutoresVíctor A. de la Peña O’Shea, Narcı́s Homs, J.L.G. Fierro, Pilar Ramı́rez de la Piscina,
Tópico(s)Catalysis for Biomass Conversion
ResumoWe examined the effect of the activation process on the structural and morphological characteristics of a cobalt-based catalyst for Fischer–Tropsch synthesis. A 10 wt.% Co/SiO2 catalyst prepared by wet impregnation was separately activated under H2, CO or a H2/CO mixture. The structural changes during activation from 298 to 773 K were studied by in situ X-ray diffraction. Catalysts were examined by SEM, TEM, XPS and in situ DRIFT-MS. The H2/CO activation produced redispersion of cobalt particles and simultaneous carbon nanostructures formation. The catalyst showed the highest performance in the Fischer–Tropsch synthesis after the H2/CO activation.
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