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Article Dans Une Revue ACS Applied Energy Materials Année : 2023

Cobalt Stabilization through Mesopore Confinement on TiO 2 Support for Fischer–Tropsch Reaction

Résumé

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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Chimie
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Dates et versions

hal-04217733 , version 1 (29-09-2023)

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Paternité

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F. Platero, S. Todorova, L. Aoudjera, L. Michelin, B. Lebeau, et al.. Cobalt Stabilization through Mesopore Confinement on TiO 2 Support for Fischer–Tropsch Reaction. ACS Applied Energy Materials, 2023, 6 (18), pp.9475-9486. ⟨10.1021/acsaem.3c01432⟩. ⟨hal-04217733⟩
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