Cobalt catalysts
AssigneeSasol Technology (Proprietary) Limited
InventorsPeter Jacobus Van Berge, Jan Van De Loosdrecht, Jacobus Lucas Visagie
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Abstract
A process for preparing a cobalt based catalyst precursor includes in a first support impregnation/drying/calcination stage, impregnating a particulate porous catalyst support with a cobalt salt, partially drying the impregnated support, and calcining the partially dried impregnated support to obtain a calcined material. The calcined material is partially reduced. Thereafter, in a second support impregnation/drying/calcination stage, the partially reduced material is impregnated with a cobalt salt, partially dried and calcined, to obtain the cobalt based catalyst precursor.
Claims14
A process for preparing a cobalt based catalyst precursor, which process includes
- in a first support impregnation/drying/calcination stage, impregnating a particulate porous catalyst support, with a cobalt salt, partially drying the impregnated support, and calcining the partially dried impregnated support to obtain a calcined material;
- partially reducing the calcined material;
- and
- in a second support impregnation/drying/calcination stage, impregnating the partially reduced material with a cobalt salt, partially drying the impregnated material, and calcining the partially dried impregnated material, to obtain the cobalt based catalyst precursor.
A process for preparing a cobalt based Fischer-Tropsch catalyst, which process includes
- in a first support impregnation i drying/calcination stage, impregnating a particulate porous catalyst support with a cobalt salt, 20 partially drying the impregnated support, and calcining the partially dried impregnated support to obtain a calcined material;
- partially reducing the calcined material;
- in a second support impregnation/drying/calcination stage, impregnating the partially reduced material with a cobalt salt, partially drying the impregnated material, and calcining the partially dried impregnated material, to obtain a cobalt based catalyst precursor;
- and
- reducing the cobalt based catalyst precursor, to obtain the cobalt based Fischer-Tropsch catalyst.
Dependencies are inferred from the claim text.