Cobalt catalyst comprising a support containing a mixed oxide phase including cobalt and/or nickel produced using a hydrocarbon compound
AssigneeIfp Energies Nouvelles
InventorsDominique DECOTTIGNIES, Romain CHENEVIER, Antoine FECANT
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Abstract
The invention relates to a catalyst containing an active cobalt phase, deposited on a support comprising alumina, silica or silica-alumina, said support also containing a mixed oxide phase containing cobalt and/or nickel, said catalyst having been prepared by introducing at least one hydrocarbon organic compound of formula CxHy. The invention also relates to the use thereof in the field of Fischer-Tropsch synthesis processes.
Claims16
A catalyst containing an active cobalt phase, deposited on a support comprising alumina, silica or silica-alumina, said support further containing a mixed oxide phase containing cobalt and/or nickel, said catalyst being prepared by a process comprising at least:
- a) a step of bringing a support comprising alumina, silica or silica-alumina into contact with at least one solution containing at least one precursor of cobalt and/or of nickel, then drying and calcining at a temperature between 700 and 1200° C., so as to obtain a mixed oxide phase containing cobalt and/or nickel in the support, then carrying out
- b) a step of bringing said support containing said mixed oxide phase into contact with at least one solution containing at least one precursor of cobalt,
- c) a step of bringing said support containing said mixed oxide phase into contact with a solution containing at least one hydrocarbon organic compound of formula CxHy, it being understood that said hydrocarbon organic compound is in liquid form and that when the solution comprises a solvent, said hydrocarbon organic compound is miscible in the solvent,
- steps b) and c) being able to be performed separately, in any order, or at the same time, then carrying out
- d) a step of drying at a temperature below 200° C.
A process for the preparation of a catalyst containing an active cobalt phase, deposited on a support comprising alumina, silica or silica-alumina, said support further containing a mixed oxide phase containing cobalt and/or nickel, said process comprising at least:
- a) a step of bringing a support comprising alumina, silica or silica-alumina into contact with at least one solution containing at least one precursor of cobalt and/or of nickel, then drying and calcining at a temperature between 700 and 1200° C., so as to obtain a mixed oxide phase containing cobalt and/or nickel in the support, then carrying out
- b) a step of bringing said support containing said mixed oxide phase into contact with at least one solution containing at least one precursor of cobalt,
- c) a step of bringing said support containing said mixed oxide phase into contact with a solution containing at least one hydrocarbon organic compound of formula CxHy, it being understood that said hydrocarbon organic compound is in liquid form and that when the solution comprises a solvent, said hydrocarbon organic compound is miscible in the solvent,
- steps b) and c) being able to be performed separately, in any order, or at the same time, then carrying out
- d) a step of drying at a temperature below 200° C.
Dependencies are inferred from the claim text.