Cobalt catalyst comprising a support comprising a mixed oxide phase including cobalt and/or nickel produced from a dilactone compound
AssigneeIfp Energies Nouvelles
InventorsDamien Delcroix, Manuel Corral Valero
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Abstract
The present invention relates to a catalyst containing an active cobalt phase, deposited on a support comprising alumina, silica or silica-alumina, said support containing a mixed oxide phase containing cobalt and/or nickel, said catalyst has been prepared by introducing at least one organic compound of the family of dilactones. The invention also relates to the process for the preparation thereof, and to the use thereof in the field of Fischer-Tropsch synthesis processes.
Claims13
A catalyst containing an active cobalt phase, deposited on a support comprising alumina, silica or silica-alumina, said support containing a mixed oxide phase containing cobalt and/or nickel, wherein said catalyst is prepared by a method 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 at a temperature below 200° C. and calcining at a temperature of between 700° C. 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 at least one organic compound of the family of dilactones,
- wherein the organic compound of the family of dilactones is selected from the group consisting of cyclic dilactones having 4 ring members consisting of 1,2-dioxetanedione, cyclic dilactones having 5 ring members consisting of 1,3-dioxolane-4,5-dione, 1,5-dioxolane-2,4-dione, and 2,2-dibutyl-1,5-dioxolane-2,4-dione, cyclic dilactones having 6 ring members consisting of 1,3-dioxane-4,6-dione, 2,2-dimethyl-1,3-dioxane-4,6-dione, 2,2,5-trimethyl-1,3-dioxane-4,6-dione, 1,4-dioxane-2,5-dione, 3,6-dimethyl-1,4-dioxane-2,5-dione, 3,6-diisopropyl-1,4-dioxane-2,5-dione, and 3,3-ditoluyl-6,6-diphenyl-1,4-dioxane-2,5-dione, and cyclic dilactones having 7 ring members consisting of 1,2-dioxepane-3,7-dione, 1,4-dioxepane-5,7-dione, 1,3-dioxepane-4,7-dione and 5-hydroxy-2,2-dimethyl-1,3-dioxepane-4,7-dione,
- steps b) and c) being able to be performed separately, in any order, or at the same time,
- d) then carrying out a step of drying at a temperature below 200° C.
Dependencies are inferred from the claim text.