Preparation of a cobalt-containing catalyst
AssigneeShell USA, Inc.
InventorsJurjen Meeuwissen, Erwin Roderick Stobbe
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Abstract
The present invention is directed to the preparation of a cobalt containing catalyst, a precipitate as an intermediate product, a Fischer-Tropsch catalyst and a process for producing normally gaseous, normally liquid and optionally normally solid hydrocarbons from synthesis gas. The precipitate and catalyst comprise crystalline Co(OH)(CO3)0.5, the crystals are needle shaped and have a surface area of at least 80 m2/g dry precipitate.
Claims10
A process for the preparation of a cobalt-containing catalyst or catalyst precursor, comprising:
- (a) mixing:
- (1) water;
- (2) a first aqueous solution comprising carbonate and hydroxide ions;
- (3) a second aqueous solution comprising cobalt ions and ions of at least one promoter metal compound, selected from the group consisting of manganese, vanadium, rhenium, ruthenium, zirconium, titanium or chromium;
- to form a mixture;
- (b) obtaining from the mixture obtained in step (a) a precipitate consisting of needle shaped crystalline Co(OH)(CO3)0.5 and X(OH)(CO3)0.5 H2O wherein X is selected from the group consisting of manganese, vanadium, rhenium, ruthenium, zirconium, titanium or chromium, the precipitate having a surface area of at least 80 m2/g;
- wherein the pH of the mixture of step (a) during mixing is maintained within the range of 6.5 to 8.5 and the temperature of the water, first and second aqueous solution and the mixture obtained in step (a) is maintained within the range of 50 and 85 degrees Celsius;
- and
- (c) co-mulling of a carrier material and the precipitate to obtain a co-mulled material wherein prior to the co-mulling the precipitate is washed.
A Fischer-Tropsch catalyst comprising a carrier material and crystalline Co(OH)(CO3)0.5 H2O and X(OH)(CO3)0.5 H2O wherein X is selected from the group consisting of manganese, vanadium, rhenium, ruthenium, zirconium, titanium or chromium, wherein the crystals are needle shaped and have a surface area of at least 80 m2/g dry precipitate.
A precipitate consisting of crystalline Co(OH)(CO3)0.5 and X(OH)(CO3)0.5 H2O wherein X is selected from the group consisting of manganese, vanadium, rhenium, ruthenium, zirconium, titanium or chromium, wherein the crystals are needle shaped and have a surface area of at least 80 m2/g dry precipitate.
A Fischer-Tropsch catalyst precursor comprising a carrier material and crystalline Co(OH)(CO3)0.5 H2O and X(OH)(CO3)0.5 H2O wherein X is selected from the group consisting of manganese, vanadium, rhenium, ruthenium, zirconium, titanium or chromium, wherein the crystals are needle shaped and have a surface area of at least 80 m2/g dry precipitate.
Dependencies are inferred from the claim text.