Syngas conversion catalyst
AssigneeThe British Petroleum Company p.l.c.
InventorColin H. McAteer
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Abstract
A composition for use after reductive activation as a catalyst in the conversion of synthesis gas to hydrocarbons, which composition comprises as essential components (i) cobalt either as the elemental metal, the oxide or a compound thermally decomposable to the elemental metal and/or oxide and (ii) zinc in the form of the oxide or a compound thermally decomposable to the oxide.
Claims12
A composition of the use after reductive activation as a catalyst in the conversion of synthesis gas to hydrocarbons, which composition consists essentially of (i) cobalt either as the elemental metal, the oxide or a compound thermally decomposable to the elemental metal and/or oxide and (ii) zinc in the form of the oxide or a compound thermally decomposable to the oxide, said composition being obtained by a process comprising:
- (I) precipitating at a temperature in the range from 0 to 100.degree. C. the metals cobalt and zinc in the form of insoluble thermally decomposable compounds thereof from a solution of soluble compounds thereof using a precipitant comprising ammonium hydroxide, ammonium carbonate, ammonium bicarbonate, a tetraalkylammonium compound or an organic amine, and
- (II) recovering the precipitate obtained in step (I), the molar ratio of said soluble compounds of cobalt to zinc being in the range from 1:5 to 2:1.
A composition for the use after reductive activation as a catalyst in the conversion of synthesis gas to hydrocarbons, which composition consists essentially of (i) cobalt either as the elemental metal, the oxide or a compound thermally decomposable to the elemental metal and/or oxide and (ii) zinc in the form of the oxide or a compound thermally decomposable to the oxide, said composition being obtained by a process comprising:
- (I') bringing together in solution at a temperature below the boiling point of the solution soluble compounds of cobalt and zinc and a precipitant comprising either ammonium hydroxide, ammonium carbonate, ammonium bicarbonate, a tetraalkylammonium compound or an organic amine so as to form a precipitate, the cobalt, zinc and precipitant being brought together at a rate such that a substantially constant pH in the range from 6 to 9 is maintained, and
- (II') recovering the precipitate obtained in step (I), the molar ratio of said soluble compounds of cobalt to zinc being in the range from 1:5 to 2:1.
Dependencies are inferred from the claim text.