Metal powderdous catalyst for hydrogenation processes
AssigneeDsm IP Assets B.V.
InventorsWerner Bonrath, Roman Goy, Jonathan Alan Medlock
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Abstract
The present invention relates to a metal powder catalyst and its use in the selective catalytic hydrogenation of organic starting materials comprising a carbon-carbon triple bond. The powder catalyst comprises a metal alloy carrier, wherein the metal alloy comprises (i) 55 weight-% (wt-%)-80 wt-%, based on the total weight of the metal alloy, of Co, and (ii) 20 wt-%-40 wt-%, based on the total weight of the metal alloy, of Cr, and (iii) 2 wt-%-10 wt-%, based on the total weight of the metal alloy, of Mo, and wherein the said metal alloy is coated by a metal oxide layer and impregnated with Pd, and is characterized in that the metal oxide layer comprises CeO2.
Claims9
A method for selective catalytic hydrogenation with hydrogen of an organic starting material comprising a carbon-carbon triple bond, wherein the method comprises subjecting the organic starting material to selective catalytic hydrogenation in the presence of hydrogen and powderous catalytic system which comprises a metal alloy carrier, wherein the metal alloy of the carrier comprises, based on total weight of the metal alloy:
- (i) 55 wt. % to 70 wt. % of Co,
- (ii) 20 wt. % to 35 wt. % of Cr,
- (iii) 4 wt. % to 10 wt. % of Mo, wherein
- the metal alloy is coated by a metal oxide layer which comprises a mixture of CeO2 and ZnO in a ratio of the CeO2 to the ZnO of 2:1 to 1:2, and wherein
- the metal oxide layer is impregnated with Pd.
A powderous catalytic system which comprises a metal alloy carrier, wherein the metal alloy of the carrier comprises, based on total weight of the metal alloy:
- (i) 55 wt. % to 70 wt. % of Co,
- (ii) 20 wt. % to 35 wt. % of Cr,
- (iii) 4 wt. % to 10 wt. % of Mo, wherein
- the metal alloy is coated by a metal oxide layer which comprises a mixture of CeO2 and ZnO in a ratio of the CeO2 to ZnO of 2:1 to 1:2, and wherein
- the metal oxide layer is impregnated with Pd.
Dependencies are inferred from the claim text.