Hydroisomerization catalyst
AssigneeHaldor TopsøE A/S
InventorMarie GRILL
Life of this patent
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Abstract
The present disclosure relates to a precursor for a catalytically active material or a catalytically active material comprising platinum, a molecular sieve and a metal oxide support, characterized in at least 80%, 90% or 95% of said platinum being dispersed on said molecular sieve and at least 80%, 90% or 95% of said platinum being dispersed in clusters having a size below 2 nm or 1 nm, as well as a method of producing such materials and process for hydroisomerization involving such materials. The disclosure has the associated benefit of such a catalytically active material being highly active and selective towards hydroisomerization.
Claims11
A precursor for a catalytically active material or a catalytically active material comprising platinum, a molecular sieve and a metal oxide support, wherein at least 80% of said platinum being dispersed on said molecular sieve and at least 80% of said platinum being dispersed in clusters having a size below 2 nm.
A precursor for a catalytically active material or a catalytically active material comprising platinum, a molecular sieve and a metal oxide support, wherein platinum being dispersed such that at least 80% of the platinum surface area is found in clusters on said molecular sieve and further wherein platinum being dispersed such that at least 80% of the platinum surface area is found in clusters in clusters having a size below 2 nm.
A precursor for a catalytically active material or a catalytically active material comprising platinum, a molecular sieve and a metal oxide support, wherein platinum being dispersed such that at least 80% of the platinum mass is found in clusters on said molecular sieve and further wherein platinum being dispersed such that at least 80% of the platinum mass is found in clusters in clusters having a size below 2 nm.
A method for producing a precursor for a catalytically active material involving the steps of:
- a) forming a support paste by combining alumina with a molecular sieve
- b) extruding or pelletizing said support paste, forming support particles,
- c) impregnating said support particles by incipient wetness impregnation with a solution of platinum salt comprising an organic additive such as citric acid, lactic acid or formic acid, providing catalyst precursor
- d) drying said catalyst precursor at a temperature of 120° C. to 200° C. in air
Dependencies are inferred from the claim text.