Acidic multimetallic catalytic composite

Details Acidic multimetallic catalytic composite Acidic multimetallic catalytic composite

1979-06-08

1980-11-18

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252442, B01J 2708, B01J 2710

Patent

active

042344590

ABSTRACT:
An acidic multimetallic catalytic composite especially useful in converting hydrocarbons comprises a combination of catalytically effective amounts of a platinum group component, a cobalt component, a tantalum component, and a halogen component with a porous carrier material. The platinum group, cobalt, tantalum, and halogen components are present in the multimetallic catalyst in amounts respectively, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal, about 0.05 to about 5 wt. % cobalt, about 0.01 to about 5 wt. % tantalum, and about 0.1 to about 3.5 wt. % halogen. Moreover, these metallic components are uniformly dispersed throughout the porous carrier material in carefully controlled oxidation states such that substantially all of the platinum group component is present therein in the elemental metallic state, substantially all of the catalytically available cobalt component is present in the elemental metallic state or in a state which is reducible to the elemental metallic state under hydrocarbon conversion conditions, or in a mixture of these states, while substantially all of the tantalum component is present therein in an oxidation state above that of the elemental metal.

REFERENCES:
patent: 2911357 (1959-11-01), Myers et al.
patent: 3799867 (1974-03-01), Cardwell et al.
patent: 4036741 (1977-07-01), Pollitzer et al.

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