Superactive multimetallic catalytic composite

Details Superactive multimetallic catalytic composite Superactive multimetallic catalytic composite

1978-05-18

1979-06-12

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252442, 252443, 252466PT, 252472, B01J 2708, B01J 2710, B01J 2336

Patent

active

041579895

ABSTRACT:
A novel superactive multimetallic hydrocarbon conversion catalytic composite comprises a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of a catalytically effective amount of a platinum group component which is maintained in the elemental metallic state. In a highly preferred embodiment, this novel catalytic composite also contains a catalytically effective amount of a halogen component. The platinum group component, pyrolyzed rhenium carbonyl component and optional halogen component are preferably present in the multimetallic catalytic composite in amounts, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal, about 0.01 to about 5 wt. % rhenium and about 0.1 to about 3.5 wt. % halogen. A key feature associated with the preparation of the subject catalytic composite is reaction of a rhenium carbonyl complex with a porous carrier material containing a uniform dispersion of a platinum group metal maintained in the elemental state, whereby the interaction of the rhenium moiety with the platinum group moiety is maximized due to the platinophilic (i.e. platinum-seeking) propensities of the carbon monoxide ligand used in the rhenium reagent.

REFERENCES:
patent: 3415737 (1968-12-01), Kluksdahl
patent: 3617520 (1971-11-01), Kluksdahl
patent: 3852190 (1974-12-01), Buss et al.
patent: 4012313 (1977-03-01), Buss et al.

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