Attenuated superactive multimetallic catalytic composite

Details Attenuated superactive multimetallic catalytic composite Attenuated superactive multimetallic catalytic composite

1980-10-15

1982-01-26

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252472, 252466PT, B01J 2708, B01J 2710, B01J 2362

Patent

active

043127894

ABSTRACT:
A novel attenuated superactive multimetallic catalytic composite especially useful for converting hydrocarbons comprises a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of catalytically effective amounts of a platinum group component, which is maintained in the elemental metallic state during the incorporation and pyrolysis of the rhenium carbonyl component, and of a tin component. 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, tin 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, about 0.005 to about 5 wt. % tin 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 tin component and of a platinum group component 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 ligands associated with the rhenium reagent.

REFERENCES:
patent: 3790473 (1974-02-01), Rausch
patent: 3801498 (1974-04-01), Rausch
patent: 3960711 (1976-06-01), Antos et al.
patent: 4157989 (1979-06-01), Antos

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