Activated and attenuated multimetallic catalytic composite

Details Activated and attenuated multimetallic catalytic composite Activated and attenuated multimetallic catalytic composite

1978-11-30

1980-07-01

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252442, 252443, 252466PT, 252473, B01J 2708, B01J 2710, B01J 2360

Patent

active

042105617

ABSTRACT:
A novel activated and attenuated multimetallic catalytic composite especially useful for converting hydrocarbons comprises a combination of a catalytically effective amount of a pyrolyzed ruthenium 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 and of a zinc 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 ruthenium carbonyl component, zinc 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. % of the uniformly dispersed platinum group metal, about 0.01 to about 2 wt. % of carbonyl-derived ruthenium, about 0.01 to about 5 wt. % zinc and about 0.1 to about 3.5 wt. % of halogen. A key feature associated with the preparation of the subject catalytic composite is reaction of a ruthenium carbonyl complex with a porous carrier material containing a uniform dispersion of zinc and of a platinum group metal maintained in the elemental state, whereby the interaction of the ruthenium 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 ruthenium reagent.

REFERENCES:
patent: 2662861 (1953-12-01), Riblett et al.
patent: 4061592 (1977-12-01), Buss
patent: 4137153 (1979-01-01), Antos

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