Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1976-02-05
1977-01-18
Gantz, Delbert E.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
208139, 208143, 252442, 252466B, 260673, C07C 304, C10G 2304, B01J 2708, B01J 2367
Patent
active
040039579
ABSTRACT:
Dehydrocyclizable hydrocarbons are converted to aromatics by contacting them at dehydrocyclization conditions with an acidic multi-metallic catalytic composite comprising a combination of catalytically effective amounts of a platinum group component, a rhenium component, a cobalt component, and a halogen component with a porous carrier material. The platinum group component, rhenium component, cobalt component, and halogen component 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 0.1 to about 5 wt. % cobalt, about 0.01 to about 2 wt. % rhenium, and about 0.1 to about 3.5 wt. % halogen. Moreover, the catalytically active sites induced by these metallic components are uniformly dispersed throughout the porous carrier material and these metallic components are present in the catalyst in carefully controlled oxidation states such that substantially all of the platinum group component is present therein in the elemental metallic state and substantially all of the rhenium and catalytically available cobalt components are present in the elemental metallic state or in a state which is reducible to the elemental metallic state under dehydrocyclization conditions, or in a mixture of these states. A specific example of dehydrocyclization method disclosed herein is a method for converting a feed mixture of n-hexane and n-heptane to a product mixture of benzene and toluene which involves contacting the feed mixture and a hydrogen stream with the acidic multimetallic catalyst disclosed herein at dehydrocyclization conditions.
REFERENCES:
patent: 2500146 (1950-03-01), Fleck et al.
patent: 2911357 (1959-11-01), Myers et al.
patent: 3109038 (1963-10-01), Myers
patent: 3789020 (1974-01-01), Carter et al.
patent: 3825487 (1974-07-01), Wilhelm
Gantz Delbert E.
Hoatson Jr. James R.
McBride Thomas K.
Page II William H.
Schmitkons G. E.
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