Hydrocarbon conversion with a sulfided acidic multimetallic catalytic composite

Patent · Tue May 23 04:00:00 EDT 1978

OSTI ID:6570636

Hayes, J C

Hydrocarbons are converted by contacting them at hydrocarbon conversion conditions with a sulfided acidic multimetallic catalytic composite comprising a combination of catalytically effective amounts of a platinum or palladium component, a rhodium component, a germanium component, a halogen component, and a sulfur component with a porous carrier material. The platinum or palladium, rhodium, germanium, halogen, and sulfur 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 or palladium metal, about 0.01 to about 2 wt % rhodium, about 0.01 to about 5 wt % germanium, about 0.1 to about 3.5 wt % halogen, and about 0.01 to about 1 wt % sulfur. Moreover, the metallic components are uniformly dispersed throughout the porous carrier material in carefully controlled oxidation states such that substantially all of the platinum or palladium and rhodium components are present therein in a sulfided state or in a mixture of the sulfided state and the elemental metallic state and such that substantially all of the germanium component is present therein in an oxidation state above that of the elemental metal--typically, as germanium oxide. The sulfiding of the catalytic composite is performed prior to any contact of the composite with hydrocarbon and after substantially all of the platinum or palladium and rhodium components have been reduced to the elemental metallic state by treatment with a sulfiding gas at conditions selected to incorporate about 0.01 to about 1 wt % sulfur. The resulting sulfided and selectively prereduced catalyst has the capability of diminishing undesired demethylation and other hydrogenolysis reactions during initial operation of the process and markedly increasing the overall stability of the process.

• Assignee: UOP Inc.
• Patent Number(s): US 4090952
• OSTI ID: 6570636
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYSTS
CATALYTIC CRACKING
CHALCOGENIDES
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
FUELS
GASOLINE
GERMANIUM ADDITIONS
GERMANIUM ALLOYS
HALIDES
HALOGEN COMPOUNDS
HYDROCARBONS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PALLADIUM ADDITIONS
PALLADIUM ALLOYS
PERFORMANCE
PETROLEUM PRODUCTS
PLATINUM METAL ALLOYS
PYROLYSIS
RHODIUM ADDITIONS
RHODIUM ALLOYS
SULFIDES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES