Hydrocarbon conversion with a sulfided acidic multimetallic catalytic composite

Patent · Tue Apr 04 04:00:00 EST 1978

OSTI ID:6776040

Antos, G J

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 rhenium component, a halogen component, and a sulfur component with a porous carrier material. The platinum or palladium, rhodium, rhenium, 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. percent platinum or palladium metal, about 0.01 to about 2 wt. percent rhodium, about 0.01 to about 2 wt. percent rhenium, about 0.1 to about 3.5 wt. percent halogen, and about 0.01 to about 1 wt. percent 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 component is 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 rhenium and rhodium components are present therein in a sulfided state or in the elemental metallic state or in a reducible oxide state or in a mixture of these states. The sulfiding of the catalytic composite is performed prior to any contact of the composite with hydrocarbon and after substantially all or at least the platinum or palladium component has 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. percent sulfur. The resulting sulfided 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 4082651
• OSTI ID: 6776040
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HALOGENS
HYDROCRACKING
NONMETALS
PETROLEUM
PLATINUM COMPOUNDS
PLATINUM SULFIDES
PYROLYSIS
RHENIUM COMPOUNDS
RHENIUM SULFIDES
RHODIUM COMPOUNDS
RHODIUM SULFIDES
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS