Process for the regeneration of metallic catalysts

Patent · Mon Apr 06 23:00:00 EST 1981

OSTI ID:6429299

Katzer, J R; Windawi, H

A method for the regeneration of metallic hydrogenation catalysts from the class consisting of Ni, Rh, Pd, Ir, Pt and Ru poisoned with sulfur, with or without accompanying carbon deposition, comprises exposing the catalyst to oxygen gas in a concentration of about 1-10 ppM, intermixed with an inert gas of the group consisting of He, Ar, Xe, Kr, N/sub 2/ and air substantially free of oxygen to an extent such that the total oxygen molecule throughout is in the range of about 10 to 20 times that of the hydrogen sulfide molecular exposure producing the catalyst poisoning while maintaining the temperature in the range of about 300/sup 0/ to 500/sup 0/ C.

• Assignee: Delaware, University Of
• Patent Number(s): US 4260518
• OSTI ID: 6429299
• Country of Publication: United States
• Language: English

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CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROGENATION
IRIDIUM
METALS
METHANATION
NICKEL
NONMETALS
OXYGEN
PALLADIUM
PLATINUM
PLATINUM METALS
REFRACTORY METALS
REGENERATION
RHODIUM
RUTHENIUM
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENTS