Process for the regeneration of metallic catalysts

Patent · Sat Jul 04 00:00:00 EDT 1981

OSTI ID:6324164

Windawi, H; Katzer, J R

A method for the regeneration of metallic hydrogenation catalysts poisoned by sulfur and/or carbon is claimed. The catalyst may be any of the metals, Ni, Rh, Pt, Ir, Pd, or Ru supported on a refractory oxide carrier such as ZrO/sub 2/ or Al/sub 2/O/sub 3/. The poisoned catalyst was contacted with oxygen gas in a concentration of about 1 to 10 ppM in an inert gas consisting of He, Ar, Xe, Kr, N/sub 2/ or air substantially free of oxygen. Regeneration was essentially complete when the total number of oxygen molecules passed through the poisoned catalyst bed was 10 to 20 times larger than the total number of hydrogen sulfide molecules supplied during the poisoning of the catalyst. The temperature of the catalyst bed was maintained in the range of about 300 to 500/sup 0/C during the regeneration. (BLM)

• Assignee: EDB-83-101381
• Patent Number(s): US 4250518
• OSTI ID: 6324164
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
IRIDIUM
METALS
METHANATION
NICKEL
NONMETALS
OXYGEN
PALLADIUM
PLATINUM
PLATINUM METALS
POISONING
REGENERATION
RHODIUM
RUTHENIUM
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENTS