Deactivation by carbon of nickel, nickel-ruthenium, and nickel-molybdenum methanation catalysts

Journal Article · Wed Sep 01 04:00:00 EDT 1982 · Ind. Eng. Chem., Prod. Res. Dev.; (United States)

DOI:https://doi.org/10.1021/i300007a008· OSTI ID:6270620

Moeller, A D; Bartholomew, C H

An investigation of the effects of carbon deposits on the deactivation of Al/sub 2/O/sub 3/-supported Ni, Ni-Ru, Ni-Mo, and Ni-Mo-Cu catalysts during high-temperature, combined shift-methanation employed activity-time measurements over a period of 24 hr at 842/sup 0/F and 20 and 377 psi in a fixed-bed reactor and at 20 psi in a fluidized-bed reactor. The results established that Ni and Ni-Ru are significantly more resistant to deactivation by carbon deposits than Mo-containing catalysts. Furthermore, Ni-Mo-Cu deactivates more rapidly than Ni-Mo in a fluidized bed at 138 kPa and in a fixed bed at 2600 kPa. Regenerating these catalysts in air at 572/sup 0/F restores their specific intrinsic activities but causes significant loss of metal surface area. From these results, researchers developed a model for use in estimating catalyst life under carbon-depositing conditions.

• Research Organization: Brigham Young Univ., Provo, UT
• OSTI ID: 6270620
• Journal Information: Ind. Eng. Chem., Prod. Res. Dev.; (United States), Journal Name: Ind. Eng. Chem., Prod. Res. Dev.; (United States) Vol. 21; ISSN IEPRA
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ALLOYS
CARBON
CATALYSTS
CHEMICAL REACTIONS
COPPER ALLOYS
DEACTIVATION
ELEMENTS
FLUIDIZED BED
METALS
METHANATION
MOLYBDENUM ALLOYS
NICKEL
NICKEL ALLOYS
NONMETALS
PLATINUM METAL ALLOYS
RUTHENIUM ALLOYS
TRANSITION ELEMENTS