Relation of catalyst activity to sintering, carbon deposition, and sulfur poisoning for carbon monoxide hydrogenation by using commercial nickel catalysts

Conference · Mon Jan 01 04:00:00 EST 1979 · AIChE Natl. Meet.; (United States)

OSTI ID:6772915

Hawkins, R J; Hopper, J R

The relation of catalyst activity to sintering, carbon deposition, and sulfur poisoning for carbon monoxide hydrogenation by using commercial nickel catalysts, including the kieselguhr-supported Harshaw Ni-101, -104, and -108 and Girdler G-49B and the refractory-supported Girdler G-33, was studied in a flow reactor. The metal surface area on sintering at 900/sup 0/-1000/sup 0/F decreased linearly with sintering time (except for G-33 whose area first increased and then decreased after 11 hr), and the catalyst deactivation in CO methanation experiments at 550/sup 0/F and 4:1 H/sub 2//CO, was proportional to the metal area reduction. The amount of carbon deposited on the Ni-104 catalyst during CO methanation at 650/sup 0/F and 2:1 H/sub 2//CO remained constant at approx. 0.2Vertical Bar3< by wt for 5 hr and then increased exponentially, but the conversion of CO decreased linearly for up to 25 hr. On the addition of n-butyl mercaptan at 1 or 5 ppm sulfur into the reaction system at 550/sup 0/F and 4:1 H/sub 2/-CO, the weight of sulfur on the catalyst (Ni-104) reached a plateau value; CO conversion decreased from 11 to 8Vertical Bar3< and then stabilized after about ten hours on stream. However, at 25 ppm, sulfur deposition and catalyst deactivation increased steadily for 25 hr. Calculations showed that the maximum tolerance level for this catalyst is 16 ppm sulfur.

• Research Organization: Lamar Univ.
• OSTI ID: 6772915
• Report Number(s): CONF-790405-
• Conference Information: Journal Name: AIChE Natl. Meet.; (United States) Journal Volume: 10d
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
&amp; Peat-- Gasification
090121 -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
CARBON
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
DEACTIVATION
DEPOSITION
ELEMENTS
EXPERIMENTAL DATA
FABRICATION
HIGH TEMPERATURE
HYDROGENATION
INFORMATION
METALS
METHANATION
NICKEL
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
SINTERING
SULFUR
TRANSITION ELEMENTS