Methanation activity of catalysts formed by treating intermetallic compounds Ni/sub 5/Si/sub 2/, Ni/sub 2/Si, and Co/sub 2/Si with oxygen

Journal Article · Thu Dec 13 04:00:00 EST 1979 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100488a016· OSTI ID:6408984

Imamura, H; Wallace, W E

Carbon monoxide chemisorption and an X-ray diffraction study of the oxidized nickel/silicon and cobalt/silicon catalysts confirmed that the catalyst preparation procedure yielded nickel or cobalt on silica support. Methanation activity studies showed that metal sintering occurred at pretreatment temperatures above 450/sup 0/C, i.e., the surface area, carbon monoxide adsorption, and conversion decreased but turnover number remained constant as the catalyst oxidation temperature increased above 450/sup 0/C. At a reaction temperature of 205/sup 0/C, the highest turnover number (as molecules of methane formed) of the Ni/sub 5/Si/sub 2/ catalyst was 0.018/sec compared with 0.001/sec on conventional silica-supported nickel.

• Research Organization: Univ. of Pittsburgh
• OSTI ID: 6408984
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 83:25; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COBALT
COMPARATIVE EVALUATIONS
ELEMENTS
FABRICATION
KINETICS
METALS
METHANATION
MINERALS
NICKEL
NONMETALS
OXIDE MINERALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
REACTION KINETICS
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SINTERING
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
TEMPERATURE EFFECTS
TRANSITION ELEMENTS