Activity of several molybdenum compounds for the methanation of CO
Several molybdenum compounds - oxides, sulfide, metal, carbide, and nitride - were prepared, and their catalytic properties in the methanation of CO at 350/sup 0/C were investigated and compared with those of nickel and iron. The initial specific activities, i.e., rates per unit surface area of catalyst, decreased in the following sequence: Ni > Mo carbide > Mo metal > Mo nitride > MoO/sub 2/ > MoS/sub 2/ > MoO/sub 3/. The rate of aging, loss in activity for methanation, decreased in the following way: Fe > Mo carbide > Mo metal > Ni > MoS/sub 2/ approx. = Mo nitride > MoO/sub 2/. The zero-valent molybdenum compounds produced much larger amounts of C/sub 2/ and C/sub 3/ hydrocarbons than MoO/sub 2/ and MoS/sub 2/, and about the same amount as iron. Nickel produced the smallest amount of higher hydrocarbons. The molybdenum compounds except MoS/sub 2/ and MoO/sub 3/ had higher activities for the water-gas-shift reaction than nickel and iron. Molybdenum compounds were as active in 1H/sub 2/ + 1CO gas as in 3H/sub 2/ + 1CO feed; nickel and iron were substantially less active in the CO-rich gas. 9 figures, 3 tables.
- Research Organization:
- McMaster Univ., Hamilton, Ontario
- OSTI ID:
- 6992448
- Journal Information:
- J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 63:2; ISSN JCTLA
- Country of Publication:
- United States
- Language:
- English
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10 SYNTHETIC FUELS
CARBIDES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
HIGH TEMPERATURE
IRON
METALS
METHANATION
MOLYBDENUM
MOLYBDENUM CARBIDES
MOLYBDENUM COMPOUNDS
MOLYBDENUM NITRIDES
MOLYBDENUM OXIDES
MOLYBDENUM SULFIDES
NICKEL
NITRIDES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PNICTIDES
REFRACTORY METALS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
WATER GAS PROCESSES