Zeolite-supported cobalt catalysts for the conversion of synthesis gas to hydrocarbon products
Three differently prepared cobalt/ZSM-5 catalysts were investigated with respect to physical and chemical properties and to activity and selectivity for conversion of synthesis gas. The catalyst preparations consisted of the following: (1) direct decomposition of C/sub 5/H/sub 5/Co(CO)/sub 2/ on ZSM-5, (2) impregnation of ZSM-5 with an aqueous solution of cobalt nitrate, and (3) physical admixture of precipitated cobalt oxide with ZSM-5. At about 3 wt % cobalt loading, the first catalyst showed higher dispersion, higher (H/sub 2/ + CO) conversion, and about 10 times higher yield of gasoline-range hydrocarbons (g/h) than the catalyst prepared by the other two methods. Some H/sub 2/ and CO chemisorption studies and magnetization measurements were conducted to measure the average particle diameter. Infrared studies of chemisorbed pyridine of these samples indicate that ion exchange of Co/sup 2 +/ for acidic protons occurs in organometallic-impregnated and aqueous solution-impregnated catalysts. 18 references, 6 figures, 4 tables.
- Research Organization:
- Dept. of Energy, Pittsburgh, PA
- OSTI ID:
- 5190141
- Journal Information:
- Ind. Eng. Chem., Prod. Res. Dev.; (United States), Vol. 23:5; Conference: 186. national meeting of the American Chemical Society, Washington, DC, USA, Aug 1983
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CATALYSTS
CHEMICAL PREPARATION
PERFORMANCE TESTING
FISCHER-TROPSCH SYNTHESIS
CARBON MONOXIDE
CATALYTIC EFFECTS
CHEMISORPTION
COBALT
HYDROCARBONS
HYDROGEN
PHYSICAL PROPERTIES
SYNTHESIS
SYNTHESIS GAS
ZEOLITES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
FLUIDS
GASES
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
METALS
MINERALS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SEPARATION PROCESSES
SORPTION
TESTING
TRANSITION ELEMENTS
010403* - Coal & Coal Products- Hydrogenation- (-1987)