Hydrogenation of carbon monoxide over alkali metal/graphite intercalates. Reaction selectivity and catalyst deactivation characteristics. [Alkali metal/graphite intercalates]

Journal Article · Thu Feb 01 04:00:00 EST 1979 · J. Catal.; (United States)

OSTI ID:7066029

Rosynek, M P; Winder, J B

Sodium graphite (NaC/sub 64/), potassium graphite (KC/sub 6/), and potassium graphite containing 4.5Vertical Bar3< by wt of iron (KFeC) were prepared in situ in a closed-loop recycle reactor and tested for their activity for carbon monoxide hydrogenation at 300/sup 0/C, a 4:1 hydrogen/carbon monoxide ratio, and 700 mm Hg total initial pressure. On NaC/sub 64/, 5-15Vertical Bar3< of the carbon monoxide reacted formed methane, 60-65Vertical Bar3< formed C/sub 2/ compounds, and 25-30Vertical Bar3< formed C/sub 3/ or higher products. Both alkanes and alkenes were formed. On KC/sub 8/, ethane accounted for 80-85Vertical Bar3< of the reacted carbon monoxide, methane for 10-15Vertical Bar3<, and propane for approx. 5Vertical Bar3<. On KFeC, methane was the main product (60-80Vertical Bar3<) and the balance of the converted carbon monoxide was mostly ethane. No carbon dioxide or other oxygen-containing products were detected for any of these catalysts. The catalysts deactivated rapidly owing to reactions of alkali metals with the produced water, in a manner which suggested that only the exposed edges of the layered crystallites were active and that interlayer penetration by carbon dioxide is minimal. The high selectivity for C/sub 2/ compounds was attributed to the regular spacing of the active sites at the exposed edges.

• Research Organization: Texas A and M Univ.
• OSTI ID: 7066029
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 56:2; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

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10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical &amp; Physicochemical Properties-- (-1987)
ALKALI METALS
ALKANES
CARBON
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHEMICAL REACTORS
COMPARATIVE EVALUATIONS
DATA
DEACTIVATION
ELEMENTAL MINERALS
ELEMENTS
ETHANE
EXPERIMENTAL DATA
GRAPHITE
HYDROCARBONS
HYDROGENATION
INFORMATION
IRON COMPOUNDS
METALS
METHANE
MINERALS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POTASSIUM
PROPANE
SODIUM
THERMODYNAMIC ACTIVITY
TRANSITION ELEMENT COMPOUNDS
YIELDS