Evidence for alkyl intermediates during Fischer-Tropsch synthesis and their relation to hydrocarbon products

Journal Article · Sun Apr 01 04:00:00 EST 1984 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(84)90369-5· OSTI ID:7066109

Wang, C J; Ekerdt, J G

Fisher-Tropsch synthesis mechanisms have been postulated in which alkyl fragments are both the chain-growing intermediate and the precursor to hydrocarbon products. The conversion of CO/H/sub 2/ into small alkyl fragments was investigated by scavenging C/sub 1/-C/sub 3/ alkyl species from the surface of an iron catalyst during Fischer-Tropsch synthesis. The experiments were performed in a steady-state mode revealing that pyridine did not inhibit or poison the Fischer-Tropsch reaction, rather it suppressed the overall rate slightly. Scavenged ..cap alpha..-alkylpyridine distributions were dependent upon synthesis variables and displayed a dependence which was proportional to the dependence upon synthesis variables and displayed a dependence which was proportional to the dependence of C/sub 1/-C/sub 3/ Fischer-Tropsch products. These dependences are used to demonstrate that alkyl fragments are the immediate precursors to Fischer-Tropsch products.

• Research Organization: Univ. of Texas, Austin
• OSTI ID: 7066109
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 86:2; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
AZINES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
FISCHER-TROPSCH SYNTHESIS
HETEROCYCLIC COMPOUNDS
HYDROGEN
IRON
KINETICS
METALS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PYRIDINES
REACTION KINETICS
TRANSITION ELEMENTS