Evidence for intermediates involved in Fischer-Tropsch synthesis over Ru

Journal Article · Sat Mar 01 04:00:00 EST 1980 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(80)90416-9· OSTI ID:6318522

Ekerdt, J G; Bell, A T

Evidence for intermediates involved in Fischer-Tropsch synthesis over Ru was obtained by adding 15 mm Hg ethylene to a feed of 180 mm Hg of carbon monoxide at a 2:1 hydrogen/carbon monoxide ratio and 191/sup 0/C, or by adding 0.5 mmole pulses of cyclohexene to the reaction of 177 mm Hg carbon monoxide at a 3:1 hydrogen/carbon monoxide ratio and 225/sup 0/C. Ethylene addition increased the propylene concentrations in the products, and cyclohexene addition produced 1-methylcyclohexene, 3-methylcyclohexene, and ethylcyclohexane which are not produced in its absence. These products suggested the formation and presence on the catalyst of methyl and/or methylene groups. In the presence of cyclohexene, the formation of long-chain alkanes, presumably formed via methylene group addition, decreased more rapidly with increasing chain length than in the absence of cyclohexene; this suggested that the surface species reacting with cyclohexene were methylene groups.

• Research Organization: Univ. of California, Berkeley
• OSTI ID: 6318522
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 62:1; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ALKANES
ALKENES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CYCLOALKENES
ELEMENTS
ETHYLENE
FISCHER-TROPSCH SYNTHESIS
HIGH TEMPERATURE
HYDROCARBONS
LOW PRESSURE
METALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
PROPYLENE
QUANTITY RATIO
REACTION INTERMEDIATES
RUTHENIUM
SYNTHESIS
TRANSITION ELEMENTS