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:5018705

Ekerdt, J G; Bell, A T

Recent studies of Fischer-Tropsch synthesis over Ru catalysts have suggested that the growth of hydrocarbon chains may involve the addition of methylene groups to either alkylidene or alkyl species present on the catalyst surface. In the present investigation an attempt was made to detect the growing chains by their reaction with an olefin, an approach suggested by recent experiments with metal complexes containing alkylidene or alkyl ligands. The addition of ethylene to the feed of CO and H/sub 2/ enhanced the formation of propylene, while the addition of cyclohexene led to the formation of methyl- and ethylcyclohexane and ethyl-, propyl-, and butylcyclohexane. While the observed reaction products did not permit an unambiguous distinction between the two possible surface species, the distribution of products obtained from cyclohexene addition and the influence of cyclohexene on the production of normal alkanes, suggests that the olefin reacts with species involved in chain propagation. 4 figures. 4 tables.

• Research Organization: Univ. of California, Berkeley
• OSTI ID: 5018705
• 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
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKANES
ALKENES
ALKYL RADICALS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CYCLOALKANES
CYCLOALKENES
CYCLOHEXANE
ELEMENTS
ETHYLENE
FISCHER-TROPSCH SYNTHESIS
HYDROCARBONS
HYDROGEN
METALS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
PROPYLENE
RADICALS
REACTION INTERMEDIATES
REFRACTORY METALS
RUTHENIUM
SYNTHESIS
TRANSITION ELEMENTS