Oxygenates formed from ethanol during Fischer-Tropsch synthesis
Addition of /sup 14/C labeled ethanol to a syngas feed (H/sub 2//CO = 0.78) results in dehydrogenation to acetaldehyde to establish an equilibrium ratio of alcohol to aldehyde. In addition, ethyl acetate and acetal have been identified, using both gas chromatographic-mass spectroscopic and gas chromatographic-infrared techniques, as significant reaction products that, because of /sup 14/C content, are shown to be derived from the added ethanol. Alcohols with greater than two carbons are also formed from ethanol; their relative concentrations suggest that aldol condensation of acetaldehyde contributes to the overall reaction mechanism. In the stirred autoclave reactor, more ethanol is converted to other oxygenates than is incorporated into higher carbon number hydrocarbons; however, ethanol is a chain growth initiator. The data is consistent with significant accumulation of ethanol in the reactor above the concentration in the gas feed when octacosane is used as a solvent with a 10 wt% Fe on high surface area (700 m/sup 2//g) silica support. 21 references.
- Research Organization:
- Univ. of Louisville, KY
- DOE Contract Number:
- AC22-84PC70029
- OSTI ID:
- 5397523
- Journal Information:
- J. Catal.; (United States), Vol. 105:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ETHANOL
CATALYTIC REFORMING
FISCHER-TROPSCH SYNTHESIS
CHEMICAL REACTION KINETICS
ORGANIC OXYGEN COMPOUNDS
SYNTHESIS
ACETALDEHYDE
ALCOHOLS
CARBON 14
CARBON MONOXIDE
CATALYTIC EFFECTS
DEHYDROGENATION
GAS CHROMATOGRAPHY
HYDROGEN
INFRARED SPECTRA
IRON
LABELLED COMPOUNDS
MASS SPECTROSCOPY
REACTION INTERMEDIATES
ALDEHYDES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBON COMPOUNDS
CARBON ISOTOPES
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMATOGRAPHY
ELEMENTS
EVEN-EVEN NUCLEI
HYDROXY COMPOUNDS
ISOTOPES
KINETICS
LIGHT NUCLEI
METALS
NONMETALS
NUCLEI
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RADIOISOTOPES
REACTION KINETICS
REFORMER PROCESSES
SEPARATION PROCESSES
SPECTRA
SPECTROSCOPY
TRANSITION ELEMENTS
YEARS LIVING RADIOISOTOPES
010408* - Coal
Lignite
& Peat- C1 Processes- (1987-)