Mechanism of promotion of iron Fischer-Tropsch catalysts: Quarterly report for period ending March 31, 1986

Technical Report · Wed Jan 01 04:00:00 EST 1986

DOI:https://doi.org/10.2172/6347489· OSTI ID:6347489

The Fischer-Tropsch reaction is a complex combination of many reactions. Among those that have been demonstrated to occur on the catalyst surface are CO dissociation, build-up of carbon chains by a polymerization process, desorption of products such as olefins and oxygen-containing compounds, water formation and its subsequent shift reaction to form CO/sub 2/, olefin hydrogenation, isomerization and reincorporation in the synthesis and, probably, other reactions yet to be identified and studied. The tracer technique, involving the feeding of /sup 14/C-labled compounds to the synthesis, is being used here in an effort to learn how catalyst additives and supports influence these reactions and determine the final product distribution. /sup 14/C labeled ethanol, when added to a CO/H/sub 2/ feed, undergoes dehydrogenation to establish essentially an equilibrium ethanol-acetaldehyde mixture. However, under the reaction conditions used, ethyl acetate and 1,1-diethoxyethane (actual) are significant products; the /sup 14/C label permits use to identify these products as being derived from ethanol. In addition, it appears that aldol condensation of acetaldehyde occurs to a minor extent. 28 refs., 17 figs., 1 tab.

• Research Organization: Louisville Univ. Research Foundation, Inc., KY (USA)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC22-84PC70029
• OSTI ID: 6347489
• Report Number(s): DOE/PC/70029-T9; ON: DE89010832
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ACETAL
ACETALDEHYDE
ACETALS
ACETATES
ADDITIVES
ALCOHOLS
ALDEHYDES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBON 14
CARBON ISOTOPES
CARBOXYLIC ACID SALTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHEMICAL REACTORS
CHROMATOGRAPHY
DOCUMENT TYPES
ELEMENTS
ETHANOL
ETHERS
EVEN-EVEN NUCLEI
FISCHER-TROPSCH SYNTHESIS
FLUIDS
GAS CHROMATOGRAPHY
GASES
HYDROXY COMPOUNDS
IRON
ISOTOPES
LABELLED COMPOUNDS
LIGHT NUCLEI
MASS SPECTRA
METALS
MINERALS
NUCLEI
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PROGRESS REPORT
PROMOTERS
RADIOISOTOPES
SEPARATION PROCESSES
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SOLUBILITY
SPECTRA
SYNTHESIS GAS
TRANSITION ELEMENTS
WAXES
YEARS LIVING RADIOISOTOPES
YIELDS