Mechanism of promotion of iron Fischer-Tropsch catalysts: Final report

Technical Report · Thu Dec 31 00:00:00 EST 1987

DOI:https://doi.org/10.2172/6347542· OSTI ID:6347542

Tau, L. M.; Dabbagh, H.; Chawla, B.; Davis, B. H.

The kinetic isotope method (KIM) has been utilized in a study designed to determine the way in which promoters for iron catalysts impact the variety of primary and secondary reactions in the Fischer-Tropsch synthesis (FTS). The KIM involves the addition of known or suspected intermediates to the synthesis gas feed. In order to follow the conversion of the added compound, and the products formed as a result of the addition, the added compound is labeled with a radioactive isotope of carbon. An analysis of the Fischer-Tropsch synthesis products readily permits one to identify those compounds that are derived from the added compound. Using this technique, results were obtained with unpromoted iron, iron promoted by Al/sub 2/O/sub 3/, ThO/sub 2/, ZrO/sub 2/, and SiO/sub 2/, and alkali promoted iron catalysts. A combination of gas chromatographic, dry column chromatographic and liquid chromatographic techniques allowed us to determine the /sup 14/C present in compounds over the C/sub 1/--C/sub 22/ range in the alkane and alkene fractions. A continuous stirred tank reactor (CSTR) was used for most of the experimental studies. 108 refs., 100 figs., 6 tabs.

• Research Organization: Kentucky Univ., Lexington (USA). Center for Applied Energy Research
• DOE Contract Number: AC22-84PC70029
• OSTI ID: 6347542
• Report Number(s): DOE/PC/70029-T1; ON: DE89009555
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

10 SYNTHETIC FUELS
ALUMINIUM OXIDES
CATALYTIC EFFECTS
CALCIUM
FISCHER-TROPSCH SYNTHESIS
CHEMICAL REACTION KINETICS
IRON
IRON OXIDES
POTASSIUM
PROMOTERS
SILICA
THORIUM OXIDES
ZIRCONIUM OXIDES
ALCOHOLS
ALKANES
ALKENES
CARBON 14
CARBONYLATION
GAS CHROMATOGRAPHY
HYDROCARBONS
LABELLED COMPOUNDS
PROGRESS REPORT
REACTION INTERMEDIATES
SEPARATION PROCESSES
SPECIFICITY
SURFACE AREA
SYNTHESIS GAS
TRACER TECHNIQUES
YIELDS
ACTINIDE COMPOUNDS
ALKALI METALS
ALKALINE EARTH METALS
ALUMINIUM COMPOUNDS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBON ISOTOPES
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMATOGRAPHY
DOCUMENT TYPES
ELEMENTS
EVEN-EVEN NUCLEI
FLUIDS
GASES
HYDROXY COMPOUNDS
IRON COMPOUNDS
ISOTOPE APPLICATIONS
ISOTOPES
KINETICS
LIGHT NUCLEI
METALS
MINERALS
NUCLEI
ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
RADIOISOTOPES
REACTION KINETICS
SILICON COMPOUNDS
SILICON OXIDES
SURFACE PROPERTIES
THORIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
YEARS LIVING RADIOISOTOPES
ZIRCONIUM COMPOUNDS
090121* - Hydrocarbon Fuels- Chemical Synthesis- (1976-1989)