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Fischer-Tropsch synthesis over iron catalysts: the use of reactive scavengers to identify reaction intermediates

Technical Report ·
OSTI ID:7065970
;
The synthesis of hydrocarbons from H/sub 2/ and CO was studied on a silica-supported iron catalyst. The synthesis was carried out at 1.54 atmospheres and 200 to 255/sup 0/C in a differential reactor. The working catalyst is realized by transforming Fe/sub 2/O/sub 3/ into a mixture of bulk carbides and iron under synthesis conditions. After the catalyst achieves a steady state condition pulses of a helium stream saturated with pyridine are injected into the reactant gas mixture. The reactor effluent is found to contain alkylpyridines. These are argued to result from pyridine reacting with the alkyl fragments which are formed on the catalyst surface from H/sub 2/ and CO. The distribution of alkylpyridines is related to the synthesis product distribution as a means of gaining insight into the synthesis mechanism. 10 figures, 1 table.
Research Organization:
Texas Univ., Austin (USA). Dept. of Chemical Engineering
DOE Contract Number:
AS05-80ER10720
OSTI ID:
7065970
Report Number(s):
DOE/ER/10720-4; CONF-821106-3; ON: DE82019549
Country of Publication:
United States
Language:
English

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AZINES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COHERENT SCATTERING
DATA
DIFFRACTION
ELEMENTS
EXPERIMENTAL DATA
FISCHER-TROPSCH SYNTHESIS
FLUIDS
GASES
HELIUM
HETEROCYCLIC COMPOUNDS
HIGH TEMPERATURE
HYDROGEN
INFORMATION
IRON COMPOUNDS
IRON OXIDES
KINETICS
MASS SPECTROSCOPY
MEDIUM PRESSURE
METHANATION
MINERALS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PYRIDINE
PYRIDINES
RADICALS
RARE GASES
REACTION INTERMEDIATES
REACTION KINETICS
SCATTERING
SCAVENGING
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SPECTROSCOPY
TIME DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION