Iron alloy Fischer-Tropsch catalysts. V. FeCo on Y zeolite

Journal Article · Wed Jan 01 04:00:00 EST 1986 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(86)90048-5· OSTI ID:5297967

Lin, T; Schwartz, L H; Butt, J B

A series of Fe, Co, and FeCo catalysts on Y-zeolite support, prepared both by ion exchange and impregnation, has been investigated and compared with a previously reported series supported on wide-pore SiO/sub 2/. Characterization methods were X-ray diffraction, H/sub 2/ and CO chemisorption, Moessbauer spectroscopy, and atomic absorption. The oxidation, reduction, and carburization behavior of the iron-containing catalysts were observed by Moessbauer spectroscopy. The reversibility of FeY (ion exchanged) in oxidation-reduction cycles was confirmed. The ion-exchanged catalysts (FeY, FeCoY) do not show any iron metal, or alloy or carbide phase after reduction or attempted carburization. In contrast with prior results with silica-supported Fe and FeCo, where there appear to be significant differences, Fe/HY (impregnated) and FeCo/HY appear quite similar in characterization by Moessbauer spectroscopy and in reaction behavior. A 1/1:CO/H/sub 2/ feed was used to investigate the Fischer-Tropsch reaction at 1 atm and 523 K. Some additional runs were made at a total pressure of 13.6 atm. As in prior studies it was found that the CO turnover frequency in general decreases with increasing CO conversion. A higher selectivity for higher molecular weight products is found for HY-supported catalysts, and in all cases an approximate behavior in accord with the Schultz-Anderson distribution was observed. 23 references.

• Research Organization: Northwestern Univ., Evanston, IL (USA)
• OSTI ID: 5297967
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 97:1; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010408* -- Coal
Lignite
& Peat-- C1 Processes-- (1987-)
ABSORPTION SPECTROSCOPY
ALLOYS
BIMETALS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CARBURIZATION
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PROPERTIES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISORPTION
COBALT
COBALT ALLOYS
COHERENT SCATTERING
DIFFRACTION
ELEMENTS
FISCHER-TROPSCH SYNTHESIS
HARDENING
HYDROGEN
HYDROGENATION
INORGANIC ION EXCHANGERS
ION EXCHANGE
ION EXCHANGE MATERIALS
IRON
IRON ALLOYS
KINETICS
MATERIALS
METALS
METHANATION
MINERALS
MOESSBAUER EFFECT
NONMETALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
REDUCTION
SCATTERING
SEPARATION PROCESSES
SORPTION
SPECTROSCOPY
SURFACE HARDENING
SURFACE TREATMENTS
TRANSITION ELEMENTS
X-RAY DIFFRACTION
ZEOLITES