Magnetic and Moessbauer characterization of iron/zeolite catalysts and syngas conversion studies

Thesis/Dissertation · Sat Jan 01 00:00:00 EST 1983

OSTI ID:5713656

Oskooie-Tabrizi, M M

Bifunctional catalysts containing the medium pore (0.6 nm) zeolite and Group VIII metals, such as Fe or (Fe + Co), are of considerable interest for the conversion of syngas (synthesis gas; H/sub 2/ + CO) to gasoline range (C/sub 5/ - C/sub 11/) hydrocarbons. Various synthetic zeolites used in this study consisted of acidic zeolites, such as H-ZSM-5 and H-mordenite, and a non-acidic zeolite, namely, Silicalite. This investigation was undertaken to: 1) study the effect of the nitrate and carbonyl impregnated methods on the dispersions of Fe; 2) see if the above combinations have any marked effect on the syngas conversion; and explore if there is any metal-support interaction between the Fe clusters and the varying number of acid sites in zeolites, especially with respect to the mordenites. Iron was chosen in this study for a variety of reasons, such as its technological relevance in the commercial Fischer-Tropsch synthesis and its lower cost, as compared with the cost of other transition metals. The Fe/zeolite catalysts were characterized by in-situ magnetization, and Moessbauer techniques. IR spectroscopy was also used in investigating H-mordenites. These catalysts were also tested for their Fischer-Tropsch activity, that is, for the syngas conversion to gasoline range hydrocarbons.

• OSTI ID: 5713656
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

10 SYNTHETIC FUELS
IRON
CATALYTIC EFFECTS
SYNTHESIS GAS
METHANATION
SYNTHETIC FUELS
LIQUID FUELS
ZEOLITES
CATALYSIS
FISCHER-TROPSCH SYNTHESIS
GASOLINE
HYDROCARBONS
INFRARED SPECTRA
MOESSBAUER EFFECT
MORDENITE
CHEMICAL REACTIONS
ELEMENTS
FLUIDS
FUELS
GASES
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
METALS
MINERALS
ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
SILICATE MINERALS
SPECTRA
TRANSITION ELEMENTS
090121* - Hydrocarbon Fuels- Chemical Synthesis- (1976-1989)