Ultrafine iron oxide catalyst. Characterization by high resolution electron microscopy
Conference
·
OSTI ID:559981
- Univ. of Kentucky, Lexington, KY (United States)
- Oak Ridge National Lab., TN (United States)
The Fischer-Tropsch (FT) synthesis (a process known as {open_quotes}indirect liquefaction{close_quotes}) has been known for several years to produce hydrocarbon fuels. To effect the conversion of CO and H{sub 2} mixtures to hydrocarbon fuels, iron or cobalt catalysts are commonly used. The chemical nature of these catalysts undergoes changes during their residence time on stream. In the present investigation an ultrafine iron oxide catalyst was used for the FT synthesis. This catalyst was pretreated at 270{degrees}C in CO, prior to being used as a catalyst in a slurry phase reactor. Samples were withdrawn at various residence times on stream and analyzed using a Hitachi HF2000 electron microscope. Lattice fringe images were obtained primarily for Fe{sub 3}O{sub 4} phase. Large crystals of rectangular shape were also observed.
- OSTI ID:
- 559981
- Report Number(s):
- CONF-970443--
- Country of Publication:
- United States
- Language:
- English
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