Selectivity to olefins of Fe/SiO{sub 2}-MgO catalysts in the Fischer-Tropsch reaction
- Centro de Investigacion y Desarrollo en Procesos Cataliticos, La Plata (Argentina); and others
SiO{sub 2} covered with MgO has been used as support of iron catalysts in the Fischer-Tropsch reaction. Catalysts of 5% (w/w) iron concentration and 2, 4, and 8% (w/w) of MgO on SiO{sub 2} were prepared. Selective chemisorption of CO, volumetric oxidation, and Moessbauer spectroscopy were used to characterize the type of iron species and the metallic crystal sizes. MgO covers the SiO{sub 2} surface and modifies the metallic crystal size. The activity to total hydrocarbons increases with the amount of MgO added. An optimal concentration of about 4% (w/w) was found to have the highest selectivity to olefins. 45 refs., 13 figs., 3 tabs.
- OSTI ID:
- 471610
- Journal Information:
- Journal of Catalysis, Vol. 161, Issue 1; Other Information: PBD: Jun 1996
- Country of Publication:
- United States
- Language:
- English
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