ZEOLITE SUPPORTED IRON OXIDE AS CATALYST OR CATALYST PRECURSOR FOR HYDROCARBON CONVERSION REACTIONS.

Article abstract of DOI:10.1002/bbpc.19860900415

When NaY saturated at room temperature with iron pentacarbonyl, is oxidized at room temperature in a very diluted oxygen flow, a zeolite encaged Fe//2O//3-phase is obtained as shown by Moessbauer spectroscopy, electron microscopy and X-ray diffraction. This catalyst contains 10% by weight of iron and serves as a good precursor of a Fischer-Tropsch (F. T. ) catalyst. Unfortunately, the Fe//2O//3 phase is unstable under F. T. conditions, since it is shown that the iron phase migrates out of the zeolite matrix during reaction. This encaged iron oxide phase can be hydrogen reduced giving finely dispersed and zeolite encaged iron, as is shown by physical and chemical methods. This system is a stable and active hydrogenolysis catalyst. Its selectivity is influenced by both particle size and support effects.