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Fe-silicalite with low concentration of iron was used in the study of the activation by high temperature nitridation (in the temperature range from 540°C to 700°C). Nitrided materials were characterized by means of FTIR and UV–Vis spectroscopy. It was found out, that by this high temperature pretreatment, Fe-silicalite undergoes structural changes – iron is extracted to extraframework positions and...
The catalytic performance of Fe-silicalite activated by gas reduction-nitridation (GRN) was studied in the direct ammoxidation of propane with molecular oxygen as the only oxidizing agent. It has been demonstrated that the presence of the reducing agent, propane, is indispensable in order to obtain active catalyst. Relatively mild conditions of the pretreatment, temperature 540°C, short time of the...
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