Etude structurale de la ZSM-5 échangée au chrome
Written by sctunisie no commentsCation exchange of the ZSM-5 by chromium in aqueous phase was studied. The study of the exchange shows that the ratio of exchange depends of the temperature, the nature of the anion of the chromium salt and initial concentration of chromium. The properties of the catalysts were identified by X-ray diffraction, scanning electron microscopy, X-ray fluorescence, TGA and ATD measurements. The results showed that a concentration higher than 0.2M Cr(NO3)3 leads to the presence of the chromium ions at the external surface of the ZSM-5.
Z. Lounis, F. Djafri, A.E.K. Bengueddach
ZSM-5; Ion Exchange; Chromium Catalysts; Bifunctional Catalysts. Redox zeolites
Pages 97-103
