Résumé:
Metal containing aluminophosphate molecular sieves MeAPOs (Me: Fe, Sn,
Co) are synthesized in AEL and AFI structure types by stat ic hydrothermal
crystal l izat ion. These materials are characterized by elemental analysis, X- ray
dif fract ion, SEM, N2 adsorpt ion and NH3 desorpt ion measurements and
thermogravimet ric analysis. Alkylat ion of benzene and other aromat ics by benzyl
chloride is invest igated over these sol ids and iron containing microporous
aluminophosphates showed both the highest activity and highest selectivity for this reaction.
Mössbauer spectroscopy and RPE analysis are investigated to study the isomorphous substitution
of Fe, Sn and Co in the aluminophosphate framework and explain the catalytic behaviour of these
materials.
