J. Phys. IV France 123 (2005) 281-284
Synthesis and characterization of a catalyst containing vanadium supported on aluminaN. Aderdour, K. Nohair, M. Baalala, M. Diouri and M. Bensitel
Laboratory of Catalysis and Corrosion of Materials, Faculty of Science, University Chouaib Doukkali, 24000 El jadida, Maroc
This work describes the preparation, the characterization of the hysico chemical properties of catalyst containing vanadium supported on Al2O3, and study of its catalytic activity in the reaction of conversion of SO2 to SO3, the synthesis of the alumine was carried out by hydrolysis of isopropoxyde aluminium in solution of isopropanol. Vanadium is introduced by impregnation with porous volume in several stages. The same technique is used for the SO 42-, K2O.followed of calcination under-air with 450C. This solid is characterized by DRX, IR and analyzes elementary. IR highlighted the presence of the surface sulphated species, adsorption of the molecule probes 2,6-dimethylpyridine on V2O5/Al2O3 followed by infra-red shows the presence of coordinated species (Lewis acidity) about 1580, 1470 and 1452 cm-1and protonic species (Brönsted acidity) characterized by vibrations infra-red about 1650 and 1620 cm-1.
© EDP Sciences 2005