Synthesis and characterization of a catalyst containing vanadium supported on alumina

This work describes the preparation, the characterization of the hysico chemical properties of catalyst containing vanadium supported on Al$_{2}$O$_{3}$, and study of its catalytic activity in the reaction of conversion of SO$_{2}$ to SO$_{3}$, 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$_{4}{}^{2-}$, K$_{2}$O.followed of calcination under-air with 450$^{\circ}$C. 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 V$_{2}$O$_{5}$/Al$_{2}$O$_{3}$ followed by infra-red shows the presence of coordinated species (Lewis acidity) about 1580, 1470 and 1452 cm$^{-1}$and protonic species (Brönsted acidity) characterized by vibrations infra-red about 1650 and 1620 cm$^{-1}$