Hydrodechlorination of tetrachloroethylene over vanadium-modified Pt/Al2O3catalysts

The influence of the addition of different amounts of vanadium on the activ ity and resistance to poisoning of a 0.5% Pt/Al2O3 catalyst used in the hyd rodechlorination of tetrachloroethylene was studied. Experiments carried ou t at 350 degreesC were devoted to compare the effect of different vanadium loads on the deactivation of the catalyst. A catalyst with 0.12% V and redu ced at 500 degreesC presents the best performance. The performances of this catalyst and the non-doped Pt/Al2O3 were compared at 250 degreesC in a lon ger experiment (85 h), resulting better the bimetallic catalyst.