The effect of Pd, Pt, Rh and the bimetallic PdPt (Pd/Pt=4) as active phases for the gas-phase hydrodechlorination of 1,2 dichloroethane was studied. An Al₂O₃-TiO₂ mixed oxide with atomic ratio Al/Ti=25 (AT) and Al₂O₃ (A) were used as carriers. These materials were prepared by the sol-gel method and characterized by nitrogen physisorption to obtain their textural properties (BET Area, pore volume & average pore diameter). Active phases were impregnated with a metallic load of 1wt.-%. Reactions were carried out in a fixed-bed differential reactor at 250 °C and atmospheric pressure. Titania-modified support showed a BET area of 422 m²/g slightly higher than A (374 m²/g). Reaction rate for tested supported AT catalysts resulted in order of activity as follows Pt < Rh < Pd < PdPt and in terms of selectivity towards non-chlorinated compounds the order was Pd < Pt < PdPt < Rh. The PdPt/AT catalyst presented a catalytic activity 15% higher than PdPt/A.