The catalytic hydrolysis of dichlorodifluoromethane (CFC-12) was investigated over solid acid Ti(SO_4)_2. The catalytic activity decreased with the calcination temperature. When space velocity was 6 1 h~(-1) g-cat~(-1). the CPC-12 conversion at 310C over Ti(SO_4)_2 calcined at 350C remained about 98.5% during 360 h on stream. and the selectivity to by-products remained zero. The findings enlarged the scope of traditional catalyst systems for the CFCs decomposition. The catalytic hydrolysis of dichlorodifluoromethane (CFC-12) was investigated over solid acid Ti (SO_4) _2. The catalytic activity decreased with the calcination temperature. When space velocity was 6 1 h -1 g-cat -1 . The CPC-12 conversion at 310C over Ti (SO 4) 2 calcined at 350C with about 98.5% during 360 h on stream. and the selectivity to by-products remained zero. The findings bulgar the scope of traditional catalyst systems for the CFCs decomposition .