a process for the catalytic fluorination of hydrochlorocarbons and hydrochlorofluorocarbons in the liquid phase . the process is useful for fluorinating hydrochloropropanes , hydrochlorofluoropropanes , hydrochloropropenes and hydrochlorofluoropropenes and most particularly useful for fluorinating 1 , 1 , 1 , 3 , 3 - pentachloropropane to 1 , 1 , 1 , 3 , 3 - pentafloropropane . suitable catalysts include a pentavalent molybdenum halide ; a tetravalent tin halide ; a tetravalent titanium halide ; a mixture of a pentavalent tantalum halide with a tetravalent tin halide ; a mixture of a pentavalent tantalum halide with a tetravalent titanium halide ; a mixture of a pentavalent niobium halide with a tetravalent tin halide ; a mixture of a pentavalent niobium halide with a tetravalent titanium halide ; a mixture of a pentavalent antimony halide with a tetravalent tin halide ; a mixture of a pentavalent antimony halide with a tetravalent titanium halide ; a mixture of a pentavalent molybdenum halide with a tetravalent tin halide ; a mixture of a pentavalent molybdenum halide with a tetravalent titanium halide and a mixture of a pentavalent antimony halide with a trivalent antimony halide . products of this process are useful in a variety of applications including solvents , blowing agents , and refrigerants .