A series of Pd-incorporated titanate catalysts (Pd/KSTO) were synthesized by the intercalation of Pd (NO 3) 2 into layered potassium titanate (KTO), which proceeded via a cation-exchange reaction in molten salts. Perovskite phases of Pd/KSTO for catalysis were synthesized at 600° C and above, whereas a lepidocrocite-type layered titanate structure, similar to that of the parent KTO, was retained when a lower temperature of 400° C was ...