CATALYST FOR CLEANING EXHAUST GAS

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PROBLEM TO BE SOLVED : To provide a catalyst for cleaning an exhaust gas which suppresses poisoning by sulfur and suppresses sintering of a catalytic noble metal. SOLUTION : In the catalyst for cleaning the exhaust gas prepared by carrying a NOx occlusion agent selected from a group comprising a alkaline earth metal and a rare earth element, and an noble metal for a catalyst on a carrier comprising titania-zirconia-alumina powders, the carrier comprising the titania-zirconia-alumina powders is porous and the volume of pores with a diameter of 20 nm or less is 104 cc/g or more. COPYRIGHT : (C)2006, JPO&NCIPI