EXHAUST GAS CLEANING CATALYST, ITS PRODUCTION METHOD AND EXHAUST GAS CLEANING CATALYST APPARATUS FO

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PROBLEM TO BE SOLVED : To provide an exhaust gas cleaning catalyst exhibiting sufficient performance during operation by enhancing activity of a noble metal itself and preventing reduction of the activity at high temperature. SOLUTION : A perovskite type Al composite oxide is carried with Pd, the Al composite oxide is LnAl1-XMXO3 (Ln : rare earth element), and the element M in the LnAl1-XMXO3 is one kind of elements of group 1-5 and elements of group 12-14.