Purification Catalyst for Exhaust Gas, Production Method Therefor, and Purification Catalyst Equip

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A purification catalyst for exhaust gas which exhibits satisfactory performance even at a low temperature operation of starting or idling of engine (not more than 400° C.), and a production method therefor are provided. The catalyst comprises an aluminum oxide supporting Pd, and the aluminum oxide is LnAlO3 (Ln : rare-earth metal).