EXHAUST GAS PURIFICATION CATALYST AND EXHAUST GAS PURIFICATION METHOD USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an exhaust gas purification catalyst capable of achieving both of improved heat resistance by coating rhodium with alumina and suppression of the solid solution of the rhodium into the alumina, and to provide a method for efficiently purifying the exhaust gas of an internal combustion engine using the catalyst.

SOLUTION: The exhaust gas purification catalyst contains at least the rhodium coated with the alumina containing lanthanum.

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