| 简介 |
PROBLEM TO BE SOLVED : To produce an exhaust gas cleaning catalyst developing a sufficient capacity even during a low-temperature (400°C or below) operation when starting of a car or at the time of idling by enhancing the activity of a noble metal itself and preventing the decrease in the activity of the noble metal at a high temperature.
SOLUTION : In this exhaust gas cleaning catalyst, Pd is supported on a rare earth Al oxide and at least one alkaline earth metal is added to the rare earth Al oxide. |
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