Umicore Shokubai Japan Co., Ltd.

Yasuyuki Takeda

Shigekazu Minami

In an exhaust gas purification catalyst, a catalytic component containing a first oxide, a second oxide, and a precious metal is supported on a three-dimensional structure; the ratio of the amount of precious metal supported on the first oxide to the total amount of precious metal supported on the first oxide and precious metal supported on the second oxide, or the ratio of the amount of precious metal supported on the second oxide to the total amount of precious metal supported on the first oxide and precious metal supported on the second oxide is 70% or more to 100% or less, as measured by an electron probe microanalyzer (EPMA); and the amount of carbon monoxide that the precious metal can adsorb per unit mass is 15 mL/g or more to 100 mL/g or less.

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Kobe, Japan

Yasuyuki Takeda