Toyota Jidosha Kabushiki Kaisha

Cataler Corporation

Kana Iwata

Hiromasa Suzuki

Takeru Yoshida

Masaru Kakinohana

Takumi Tojo

Atsushi Tanaka

Minoru Ito

Minoru Itou

Shunsuke Ohishi

Satoshi Kamitani

An exhaust gas purification catalyst apparatus has a honeycomb base material and a catalyst noble metal supported by the honeycomb base material, wherein: the honeycomb base material contains ceria-zirconia composite oxide particles as one of the constituent materials, is of a wall flow type, and includes inlet-side cells and outlet-side cells demarcated by porous partition walls; the catalyst noble metal is supported in inlet-side support regions and outlet-side support regions; each of the inlet-side support regions is formed with a specific length from the exhaust gas flow upstream end; the catalyst noble metal 70% support depth is not greater than 50% of the thickness of the porous partition walls; each of the outlet-side support regions is formed with a specific length from the exhaust gas flow downstream end; and the catalyst noble metal 70% support depth is greater than 50% of the thickness of the porous partition walls.

Exhaust gas purification catalyst apparatus

An exhaust gas purification catalytic device includes: a substrate; at least one type of noble-metal catalyst that is supported on the substrate; and a coating layer on the surface of the substrate. The substrate includes a plurality of cells which are demarcated by porous walls. The substrate and the coating layer each include ceria-zirconia composite oxide particles.

Exhaust gas purification catalytic device

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Kakegawa, Japan

Kana Iwata