Mitsui Minings & Melting Co., Ltd.

Honda Motor Co., Ltd.

Yosuke Shibata

Yunosuke Nakahara

Kiyotaka Yasuda

Takashi Wakabayashi

Hiroyuki Horimura

Toshiaki Kimura

Motoki Ito

Akiko Koga

Masateru Tsuji

Provided is a novel palladium catalyst capable of efficiently purifying carbon monoxide (CO) and total hydrocarbons (THC) under a fuel-rich atmosphere even when palladium (Pd) is used as a catalyst active component. Proposed is a palladium monolayer catalyst for an exhaust gas from a saddle-riding-type vehicle, which is an exhaust gas purification catalyst for a saddle-riding-type vehicle to be installed in an exhaust gas passage in an internal combustion engine. The palladium monolayer catalyst includes a substrate, and a catalyst layer that has the form of a monolayer and contains palladium acting as a catalyst active component, an inorganic porous body acting as a catalyst carrier, ceria (CeO) particles acting as a promoter component, and barium.

Exhaust gas purification palladium monolayer catalyst for saddle-riding-type vehicle

Provided is a palladium catalyst in which palladium (Pd) is used as a catalyst active component, and particularly a novel palladium catalyst which can purify CO and THC with high efficiency even under a fuel-rich atmosphere having a high space velocity (SV). Proposed is a palladium catalyst having a substrate and a catalyst layer that contains palladium acting as a catalyst active component, an inorganic porous material acting as a catalyst support and ceria (CeO) particles acting as a promoter component, in which a mass ratio (Pd/CeO) of a content of the palladium in the catalyst layer to a content of the ceria particles in the catalyst layer is 0.0014 to 0.6000.

Palladium catalyst

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Ageo, Japan

Yosuke Shibata