Honda Motor Co., Ltd.

Mitsui Minings & Melting Co., Ltd.

Akiko Koga

Hiroyuki Horimura

Yunosuke Nakahara

Kiyotaka Yasuda

Takashi Wakabayashi

Toshiaki Kimura

Motoki Ito

Yosuke Shibata

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

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Wako, Japan

Akiko Koga