EXHAUST GAS-PURIFYING PALLADIUM SINGLE LAYER CATALYST FOR SADDLE-RIDING TYPE VEHICLE

• Main Authors: TSUJI MASAMITSU, NAKAHARA YUNOSUKE, SHIBATA YOSUKE, KOGA AKIKO, KIMURA SATOAKI, ITO GENKI, YASUDA KIYOTAKA, WAKABAYASHI HOMARE, HORIMURA HIROYUKI
• Format: Patent
• Language: English
• Published: 10.10.2013
• Subjects: BLASTING; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; STEAM ENGINES; THEIR RELEVANT APPARATUS; TRANSPORTING; WEAPONS

PROBLEM TO BE SOLVED: To provide a new palladium catalyst capable of efficiently removing carbon monoxide (CO) and hydrocarbons (THC) in a fuel-rich atmosphere for purification, even when using palladium (Pd) as a catalytically active ingredient.SOLUTION: There is provided a palladium single layer catalyst for purifying the exhaust gas of saddle-riding type vehicles, provided in the exhaust gas channel of an internal combustion engine. The catalyst comprises a substrate, and a catalyst layer as a single layer containing palladium as a catalytically active ingredient, an inorganic porous body as a catalyst carrier, ceria (CeO) particles as a cocatalyst ingredient and barium.