METHOD FOR PRODUCING CATALYST FOR EXHAUST GAS PURIFICATION

• Main Authors: ISHIKAWA HIROYUKI, TOJO TAKUMI, OKI DAISUKE, OYAMA JUNYA, KONO YUYA, AONO NORIHIKO, SATSUMA ATSUSHI
• Format: Patent
• Language: English; Japanese
• Published: 11.04.2016
• 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 method for producing a catalyst for exhaust gas purification having excellent methane combustion activity in a low temperature range.SOLUTION: A method for producing a catalyst for exhaust gas purification comprises a step of substituting a part of metallic cobalt carried on a carrier by palladium by galvanic substitution, namely, a step of substitution reaction using a difference in ionization tendency between two metals, cobalt and palladium.SELECTED DRAWING: None 【課題】低温域におけるメタン燃焼活性に優れた排ガス浄化用触媒の製造方法を提供。【解決手段】排ガス浄化用触媒の製造方法は、担体に担持された金属コバルトの一部をガルバニック置換によりパラジウムで置換する工程を含む、すなわちコバルトとパラジウムの２種の金属のイオン化傾向の差を利用した置換反応の工程を含む触媒の製造方法。【選択図】なし