EXHAUST-GAS PURIFICATION CATALYST

• Main Authors: KINOSHITA KEISUKE, SASAKI KOKICHI, TSUJI MAKOTO, OCHIAI DAISUKE, IMAI HIROTO
• Format: Patent
• Language: English; Japanese
• Published: 13.11.2014
• 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 exhaust-gas purification catalyst having excellent NOx purification performance.SOLUTION: An exhaust-gas purification catalyst includes a substrate, and a catalyst layer disposed on the substrate, the catalyst layer including a first carrier, and platinum and a first palladium carried on the first carrier, a weight ratio of the platinum and the first palladium being 3:1 to 8:1. 【課題】本発明はＮＯｘ浄化性能に優れた新たな排気ガス浄化用触媒を提供することを課題とする。【解決手段】上記課題は、基材；及び前記基材上に配置された、第１の担体と当該第１の担体上に担持された白金及び第１のパラジウムとを含む触媒層；を含み、前記白金と前記第１のパラジウムとの重量比が３：１〜８：１である、排気ガス浄化用触媒によって解決することができる。【選択図】図４