分享好友 知识库首页 频道列表

The exhaust gas purifying catalyst and method of manufacturing the same

2025-06-19 23:542610下载
文件类型:PDF文档
文件大小:54K
An exhaust gas purifying catalyst for an internal combustion engine of an automotive vehicle. The exhaust gas purifying catalyst comprises a monolithic substrate. A first catalytic layer is formed on the monolithic substrate. The first catalytic layer contains at least one noble metal selected from the group consisting of rhodium, platinum and palladium, compound of at least one metal selected from the group consisting of alkali metal, alkaline earth metal and rare earth metal, and alumina. Additionally, a second catalytic layer is formed on the first catalytic layer and contains rhodium, at least one noble metal selected from the group consisting platinum and palladium, compound of at least one metal selected from the group consisting of alkali metal, alkaline earth metal and rare earth metal, and alumina. A content of the compound of the at least one metal in the second catalytic layer is larger than that in the first catalytic layer.


请登录查看


反对 0
举报 0
收藏 0
打赏 0
评论 0