分享好友 知识库首页 频道列表

Catalyst for clarifying exhaust gas

2025-06-18 04:564710下载
文件类型：PDF文档
文件大小：5423K
To provide an exhaust gas purifying catalyst which can maintain the catalytic activity at a high level over a long time and can achieve satisfactory emission control performance, an exhaust gas purifying catalyst is prepared so as to contain a noble metal, a perovskite-type composite oxide represented by the following general formula (3), and theta-alumina and/or alpha-alumina : [in-line-formulae]AB1-mNmO3  (3)[/in-line-formulae]wherein A represents at least one element selected from rare-earth elements and alkaline earth metals; B represents at least one element selected from Al and transition elements excluding rare-earth elements and noble metals; N represents a noble metal; and m represents an atomic ratio of N satisfying the following relation : 0
反对 0
举报 0
收藏 0
打赏 0
评论 0