- 专利标题: EXHAUST GAS PURIFICATION CATALYST
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申请号: EP21162278.2申请日: 2021-03-12
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公开(公告)号: EP3885030A1公开(公告)日: 2021-09-29
- 发明人: CHINZEI, Isao , NISHIO, Takahiro , SHIRAKAWA, Shogo , MIURA, Masahide , SUZUKI, Hiromasa , KIDO, Yuki , ITO, Minoru , HOSHINO, Sho , NAKAYAMA, Shin
- 申请人: TOYOTA JIDOSHA KABUSHIKI KAISHA , CATALER CORPORATION
- 申请人地址: JP TOYOTA-SHI, AICHI-KEN 471-8571 1, Toyota-cho; JP Kakegawa-shi, Shizuoka 437-1492 7800, Chihama
- 代理机构: J A Kemp LLP
- 优先权: JP2020054639 20200325
- 主分类号: B01D53/94
- IPC分类号: B01D53/94
摘要:
Provided is an exhaust gas purification catalyst capable of reducing a noble metal amount while maintaining a catalyst performance, which comprises a substrate and at least three catalyst coating layers formed on the substrate, the first and third catalyst coating layers contain Pd as a catalyst metal and are formed in a range of a predetermined length from an upstream end surface in an exhaust gas flow direction, and the second catalyst coating layer contains Rh as a catalyst metal and is formed in a range of a predetermined length from a downstream end surface in the exhaust gas flow direction.
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