- 专利标题: Exhaust gas purification catalyst
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申请号: US17211112申请日: 2021-03-24
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公开(公告)号: US11795855B2公开(公告)日: 2023-10-24
- 发明人: Isao Chinzei , Takahiro Nishio , Shogo Shirakawa , Masahide Miura , Hiromasa Suzuki , Yuki Kido , Minoru Ito , Sho Hoshino , Shin Nakayama
- 申请人: Isao Chinzei , Takahiro Nishio , Shogo Shirakawa , Masahide Miura , Hiromasa Suzuki , Yuki Kido , Minoru Ito , Sho Hoshino , Shin Nakayama
- 申请人地址: JP Toyota
- 专利权人: TOYOTA JIDOSHA KABUSHIKI KAISHA,CATALER CORPORATION
- 当前专利权人: TOYOTA JIDOSHA KABUSHIKI KAISHA,CATALER CORPORATION
- 当前专利权人地址: JP Toyota; JP Kakegawa
- 代理机构: Oliff PLC
- 优先权: JP 2020054639 2020.03.25
- 主分类号: F01N3/28
- IPC分类号: F01N3/28 ; B01J23/44 ; B01J23/46 ; B01J21/14 ; B01J35/00 ; B01J35/02
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.
公开/授权文献
- US20210301706A1 EXHAUST GAS PURIFICATION CATALYST 公开/授权日:2021-09-30
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