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公开(公告)号:US10753248B2
公开(公告)日:2020-08-25
申请号:US16140653
申请日:2018-09-25
发明人: Tomotaka Hirota , Yasunori Kurashima , Shuhei Nagaoka , Yukie Ohtsuka , Satoshi Sumiya , Takayuki Suzuki , Takashi Yamada
IPC分类号: B01J23/00 , B01J23/10 , F01N3/10 , F01N3/28 , B01J21/04 , B01J21/10 , B01J23/46 , B01J35/00 , B01D53/86 , B01J23/63 , B01D53/94
摘要: A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprises: a substrate; and a catalytic region on the substrate; wherein the catalytic region comprises a platinum group metal (PGM) component, an oxide, and a rare earth metal component; wherein the oxide is an inorganic oxide, an oxygen storage component (OSC) material, or a mixture thereof; wherein the rare earth metal component concentration by element on the surface of the oxide per unit specific surface area of the oxide is 1 μmol/m2 to 20 μmol/m2.