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1. (WO2018199250) EXHAUST GAS PURIFICATION CATALYST AND EXHAUST GAS PURIFICATION METHOD USING SAME

Pub. No.:    WO/2018/199250    International Application No.:    PCT/JP2018/017025
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Fri Apr 27 01:59:59 CEST 2018
IPC: B01J 23/63
B01D 53/94
B01J 35/04
F01N 3/10
F01N 3/28
Applicants: UMICORE SHOKUBAI JAPAN CO., LTD.
ユミコア日本触媒株式会社
Inventors: KUNO, Hirotaka
久野 弘尊
IKEGAMI, Takahiro
池上 高広
MIKITA, Kosuke
三木田 光脩
NAKASHIMA, Masashi
中島 優
MINAMI, Shigekazu
南 茂和
IKEDA, Masanori
池田 正憲
Title: EXHAUST GAS PURIFICATION CATALYST AND EXHAUST GAS PURIFICATION METHOD USING SAME
Abstract:
In order to provide an exhaust gas purification catalyst that can purify hydrocarbons, carbon monoxide, and nitrogen oxides within exhaust gas at a low temperature, in an exhaust gas purification catalyst according to the present invention, a region (2) including palladium is provided on a three-dimensional structure (1), a first region (3) and a second region (4) are provided on this region (2) in order from a side where exhaust gas flows in toward a side where the exhaust gas flows out, and the concentration of rhodium included in the first region (3) is higher than the concentration of rhodium included in the second region (4).