Search International and National Patent Collections

1. (WO2018199249) EXHAUST GAS PURIFICATION CATALYST AND EXHAUST GAS PURIFICATION METHOD USING SAME

Pub. No.:    WO/2018/199249    International Application No.:    PCT/JP2018/017024
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
NAKASHIMA, Masashi
中島 優
IKEGAMI, Takahiro
池上 高広
MIKITA, Kosuke
三木田 光脩
IKEDA, Masanori
池田 正憲
MINAMI, Shigekazu
南 茂和
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 and yttrium 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 yttrium included in the first region (3) and/or the second region (4) is higher than the concentration of yttrium included in the region (2).