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1. (WO2017204008) EXHAUST GAS PURIFYING CATALYST

Pub. No.:    WO/2017/204008    International Application No.:    PCT/JP2017/018077
Publication Date: Fri Dec 01 00:59:59 CET 2017 International Filing Date: Sat May 13 01:59:59 CEST 2017
IPC: B01J 35/04
B01D 53/94
B01J 23/63
F01N 3/10
F01N 3/28
Applicants: CATALER CORPORATION
株式会社キャタラー
Inventors: TAKESUE, Yuki
武居 佑起
MURAKAMI, Kyosuke
村上 恭介
ONOE, Ryota
尾上 亮太
Title: EXHAUST GAS PURIFYING CATALYST
Abstract:
This exhaust gas purifying catalyst is provided with a base 10 and a catalyst coat layer 30. The catalyst coat layer is provided, as noble metal catalysts, with Rh and Pd. Rh is arranged on an upper layer A in a first stage and an upper layer C in a second stage. Pd is arranged on the upper layer A in the first stage, a lower layer B in the first stage and a lower layer D in the second stage. The mass ratio of the Pd arranged on the upper layer A in the first stage to the Rh arranged on the upper layer A in the first stage, namely (APd/ARh) satisfies 0.5 ≤ (APd/ARh) ≤ 3.