EXHAUST GAS PURIFYING CATALYST AND METHOD FOR PRODUCING SAME, AND EXHAUST GAS PURIFICATION DEVICE USING SAME

Title:

EXHAUST GAS PURIFYING CATALYST AND METHOD FOR PRODUCING SAME, AND EXHAUST GAS PURIFICATION DEVICE USING SAME

Document Type and Number:

WIPO Patent Application WO/2017/073527

Kind Code:

A1

Abstract:

Provided are a novel exhaust gas purifying catalyst, a method for producing same, and an exhaust gas purification device using same, which are capable of maintaining catalytic activity of a precious metal at a higher level than compared with conventional exhaust gas purifying catalysts. The present invention relates to an exhaust gas purifying catalyst (10) having a first carrier particle (1), a second carrier particle (2), and a precious metal catalyst particle (3) carried on the first and second carrier particles, wherein: the first carrier particle (1) contains a rare-earth oxide other than ceria and at least one metal oxide selected from the group consisting of silica, alumina, ceria, zirconia, and titania; the second carrier particle (2) contains a rare-earth oxide other than ceria; and the contained amount of the rare-earth oxide in the second carrier particle (2) is higher than the contained amount of the rare-earth oxide in the first carrier particle (1).

Inventors:

SAKURADA YU (JP)
MATSUEDA SATOSHI (JP)
HOSHINO SHO (JP)
NAKASHIMA RYOTA (JP)

Application Number:

PCT/JP2016/081494

Publication Date:

May 04, 2017

Filing Date:

October 24, 2016

Export Citation:

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Assignee:

CATALER CORP (JP)

International Classes:

B01D53/94; B01J23/63; B01J37/04

Foreign References:

JP2013117190A	2013-06-13
JP2006298682A	2006-11-02
JP2014509241A	2014-04-17
JP2011183317A	2011-09-22
CN103769074A	2014-05-07

Other References: