排ガス浄化用触媒 - TOYOTA JIDOSHA KABUSHIKI KAISHA

Title:

排ガス浄化用触媒

Document Type and Number:

Japanese Patent JP6863799

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide an exhaust gas purification catalyst using an OCS material which achieves both oxygen storage capacity and oxygen absorbing and releasing rate while having sufficient heat resistance.SOLUTION: There is provided an exhaust gas purification catalyst which has a substrate and a catalyst coating layer formed on the substrate and contains 5 to 100 g/L of a ceria-zirconia-based composite oxide having a pyrochlore structure based on the substrate volume in the catalyst coating layer, wherein the ceria-zirconia-based composite oxide has a secondary particle diameter (D50) of 3 to 7 μm and may contain praseodymium.SELECTED DRAWING: Figure 1

More Like This:

JP2009518173	A catalyst composed of a solid carrier, an oxide, and a metal active phase grafted on the oxide, a method for producing the same, and its use.
JP3659028	EXHAUST GAS CLEANING APPARATUS AND METHOD OF USING THE SAME
JP3442382	INDUSTRIAL APPLICABILITY: A carrier material for a platinum group metal-containing three-way catalyst for purifying exhaust gas of an internal combustion engine.

Inventors:

Yoshinori Saito
Miura Masahide
Seiji Nakato
Hiromasa Suzuki
Takahiro Suzuki
Kosuke Iizuka
Minoru Ito
Ryota Nakajima

Application Number:

JP2017072467A

Publication Date:

April 21, 2021

Filing Date:

March 31, 2017

Export Citation:

Click for automatic bibliography generation Help

Assignee:

TOYOTA JIDOSHA KABUSHIKI KAISHA
Cataler Co., Ltd.

International Classes:

B01J23/63; B01D53/94; F01N3/10; F01N3/28

Domestic Patent References:

JP2012086199A
JP2016112489A
JP2010260046A
JP2012110859A
JP2015071520A
JP2015182932A

Foreign References:

WO2014076999A1
WO2010064497A1

Attorney, Agent or Firm:

Yusuke Hiraki
Satoshi Fujita
Naomi Shimamura
Hiramatsu Chiharu

Previous Patent: 伸縮管継手及び焼却灰処理設備

Next Patent: 環状オレフィン系樹脂組成物、成形体および光学部品