Title:
EXHAUST GAS PURIFICATION CATALYST
Document Type and Number:
WIPO Patent Application WO/2019/221292
Kind Code:
A1
Abstract:
Provided is an exhaust gas purification catalyst in which pressure loss does not readily increase, even if a large amount of a zeolite-based SCR is used to improve NOx purification capacity. An exhaust gas purification catalyst has a DPF filled with a zeolite having a primary particle size of 0.5 μm or less. Further, it is more preferable for the 50% particle diameter of the zeolite measured by a dynamic light scattering method to be 2.0 μm or less, and for the 90% particle diameter to be 2.5 μm or less.
Inventors:
MORI TAKAYUKI (JP)
Application Number:
PCT/JP2019/019780
Publication Date:
November 21, 2019
Filing Date:
May 17, 2019
Export Citation:
Assignee:
TOKYO ROKI KK (JP)
International Classes:
B01J29/70; B01D53/94; B01J37/02; F01N3/035; F01N3/08; F01N3/28
Domestic Patent References:
| WO2017100384A1 | 2017-06-15 | |||
| WO2017163984A1 | 2017-09-28 | |||
| WO2017134007A1 | 2017-08-10 |
Foreign References:
| JP2017519627A | 2017-07-20 | |||
| JP2010501326A | 2010-01-21 | |||
| JP2015112559A | 2015-06-22 | |||
| JP2005152774A | 2005-06-16 | |||
| JP2014198654A | 2014-10-23 | |||
| JP2012052546A | 2012-03-15 |
Other References:
See also references of EP 3795245A4
Attorney, Agent or Firm:
ISSHIKI & CO. (JP)
Download PDF: