Title:
EXHAUST GAS PURIFICATION CATALYST
Document Type and Number:
WIPO Patent Application WO/2016/158646
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing an exhaust gas purification catalyst capable of showing sufficient purification performance even under a high Ga condition. The present invention relates to an exhaust gas purification catalyst having a base material and a catalyst coating layer formed on the base material, the catalyst coating layer containing catalyst particles having different compositions in an exhaust gas-upstream region occupying a range from the end of the catalyst on the exhaust gas-upstream side to 40-60 % of the entire length of the base material, and in downstream-side region, which is the remaining region of the catalyst coating layer, wherein the exhaust gas-upstream side region includes many voids and a certain portion or more of all the voids are composed of pores having a high aspect ratio of 5 or greater, thereby improving the purification performance of the catalyst.
Inventors:
SUZUKI HIROMASA (JP)
MIURA MASAHIDE (JP)
SAITO YOSHINORI (JP)
KATOH SATORU (JP)
TANABE TOSHITAKA (JP)
HIRAO TETSUHIRO (JP)
OHASHI TATSUYA (JP)
NAITO HIROAKI (JP)
ORI HIROTAKA (JP)
TAKEUCHI MICHIHIKO (JP)
NARITA KEIICHI (JP)
MIURA MASAHIDE (JP)
SAITO YOSHINORI (JP)
KATOH SATORU (JP)
TANABE TOSHITAKA (JP)
HIRAO TETSUHIRO (JP)
OHASHI TATSUYA (JP)
NAITO HIROAKI (JP)
ORI HIROTAKA (JP)
TAKEUCHI MICHIHIKO (JP)
NARITA KEIICHI (JP)
Application Number:
PCT/JP2016/059319
Publication Date:
October 06, 2016
Filing Date:
March 24, 2016
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
CATALER CORP (JP)
SUZUKI HIROMASA (JP)
MIURA MASAHIDE (JP)
SAITO YOSHINORI (JP)
KATOH SATORU (JP)
TANABE TOSHITAKA (JP)
HIRAO TETSUHIRO (JP)
OHASHI TATSUYA (JP)
NAITO HIROAKI (JP)
ORI HIROTAKA (JP)
TAKEUCHI MICHIHIKO (JP)
NARITA KEIICHI (JP)
CATALER CORP (JP)
SUZUKI HIROMASA (JP)
MIURA MASAHIDE (JP)
SAITO YOSHINORI (JP)
KATOH SATORU (JP)
TANABE TOSHITAKA (JP)
HIRAO TETSUHIRO (JP)
OHASHI TATSUYA (JP)
NAITO HIROAKI (JP)
ORI HIROTAKA (JP)
TAKEUCHI MICHIHIKO (JP)
NARITA KEIICHI (JP)
International Classes:
B01J35/04; B01D53/94; B01J23/63; B01J35/10; B01J37/08
Domestic Patent References:
| WO2015037613A1 | 2015-03-19 |
Foreign References:
| JP2013180235A | 2013-09-12 | |||
| JP2012240027A | 2012-12-10 | |||
| JP2006314894A | 2006-11-24 | |||
| JP2005296935A | 2005-10-27 | |||
| JP2000246103A | 2000-09-12 | |||
| JP2010528835A | 2010-08-26 | |||
| JP2002079087A | 2002-03-19 |
Other References:
See also references of EP 3275542A4
Attorney, Agent or Firm:
HIRAKI Yusuke et al. (JP)
Yusuke Hiraki (JP)
Yusuke Hiraki (JP)
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