Title:
EXHAUST GAS PURIFICATION CATALYST
Document Type and Number:
WIPO Patent Application WO/2015/037613
Kind Code:
A1
Abstract:
Provided is a novel exhaust gas purification catalyst having high gas diffusion/ mixing properties in the catalyst layer, which can thereby exhibit exceptional catalytic performance. Proposed is an exhaust gas purification catalyst provided with a catalyst layer having two or more types of inorganic porous particles of different particle size, a catalytically active component, and voids, wherein the exhaust gas purification catalyst is characterized firstly in that 50% or more of the total number of voids in the catalyst layer satisfy the condition of the following (formula 1), and characterized secondly in that the average void radius in the void cross-sectional area of the catalyst layer, calculated on the assumption of a true circle, is 10 μm-2- μm. L/2/(πS)1/2≧2 … (formula 1) S: Void cross-sectional area, L: Length of void cross sectional circumference
Inventors:
IWAKURA HIRONORI (JP)
MORIYA TOSHIHARU (JP)
IMADA YASUNORI (JP)
NAKAHARA YUNOSUKE (JP)
MORIYA TOSHIHARU (JP)
IMADA YASUNORI (JP)
NAKAHARA YUNOSUKE (JP)
Application Number:
PCT/JP2014/073917
Publication Date:
March 19, 2015
Filing Date:
September 10, 2014
Export Citation:
Assignee:
MITSUI MINING & SMELTING CO (JP)
International Classes:
B01J35/10; B01D53/94; B01J23/63; B01J35/04
Foreign References:
| JP2012240027A | 2012-12-10 | |||
| JPH08332329A | 1996-12-17 | |||
| JP2005349293A | 2005-12-22 | |||
| JP2007021368A | 2007-02-01 | |||
| JP2007275704A | 2007-10-25 | |||
| JP2012206057A | 2012-10-25 | |||
| JP2002191988A | 2002-07-10 | |||
| JP2002253968A | 2002-09-10 | |||
| JP2004025013A | 2004-01-29 | |||
| JP2006110485A | 2006-04-27 | |||
| JP2012240027A | 2012-12-10 |
Other References:
"Redrawing the Map on Redistricting: A National Study", 2010 - 1 December 2014 (2014-12-01), XP055329302, Retrieved from the Internet
See also references of EP 3045227A4
See also references of EP 3045227A4
Attorney, Agent or Firm:
TAKEUCHI, ICHIZAWA & ASSOCIATES (JP)
Patent business corporation Takeuchi and an Ichizawa international patent firm (JP)
Patent business corporation Takeuchi and an Ichizawa international patent firm (JP)
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