CERAMIC HONEYCOMB STRUCTURE AND PRODUCTION METHOD THEREFOR

Title:

CERAMIC HONEYCOMB STRUCTURE AND PRODUCTION METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2015/046012

Kind Code:

A1

Abstract:

A ceramic honeycomb structure characterized by having a plurality of flow paths partitioned by a porous partition and said partition having (a) a porosity of 55%-65% and (b) a pore distribution, measured by mercury porosimetry, whereby: (i) the pore diameter of 2% cumulative pore volume of the total pore volume is 100-180 µm, the pore diameter (d5) of 5% is 55-150 µm, the pore diameter (d10) of 10% is at least 20 µm and less than 50 µm, the pore diameter (d50) of 50% is 12-23 µm, the pore diameter of 85% is at least 6 µm and less than 10 µm, the pore diameter (d90) of 90% is 4-8 µm, the pore diameter (d98) of 98% is no more than 3.5 µm, (d10 - d90)/d50 is 1.3-2, (d50 - d90)/d50 is 0.45-0.7, and (d10 - d50)/d50 is 0.75-1.4; (ii) the difference between the logarithm of the pore diameter for 20% cumulative pore volume of the total pore volume and the logarithm of the pore diameter for 80% being no more than 0.39; and (iii) the volume of pores exceeding 100 µm being no more than 0.05 cm3/g.

Inventors:

OKAZAKI SHUNJI (JP)

Application Number:

PCT/JP2014/074683

Publication Date:

April 02, 2015

Filing Date:

September 18, 2014

Export Citation:

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Assignee:

HITACHI METALS LTD (JP)

International Classes:

B01D39/20; C04B38/00; B01D46/00; B28B3/20; C04B38/06; F01N3/022

Domestic Patent References:

WO2009063997A1	2009-05-22
WO2011027837A1	2011-03-10
WO2011102487A1	2011-08-25
WO2011027837A1	2011-03-10
WO2007108428A1	2007-09-27

Foreign References:

JP2005530616A	2005-10-13
JP2002219319A	2002-08-06
JP2003040687A	2003-02-13
JP2004360654A	2004-12-24
JP2009517327A	2009-04-30
JP2011516371A	2011-05-26
US5141686A	1992-08-25

Other References: