US 11,731,912 B2
Porous ceramic structure
Yunie Izumi, Nisshin (JP); Kennichi Hidaka, Nagoya (JP); and Akihiro Miura, Nagoya (JP)
Assigned to NGK INSULATORS, LTD., Nagoya (JP)
Filed by NGK INSULATORS, LTD., Nagoya (JP)
Filed on Aug. 2, 2021, as Appl. No. 17/444,197.
Claims priority of application No. 2020-148171 (JP), filed on Sep. 3, 2020.
Prior Publication US 2022/0064075 A1, Mar. 3, 2022
Int. Cl. C04B 38/00 (2006.01); C04B 35/195 (2006.01); F01N 3/28 (2006.01)
CPC C04B 38/0009 (2013.01) [C04B 35/195 (2013.01); C04B 2235/3229 (2013.01); C04B 2235/3244 (2013.01); C04B 2235/3481 (2013.01); F01N 3/2828 (2013.01); F01N 2330/30 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A porous ceramic structure comprising:
a porous structure body composed of higher than or equal to 75% by mass cordierite; and
Ce- and Zr-containing particles containing Ce and Zr and fixedly attached to the structure body,
wherein the Ce- and Zr-containing particles have:
a fixedly attached portion located inside the structure body;
a protrusion contiguous with the fixedly attached portion and protruding from the structure body; and
an open porosity of the porous structure body is higher than or equal to 25%.