US 11,719,142 B2
Porous ceramic material, filter, and articles
Roychelle Sheneen Ingram-Ogunwumi, Painted Post, NY (US); Christopher Lane Kerr, Tioga, PA (US); Dell Joseph St Julien, Watkins Glen, NY (US); Lutz Franz Thomas Kercher, Corning, NY (US); and Douglas Richard Wing, Corning, NY (US)
Assigned to Corning Incorporated, Corning, NY (US)
Appl. No. 16/60,672
Filed by Corning Incorporated, Corning, NY (US)
PCT Filed Dec. 7, 2016, PCT No. PCT/US2016/065416
§ 371(c)(1), (2) Date Jun. 8, 2018,
PCT Pub. No. WO2017/100340, PCT Pub. Date Jun. 15, 2017.
Claims priority of provisional application 62/265,219, filed on Dec. 9, 2015.
Prior Publication US 2018/0363523 A1, Dec. 20, 2018
Int. Cl. F01N 3/022 (2006.01); B01D 46/24 (2006.01); C04B 38/00 (2006.01); C04B 111/00 (2006.01)
CPC F01N 3/0222 (2013.01) [B01D 46/2429 (2013.01); B01D 46/2474 (2013.01); B01D 46/2482 (2021.08); B01D 46/24491 (2021.08); B01D 46/24492 (2021.08); B01D 46/24494 (2021.08); C04B 38/0006 (2013.01); C04B 2111/00793 (2013.01); F01N 2330/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A particulate filter comprising a honeycomb structure comprised of a matrix of walls comprised of at least one porous ceramic wall, wherein the porous ceramic wall is comprised primarily of cordierite,
wherein the porous ceramic wall comprises a microstructure comprising:
average bulk porosity >60% as measured by mercury porosimetry,
14.7 μm<d50<16.0 μm,
d10>9.0 μm,
df=(d50−d10)/d50<0.45,
d90<37 μm; and
a minimum porosity as measured by x-ray tomography at any point from a surface of the porous ceramic wall perpendicularly into the porous ceramic wall to within 15 μm of the surface of the porous ceramic wall is at least 90% of an average porosity of the middle 30% of the porous ceramic wall.