Patent ID: 8609032

Claim:
A porous ceramic honeycomb article comprising a honeycomb body formed from cordierite ceramic and comprising a plurality of cell channels formed by porous channel walls, wherein: the honeycomb body has a porosity P %≧55%; the honeycomb body has a cell channel density CD ≧150 cpsi; the porous channel walls of the honeycomb body have a wall thickness T, wherein (11+(300−CD)*0.03)≧T≧(8+(300−CD)*0.02), wherein the wall thickness T is in units of mils; the porous channel walls of the honeycomb body have a median pore size ≦20microns; the porous channel walls of the honeycomb body have a pore size distribution with a d-factor of ≦0.35, wherein the d-factor =(d 50 −d 10 )/d 50 ; the honeycomb body has a specific pore volume per volume of the honeycomb body of VP ≦0.22, wherein VP =(1−OFA)*(P %/100), wherein OFA is an open frontal area of the honeycomb body; and the porous ceramic honeycomb article has a coated pressure drop increase of ≦8kPa at a flow rate of 26.5 cubic feet per minute when coated with 100 g/L of a washcoat catalyst and loaded with 5 g/L of soot.