POROUS CERAMIC HONEYCOMB ARTICLES AND METHODS FOR MAKING THE SAME

摘要

A porous ceramic honeycomb article comprising a honeycomb body formed from cordierite ceramic, wherein the honeycomb body has a porosity P% = 55% and a cell channel density CD = 150 cpsi. The porous channel walls have a wall thickness T, wherein (11+(300-CD)*0.03) = T =(8+(300-CD)*0.02), a median pore size = 20 microns, and a pore size distribution with a d-factor of = 0.35. The honeycomb body has a specific pore volume of VP = 0.22. The porous ceramic honeycomb article exhibits a coated pressure drop increase of = 8 kPa 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.