Patent ID: 8591623

Claim:
A method of manufacturing a honeycomb body, comprising the steps of: mixing inorganic source materials, a pore former, and forming aids to form a plasticized batch, wherein the pore former includes nut shells having a particle size distribution with 30 μm≦d p50 ≦50 μm wherein d p50 is a median particle size diameter wherein 50% of the particle volume has a smaller particle diameter, wherein the nut shells exhibit a particle size distribution with d p10 ≧10 μm wherein d p10 is a particle diameter where 10% of the particle volume has a smaller particle diameter, and wherein the nut shells exhibit a value of d pf ≦0.54 wherein d pf =d p50 −d p10 /d p50 , and forming the plasticized batch into the honeycomb body having a plurality of channels formed by intersecting walls.