Controlled Pore Size Distribution Porous Ceramic Honeycomb Filter, Honeycomb Green Body, Batch Mixture And Manufacturing Method Therefor

摘要

A porous ceramic honeycomb filter manufactured from an oxide-based ceramic material having a pore size distribution with d₁≧7.0 microns. Preferably, the oxide-based material is cordierite or aluminum titanate. Alternatively, the filter contains a cordierite-containing ceramic body with a narrow pore size distribution with d_b≦1.00, wherein d_b=(d₉₀−d₁₀)/d₅₀. Also disclosed is a batch mixture, method and honeycomb green body made from mixture of inorganic source materials selected from the group of magnesia sources, alumina sources, and silica sources, and a pore former having a narrow particle size distribution with d_ps≦0.90, wherein d_ps={(dp₉₀−dp₁₀)/dp₅₀}. The pore former is preferably selected from a group consisting of canna starch, sago palm starch, green mung bean starch, and single-mode potato starch.