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Disclosed are ceramic honeycomb articles, which are composed predominately of a crystalline phase cordierite composition. The ceramic honeycomb articles possess a microstructure characterized by a unique combination of relatively high porosity between 42% and 56%, and relatively narrow pore size dis

Disclosed are ceramic honeycomb articles, which are composed predominately of a crystalline phase cordierite composition. The ceramic honeycomb articles possess a microstructure characterized by a unique combination of relatively high porosity between 42% and 56%, and relatively narrow pore size distribution wherein less than 15% of the total porosity has a pore diameter less than 10 μm, less than 20% of the total porosity has a pore diameter greater than 30 μm, and dbreadth≦1.50 wherein dbreadth=(d90-d10)/d50. The articles exhibits high thermal durability and high filtration efficiency coupled with low pressure drop across the filter. Such ceramic articles are particularly well suited for filtration applications, such as diesel exhaust filters or DPFs. Also disclosed is a method for manufacturing the ceramic article wherein the pore former is preferably potato starch having a median particle diameter greater than 40 μm.

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What is claimed is: 1. A ceramic honeycomb article, comprising: a porous ceramic containing cordierite having a total porosity (% P) wherein 42%breadth≦1.50 wherein dbreadth=(d90-d10)/d50. 2. The ceramic honeycomb article of claim 1, further comprising % P50) wherein 13 μm≦d50&

What is claimed is: 1. A ceramic honeycomb article, comprising: a porous ceramic containing cordierite having a total porosity (% P) wherein 42%breadth≦1.50 wherein dbreadth=(d90-d10)/d50. 2. The ceramic honeycomb article of claim 1, further comprising % P50) wherein 13 μm≦d50≦22 μm. 11. The ceramic honeycomb article of claim 10 wherein 14 μm≦d50 ≦21 μm. 12. The ceramic honeycomb article of claim 1, further comprising a coefficient of thermal expansion (CTE) wherein CTE≦8.0��10-7/�� C. across the temperature range of from 25�� C. to 800�� C. 13. The ceramic honeycomb article of claim 12 wherein CTE≦6.0��10-7/�� C. (25�� C. to 800�� C.). 14. The ceramic honeycomb article of claim 12 wherein CTE≦5.0��10-7/�� C. (25�� C. to 800�� C.). 15. The ceramic honeycomb article of claim 12 wherein CTE≦4.0��10-7/�� C. (25�� C. to 800�� C.). 16. The ceramic honeycomb article of claim 12 wherein CTE≦3.0��10-7/�� C. (25�� C. to 800�� C.). 17. The ceramic honeycomb article of claim 1 wherein the pore size distribution further comprises a dfactor≦0.45, wherein dfactor=(d50-d10)/d50. 18. The ceramic honeycomb article of claim 17 wherein the dfactor≦0.40. 19. The ceramic honeycomb article of claim 17 wherein the dfactor≦0.35. 20. The ceramic honeycomb article of claim 17 wherein the dfactor≦0.33. 21. The ceramic honeycomb article of claim 1 wherein the pore size distribution further comprises a dbreadth≦1.35, wherein dbreadth=(d90-d10)/d50. 22. The ceramic honeycomb article of claim 21 wherein the dbreadth≦1.20. 23. The ceramic honeycomb article of claim 21 wherein the dbreadth≦1.10. 24. The ceramic honeycomb article of claim 1, further comprising: 44%50≦21 μm, CTE≦6.0��10-7/�� C. (25�� C. to 800�� C.), and dfactor≦0.45, wherein dfactor=(d50-d10)/d50. 25. The ceramic honeycomb article of claim 1, further comprising: 42%50≦22 μm, CTE≦6.0��10-7/�� C. (25�� C. to 800�� C.), and dbreadth≦1.35. 26. The ceramic honeycomb article of claim 1, further comprising: dfactor≦0.45, wherein dfactor=(d50-d10)/d50, and dbreadth≦1.35. 27. A method of manufacturing a ceramic honeycomb article, comprising the steps of: providing a plasticized cordierite precursor batch composition containing: inorganic batch components selected from a magnesium oxide source; an alumina-forming source; and a silica-forming source; a pore former having a median particle diameter greater than 40 μm; a liquid vehicle; and a binder; forming a honeycomb green body from the plasticized cordierite precursor batch composition; and firing the honeycomb green body under conditions effective to convert the honeycomb green body into the ceramic honeycomb article containing cordierite and having a total porosity greater than 42% and less than 56% and a pore size distribution wherein less than 15% of the total porosity has a pore diameter less than 10 μm, and less than 20% of the total porosity has a pore diameter greater than 30 μm. 28. The method of claim 27 wherein the pore former comprises a potato starch. 29. The method of claim 27 wherein the pore former is present in an amount of from 5 wt. % to 20 wt. % relative to the total weight of the inorganic batch components. 30. The method of claim 27 wherein the pore former comprises a potato starch having a median particle diameter in the range of from 45 μm to 55 μm. 31. The method of claim 27 wherein the inorganic batch components are selected to provide a sintered phase cordierite composition, as characterized on a oxide weight basis, consisting essentially of: about 49 to about 53 percent by weight SiO2, about 33 to about 38 percent by weight Al2O3, and about 12 to about 16 percent by weight MgO. 32. The method of claim 27 wherein the effective firing conditions comprise firing the honeycomb green body at a maximum soak temperature in range of from 1350�� C. to 1450�� C. and subsequently holding the maximum soak temperature for a period of time sufficient to convert the honeycomb green body into ceramic honeycomb article containing cordierite. 33. The method of claim 32 wherein the maximum soak temperature is in the range of from approximately 1415�� C. to approximately 1435�� C. 34. The method of claim 32 wherein the maximum soak temperature is achieved by increasing the temperature above about 1300�� C. to the maximum soak temperature at an average ramp rate less than or equal to 60�� C./hour. 35. The method of claim 32 wherein the maximum soak temperature is achieved by increasing the temperature to about 1300�� C. at an average ramp rate between 10�� C./hour and 70�� C./hour.