Outlet-coated ceramic honeycomb bodies and methods of manufacturing same

A coated honeycomb body, comprising:

• a honeycomb structure comprising a matrix of intersecting porous walls forming a plurality of axially-extending channels, at least some of the plurality of axially-extending channels being plugged at an outlet end to form inlet channels and plugged at an inlet end to form outlet channels, and
• wherein the honeycomb structure comprises a pattern of a plurality of central outlet cells surrounded by a plurality of surrounding outlet cells and a plurality of inlet cells,
• wherein the central outlet cells are larger in cross-sectional area than the surrounding outlet cells,
• wherein the central outlet cells comprise non-filtration walls and the surrounding outlet cells are devoid of non-filtration walls,
• wherein some of the outlet channels are larger in cross-sectional area than at least some of the inlet channels, and a catalyst-containing washcoat is preferentially disposed on the non-filtration walls, and
• 0.2≤CR≤0.8
• wherein CR is a coating ratio defined as an average % loading by weight of a washcoat containing the catalyst on and within filtration walls divided by an average % loading by weight of the washcoat containing the catalyst on and within the non-filtration walls.

A coated honeycomb body, comprising:

• a honeycomb structure comprising a matrix of intersecting porous walls forming a plurality of axially-extending channels, at least some of the plurality of axially-extending channels being plugged on an outlet end to form inlet channels and plugged on an inlet end to form outlet channels, wherein at least some of the outlet channels contain a filler material and a selective catalyst reduction catalyst is preferentially located within the filler material,
• wherein some of the porous walls are filtration walls that separate inlet channels from outlet channels and some of the porous walls are non-filtration walls,
• wherein the honeycomb structure comprises a pattern of a plurality of central outlet cells surrounded by a plurality of surrounding outlet cells and a plurality of inlet cells,
• wherein the central outlet cells are larger in cross-sectional area than the surrounding outlet cells,
• wherein the central outlet cells comprise non-filtration walls and the surrounding outlet cells are devoid of non-filtration walls.