Honeycomb structure

Details Honeycomb structure Honeycomb structure

2007-09-28

2011-10-18

Greene, Jason M (Department: 1776)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C055S522000, C055S523000, C055S385300, C055SDIG030, C055S524000

Reexamination Certificate

active

08039415

ABSTRACT:
A honeycomb structure includes large-volume cells and small-volume cells with a cell wall therebetween; a plug sealing at either one of end portions of the cells; and a catalyst supported on the cell wall. The large-volume cell has a larger cross-sectional area perpendicular to its longitudinal direction than that of the small-volume cell. The large-volume cell is sealed at one end portion of the honeycomb structure, while the small-volume cell is sealed at the other end portion of the honeycomb structure. The catalyst is supported only on the cell walls forming the large-volume cells, or on both of the cell walls forming said large-volume cells and the cell walls forming said small-volume cells. An amount of the catalyst supported on the cell walls forming the large-volume cells is larger per unit volume than that on the cell walls forming the small-volume cells.

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