| abstract |
The honeycomb structure of the present invention includes a columnar honeycomb unit that includes inorganic particles and an inorganic binder, and a plurality of cells extending from one end face to the other end face along the longitudinal direction are partitioned by cell walls. In the honeycomb structure, the inorganic particles include a first material and a second material, the first material includes a NOx adsorbing material (for example, ceria), and the second material includes an ammonia adsorbing material. A material (for example, zeolite) is included, and the cell wall is coated with a third material (for example, zeolite). |