Ibiden Company Limited

Chizuru Kasai

Takahiko Ido

A honeycomb structure includes at least one honeycomb unit having a longitudinal direction. The honeycomb unit includes SOx storage agent, inorganic particles, inorganic binder, and a partition wall extending along the longitudinal direction to define plural through holes. An expression Y&#x2267;&#x2212;26X+40000 (0&#x3c;X&#x2266;approximately 500) is satisfied, wherein 'X' represents an amount [g] of SOx stored in the honeycomb structure, and 'Y' represents a specific surface area [m/L] of the honeycomb structure when &#x201c;X&#x201d; [g] of SOx is stored in the honeycomb structure.

Honeycomb structure

A honeycomb structure includes at least one a honeycomb unit having a longitudinal direction. The at least one honeycomb unit includes a SOx occluding agent, inorganic particles, an inorganic binder, and partition walls extending along the longitudinal direction to define plural through-holes. A relationship 5X+30&#x2266;Y&#x2266;5X+45 (about 1.0&#x2266;X&#x2266;about 2.5) is satisfied, wherein a content of the SOx occluding agent in the partition walls is expressed by X (mol/L) and a porosity of the at least one honeycomb unit is expressed by Y (%).

A disclosed honeycomb structure includes at least one honeycomb unit having parallel through holes separated by partition walls and extending in the longitudinal direction, the honeycomb unit including a first SOx-occluding agent, first inorganic particles, and an inorganic binder; and coating layers formed on the partition walls and including a second SOx-occluding agent and second inorganic particles. In the honeycomb structure, the basicity of the honeycomb unit is higher than that of the coating layers.

A honeycomb structure includes a plurality of pillar-shaped honeycomb fired bodies, each having a large number of cells longitudinally placed in parallel with one another with a cell wall therebetween. The honeycomb fired bodies are combined with one another by interposing adhesive layers containing at least ceramic particles. In the ceramic particles contained in the adhesive layers, the number of those particles having a particle diameter larger than an average pore diameter of the honeycomb fired body is set to 30% or less of the total number of the ceramic particles.

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Gifu, Japan

Chizuru Kasai