摘要:
A honeycomb structural body of the present invention includes plural honeycomb units adhered to each other by interposing an adhesive layer, each of the plural honeycomb units having a plurality of through-holes arranged in a longitudinal direction thereof and containing a conductive ceramic material. The honeycomb structural body has a circular-pillar shape or an elliptical-pillar shape. The honeycomb unit has a fan-like shaped or an elliptical fan-like shaped cross section perpendicular to the longitudinal direction. A pair of electrodes is formed at a part of an outer peripheral surface of the honeycomb unit that does not face the adhesive layer and an area between the honeycomb unit and the adhesive layer and/or formed at an area between the outer peripheral surface of the honeycomb unit and the adhesive layer and an area including a center of the fan-like shaped or the elliptical fan-like shaped cross section perpendicular to the longitudinal direction.
摘要:
Disclosed is a honeycomb structure configured to include a pillar-shaped honeycomb unit divided by cell walls. In the honeycomb structure, a pair of electrodes is arranged at the cell walls and/or a peripheral wall of the honeycomb unit, the cell walls of the honeycomb unit are composed of a ceramic aggregate and pores formed in the aggregate, and the cell walls contain a substance having an electrical resistivity lower than an electrical resistivity of ceramic forming the aggregate.
摘要:
Disclosed in a honeycomb structure including a honeycomb unit including a zeolite, an inorganic binder, and plural through-holes intervened by a partition wall, extending in its longitudinal directions and provided in parallel, wherein a thickness of the partition wall is 0.10 mm or more and 0.50 mm or less, and where its cross section perpendicular to the longitudinal directions is dual-partitioned at equally-spaced intervals from its periphery to its center, the thickness of the partition wall in its periphery side area is greater than that in its center side area and an opening ratio of the cross section perpendicular to the longitudinal directions in the center side area is greater than that in the periphery side area.
摘要:
A honeycomb structure (100) is disclosed that includes a honeycomb unit (130) including zeolite and inorganic binder, wherein, in the honeycomb unit, plural cells extend from a first end face (110) to a second end face (115) along a longitudinal direction of the honeycomb unit (130), and the plural cells (121) are separated from each other by interposing cell walls (123), the honeycomb structure (100) characterized in that: a shape of a cross-sectional surface orthogonal to the longitudinal direction of the cells (121) is substantially a square; an aperture ratio of the honeycomb unit (130) is in a range from 50% to 65%; and a following formula is satisfied: 12.5V+50
摘要:
A honeycomb structure includes an inorganic particle and inorganic binder. The honeycomb structure includes plural through-holes arranged in parallel to each other in a longitudinal direction interposing a partition wall. Circularity of each opposite end face of the honeycomb structure, which is almost vertical to the longitudinal direction, is 1.5 to 4.0 mm. The circularity of one of the end faces is different from the circularity of the other end face.
摘要:
A disclosed honeycomb structure includes plural honeycomb units. Each of the honeycomb units has a longitudinal direction and includes inorganic particles, an inorganic binder, and cell walls defining cells extending along the longitudinal direction from one end face to the other. The honeycomb units are bonded together by an adhesive such that the cells are oriented in the same direction. The amount of ammonia desorbed per unit mass of the honeycomb units, measured by an NH3-TPD method, is 5 to 100 times greater than the amount of ammonia desorbed per unit mass of the adhesive.
摘要:
A honeycomb structure having a honeycomb unit is disclosed in which zeolite and an inorganic binder are contained and plural cells extending from one end face to the other end face along a longitudinal direction are partitioned by cell walls. In the honeycomb structure, the content of the zeolite per apparent unit volume of the honeycomb unit is 230 g/L or greater, the porosity of all the pores in the cell walls is 40% or less, the porosity of pores having diameters in the range of 0.005 µm through 0.02 µm in the cell walls is 5% or greater, and the porosity of pores having diameters in the range of 0.05 µm through 0.2 µm in the cell walls is 17.5% or greater.