摘要:
A honeycomb structure having multiple honeycomb units united through a seal material layer, wherein each honeycomb unit has multiple through holes arranged side by side in a longitudinal direction and separated from each other by the wall surfaces of the through holes, is disclosed. The honeycomb units include at least: ceramic particles; and at least one of inorganic fibers and whiskers. At least one of the honeycomb units has a cross section perpendicular to a longitudinal direction thereof, the cross section having an area greater than or equal to about 5 cm2 and less than or equal to about 50 cm2. The flatness of the exterior wall of each of the honeycomb units is about 0.1 mm to about 1.5 mm.
摘要:
Ceramic particles, fine particles having smaller average particle diameter smaller than that of the ceramic particles and a reduction-resistant material are mixed to obtain a puddle. The reduction-resistant material is a material that is reduced by carbon at a higher temperature as compared with a temperature at which an oxide (for example, silica) of an element contained in the ceramic particles is reduced. The average particle diameter of the ceramic particles is preferably about in a range of 5 to 100 μm and the average particle diameter of the fine particles is preferably about in a range of 0.1 to 10 μm. The reduction-resistant material is, for example, alumina. This puddle is extrusion molded into a honeycomb filter and the molded object is sintered at about 1600 to 2200° C.
摘要:
A honeycomb structure having multiple through holes includes at least ceramic particles and an inorganic binder. A wall thickness of each wall between adjoining through holes, on which a catalyst component is carried, is designed to be not greater than about 0.25 mm. The honeycomb structure satisfies a relation of Y≧250×X+22500 (50≦X≦80), where X denotes an aperture ratio (%) of a honeycombed face of the honeycomb structure perpendicular to the multiple through holes and Y denotes a specific surface area per unit volume (m2/L) of the honeycomb structure.
摘要翻译:具有多个通孔的蜂窝结构体至少包括陶瓷颗粒和无机粘合剂。 在其上承载有催化剂组分的相邻通孔之间的每个壁的壁厚设计为不大于约0.25mm。 蜂窝结构满足Y> = 250×X + 22500(50 <= X <= 80)的关系,其中X表示与多个通孔垂直的蜂窝结构体的蜂窝面的开口率(%),Y表示 蜂窝结构体的单位体积比(m 2 / L / L)的比表面积。
摘要:
A honeycomb structure is disclosed that includes plural through-holes separated by plural partition walls and provided in parallel along a longitudinal direction, wherein the thickness of each of the partition walls is less than or equal to about 0.25 mm, the length of each of the through-holes is equal to or greater than about 50-fold of a hydraulic diameter of each of the through-holes and less than or equal to about 350-fold of the hydraulic diameter of each of the through-holes, and an open area ratio (X) % of a cross section of the honeycomb structure perpendicular to the through-holes and a surface area per unit volume (Y (m2/L)) satisfy Y≧250×X+22500 (about 50≦X≦about 85).
摘要:
A honeycomb structure including a plurality of cells arranged in parallel while being separated by cell walls, and extending in a longitudinal direction of the honeycomb structure. Each cell is sealed at one of end portions thereof. In the honeycomb structure, the relation expressed by an expression (1) is satisfied: 11/6−10/3×A≦B (1) where A (mm) designates thickness of the cell walls, and B (m2/cm3) designates a surface area per unit volume of the cell walls.
摘要:
A honeycomb structured body of the present invention includes plural pillar-shaped honeycomb units which are bonded to one another through sealing material layers, each unit having in the longitudinal direction a large number of cells placed in parallel with a cell wall therebetween, wherein each honeycomb unit includes inorganic fibers and/or whiskers in addition to inorganic particles, a cross-sectional area of the honeycomb unit on a cross section perpendicular to the longitudinal direction is set to at least about 5 cm2 and at most about 50 cm2, and a coefficient αL of thermal expansion of the sealing material layer and a coefficient αF of thermal expansion of the honeycomb unit satisfy the following relationship: about 0.01≦|αL−αF|/αF≦about 1.0.
摘要:
A honeycomb structured body of the present invention is a honeycomb structured body in which plural pillar-shaped honeycomb units are bonded to one another through sealing material layers, each unit having in the longitudinal direction a large number of cells placed in parallel with a cell wall interposed therebetween. Herein, each honeycomb unit includes inorganic fibers and/or whiskers in addition to inorganic particles. A cross-sectional area of the honeycomb unit on a cross section perpendicular to the longitudinal direction is at least about 5 cm2 and at most about 50 cm2. A region in which a sealing material layer is not formed is provided on both ends of the side faces of each of the honeycomb unit, each of the ends accounting for at least about 0.3% and at most about 5% of the length of the honeycomb structured body.
摘要:
A honeycomb structure 10 includes: multiple honeycomb units 11 having multiple through holes 12; and a seal layer 14 that joins honeycomb units 11 with each other via respective closed outer faces 13 of the honeycomb units 11 where the through holes are not open. The honeycomb unit 11 includes at least inorganic particles, inorganic fibers and/or whiskers. A cross section area of a honeycombed face of the honeycomb unit perpendicular to the through holes 12 is about 5 to about 50 cm2. The flatness of an entire end face as the honeycombed faces of the honeycomb units 11 joined by the seal layer 14 is about 2.5 mm or less. The level difference between the end faces of the honeycomb units 11 is about 2.0 mm or less.
摘要:
A honeycomb structure is disclosed that includes plural honeycomb units bonded together by using a sealing material layer, each of the honeycomb units including plural through-holes separated by plural partition walls and provided in parallel along a longitudinal direction of the honeycomb units, wherein each of the honeycomb units includes at least ceramic particles, and inorganic fibers and/or whisker, an area of a cross section of one of the honeycomb units perpendicular to the longitudinal direction of the one of the honeycomb units is greater than or equal to about 5 cm2 and less than or equal to about 50 cm2, and a circularity of the cross section of the honeycomb structure perpendicular to the longitudinal direction of the honeycomb structure is greater than or equal to about 1.0 mm and less than or equal to about 2.5 mm.
摘要:
A honeycomb structured body of the present invention is a honeycomb structured body in which a plurality of porous ceramic members are combined with one another through an adhesive layer, each of the porous ceramic members having a plurality of cells which are allowed to penetrate in a longitudinal direction with a wall portion therebetween and either one end of which is sealed, with a catalyst supporting layer being adhered to the wall portion, wherein, supposing that the rate of the pore volume of pores having a pore diameter of 10 μm or less to the entire pore volume of the porous ceramic member is X1 (%), the porosity is Y1 (%) and the weight of the catalyst supporting layer is Z1 (g/l), these X1, Y1 and Z1 are allowed to satisfy the following expressions (1) and (2): X1≦20−Z1/10 (1), and Y1≧35+7Z1/40 (2) (where about 20≦Z1≦about 150).