Abstract: A pillar-shaped honeycomb structure has a plurality of cells longitudinally placed in parallel with one another with a wall portion therebetween, wherein the honeycomb structure mainly includes inorganic fibers which form the honeycomb structure without lamination interfaces.

Abstract: A honeycomb filter includes a pillar-shaped honeycomb fired body having a large number of cells each sealed at either end thereof and placed longitudinally in parallel with one another with a cell wall therebetween. A sum of cross-sectional areas perpendicular to a longitudinal direction of cells having openings on a gas inlet side is about 1.5 to about 3.0 times larger than a sum of cross-sectional areas of cells having openings on a gas outlet side. A catalyst supporting layer is formed in a catalyst-supporting-layer area covering about 25 to about 90% of an overall length of the honeycomb filter, and substantially no catalyst supporting layer is formed in a non-catalyst-supporting-layer area covering about 10% of the overall length of the honeycomb filter. The non-catalyst-supporting-layer area abuts the gas outlet side. A thermal conductivity of the non-catalyst-supporting-layer area is higher than a thermal conductivity of the catalyst-supporting-layer area.

Abstract: A honeycomb filter includes a pillar-shaped honeycomb fired body having first and second end faces on a gas inlet and outlet sides, respectively. A catalyst supporting layer is formed in a catalyst-supporting-layer area covering about 25% to about 90% of an overall length of the honeycomb fired body and abutting the first end face on the gas inlet side. Substantially no catalyst supporting layer is formed in a non-catalyst-supporting-layer area covering about 10% of the overall length on the gas outlet side. A thermal conductivity of the non-catalyst-supporting-layer area is higher than that of the catalyst-supporting-layer area, and inequalities, (a?b)?about 5, and about 10?a?about 20 are satisfied where “a” is a mode of pore diameters obtained by measuring pore distribution of the non-catalyst-supporting-layer area and “b” is a mode of pore diameters obtained by measuring pore distribution of the catalyst-supporting-layer area.

Abstract: A honeycomb filter includes a pillar-shaped honeycomb fired body having cells longitudinally disposed with a cell wall and having first and second end faces on gas inlet and outlet sides, respectively. A catalyst supporting layer is formed in a catalyst-supporting-layer area covering at least about 25% and at most about 90% of an overall length of the fired body and that abuts the first end face. Substantially no catalyst supporting layer is formed in a non-catalyst-supporting-layer area covering about 10% of the overall length that abuts the second end face. A thermal conductivity of the non-catalyst-supporting area is larger than that of the catalyst-supporting-layer area, where gas permeability coefficient k1 (?m2) of a cell wall in the non-catalyst-supporting-layer area and gas permeability coefficient k2 (?m2) of a cell wall in the catalyst-supporting-layer area satisfy inequalities, (k1?k2)?about 0.5 and about 1.0?k1?about 1.5.

Abstract: An exhaust gas purifying system is provided that includes a catalyst carrier, and a honeycomb filter. The filter includes a pillar-shaped honeycomb fired body having a plurality of cells longitudinally disposed in parallel with one another with a cell wall therebetween, with either one end of each cell being sealed. The carrier is placed in an exhaust gas passage on an upstream side of the filter, and at a predetermined distance from the filter. A catalyst supporting layer is formed in the filter in a catalyst-supporting area covering about 25 to about 90% of an overall length of the filter, and substantially no catalyst supporting layer is formed in a non-catalyst-supporting area covering about 10% of the overall length, the non-catalyst supporting area abutting an outlet side of the filter. A thermal conductivity of the non-catalyst-supporting area is higher than a thermal conductivity of the catalyst-supporting area.

Abstract: A honeycomb structure is manufactured by molding a pillar-shaped honeycomb molded body having a large number of cells disposed in parallel with one another in a longitudinal direction with a cell wall therebetween by extrusion-molding a raw material composition including a ceramic powder and a binder, and carrying out a firing treatment on the honeycomb molded body to manufacture a honeycomb fired body. A plurality of the honeycomb fired bodies are provided, and both end faces of each of the plurality of the honeycomb fired bodies are hold with a holding member after positioning the plurality of the honeycomb fired bodies on a predetermined position. An adhesive paste is injected into a gap between the plurality of honeycomb fired bodies held on the predetermined position. The adhesive paste is dried and solidified to form an adhesive layer.

Abstract: A catalyst carrier including a honeycomb structure having two end faces and a peripheral portion connecting the end faces to each other and in which cells extending between the end faces are separated by cell walls. The catalyst carrier further includes a coated layer that is disposed on the peripheral portion throughout a full length of the honeycomb structure. A reinforcing member is disposed on the peripheral portion of the honeycomb structure, where the reinforcing member has two reinforcing rings. The reinforcing rings are disposed to surround the periphery of each of the end faces of the honeycomb structure respectively.

Abstract: A catalyst carrier including a ceramic block having two open faces, an outer peripheral surface, and multiple cells divided by a cell wall and extending between the open faces. The ceramic block has multiple honeycomb units combined by interposing an adhesive layer, where the honeycomb units include an outer-peripheral-side honeycomb unit and a center-side honeycomb unit combined to form the outer peripheral part and the center part, respectively, of the block. The outer-peripheral-side honeycomb unit has an outer peripheral cell wall forming the outer peripheral surface of the outer-peripheral-side honeycomb unit. The outer peripheral cell wall includes an outermost peripheral cell wall forming part of the outer peripheral surface of the block. A cell of the outer-peripheral-side honeycomb unit in contact with the outermost peripheral cell wall thereof has a corner part having a curved surface, where the corner part is on the side contacting the outermost peripheral cell wall.

Abstract: A honeycomb filter is provided that includes a pillar-shaped honeycomb fired body having a plurality of cells longitudinally disposed in parallel with one another with a cell wall therebetween, and with either one end of each of the cells being sealed. The honeycomb fired body has a first end face on a gas inlet side and a second end face on a gas outlet side. The cell wall has a thickness that is about 0.20 to about 0.28 mm. A catalyst supporting layer is formed in a catalyst-supporting-layer area covering about 25% to about 90% of an overall length of the honeycomb fired body, and no catalyst supporting layer is formed in a non-catalyst-supporting-layer area covering about 10% of the overall length of the honeycomb fired body that abuts the second end face. A thermal conductivity of the non-catalyst-supporting-layer area is higher than a thermal conductivity of the catalyst-supporting-layer area.

Abstract: A honeycomb structure includes a ceramic block formed by a plurality of pillar-shaped honeycomb fired bodies each having a large number of cells longitudinally disposed in parallel with one another with a cell wall between the cells. The plurality of honeycomb fired bodies are combined with one another by interposing an adhesive layer with a sealing material layer formed on a peripheral face of the ceramic block and include a plurality of different shapes of the honeycomb fired bodies. A thickness of a peripheral wall forming the peripheral face of the ceramic block is virtually even. A shape of a cell located at an outermost periphery of the ceramic block is virtually identical with a shape of a cell located at a place other than the outermost periphery of the ceramic block. On the peripheral wall of the honeycomb fired body, a step is provided.

Abstract: A honeycomb structure includes a plurality of pillar-shaped honeycomb fired bodies each having a large number of cells longitudinally disposed in parallel with one another with a cell wall therebetween. The plurality of pillar-shaped honeycomb fired bodies are combined with one another by interposing an adhesive layer. A catalyst supporting layer is included in the adhesive layer which abuts one end face side of the honeycomb structure, while substantially no catalyst supporting layer is included in the adhesive layer which abuts another end face side of the honeycomb structure.

Abstract: A catalyst supporter having a honeycomb structure whose cells extend in a longitudinal direction thereof. The cells are partitioned by a cell wall, and a coat layer is placed on a peripheral portion of the honeycomb structure. A thickness D of the coat layer is within a range of 2 mm<D?about 10 mm.

Abstract: Mixed particles including noble metal particles of a noble metal, first particles of one or more metal oxides, and second particles of a metal oxide. The first particles of one or more metal oxides are selected from Al2O3, SiO2, ZrO2 and TiO2. The second particles of a metal oxide have a larger adsorptive interaction with the noble metal of the noble metal particles as compared with the metal oxide of the first particles. The noble metal particles are carried by the second particles in a larger proportion than by the first particles.

Abstract: A honeycomb structure includes a plurality of pillar-shaped honeycomb fired bodies bound with one another by interposing a adhesive layer. Each of the honeycomb fired bodies has a large number of cells longitudinally placed in parallel with one another with a cell wall therebetween. An adhesive strength A between central portion honeycomb fired bodies out of the honeycomb fired bodies measured by a three-point bending strength test is at least about 0.02 and at most about 0.2 MPa. The central portion honeycomb fired bodies are positioned at a central portion of a cross-section formed by cutting the honeycomb structure perpendicularly to the longitudinal direction. The adhesive strength A is lower than an adhesive strength B between peripheral portion honeycomb fired bodies out of the honeycomb fired bodies measured by the three-point bending strength test. The peripheral portion honeycomb fired bodies form a part of a periphery the honeycomb structure.

Abstract: A ceramic filter assembly having improved exhaust gas processing efficiency. The ceramic filter assembly (9) is produced by adhering with a ceramic seal layer (15) outer surfaces of a plurality of filters (F1), each of which is formed from a sintered porous ceramic body. The seal layer (15) has a thickness of 0.3 mm to 3 mm and a thermal conductance of 0.1 W/mK to 10 W/mk.

Abstract: A thermoelectric converter including plural thermoelectric conversion modules connected in series by having p-type semiconductors and n-type semiconductors alternately provided in through holes of a ceramic honeycomb, respectively. Ends of the p-type semiconductors are connected to ends of the n-type semiconductors on both sides of the through holes.

Abstract: A thermoelectric converter including p-type semiconductors and n-type semiconductors alternately provided in corresponding first and second through holes, respectively, in a ceramic honeycomb. The first and second through holes have different cross-sectional shapes and are alternately arranged. The semiconductors have respective first and second ends thereof successively connected to different ones of the semiconductors on first and second sides, respectively, of the corresponding through holes.

Abstract: A method of manufacturing a thermoelectric converter including supplying raw materials by mutually supplying a p-type semiconductor raw material and an n-type semiconductor raw material into a piercing hole of a honeycomb made of a non-metal inorganic material. The method also includes sintering the p-type semiconductor raw material and the n-type semiconductor raw material supplied in the honeycomb to form a p-type semiconductor and an n-type semiconductor in the piercing hole of the honeycomb, and connecting the p-type semiconductor and an n-type semiconductor formed in the piercing hole of the honeycomb to each other by an electrode.

Abstract: A method is provided that includes extrusion-molding a raw material composition containing ceramic powder and a binder to manufacture a coupled honeycomb molded body having a shape in which a plurality of pillar-shaped honeycomb molded bodies, each having a number of cells disposed in parallel with one another in a longitudinal direction with a cell wall therebetween, are integrated with one another by interposing a coupling portion. The method includes firing the coupled honeycomb molded body to manufacture a coupled honeycomb fired body, cutting the coupling portion to manufacture coupling-portion-cut honeycomb fired bodies, and binding a plurality of honeycomb fired bodies by interposing an adhesive layer, where at least one of the bound honeycomb fired bodies is a coupling-portion-cut honeycomb fired body.

Abstract: A honeycomb filter includes a plurality of honeycomb fired bodies each having a longitudinal direction and a plurality of cells which are divided by cell walls and which extend in the longitudinal direction in substantially parallel with each other, each of the cells having one end sealed; and an adhesive material binding the plurality of honeycomb fired bodies. The plurality of honeycomb fired bodies includes outer peripheral honeycomb fired bodies each having a first outer wall and positioned at an outermost periphery of the honeycomb filter; and inner honeycomb fired bodies surrounded by the outer peripheral honeycomb fired bodies. Each of the inner honeycomb fired bodies has a second outer wall thinner than the first outer wall.