Abstract: A honeycomb filter includes a honeycomb structure and a zeolite. The honeycomb structure includes cell walls having a porosity of about 55% to about 65% and extending along a longitudinal direction of the honeycomb structure to define cells between the cell walls. Each of the cells is sealed at either end of the cells. The zeolite is supported on the cell walls of the honeycomb structure. An amount of the zeolite supported on the cell walls is from about 80 g/L to about 150 g/L. A thermal conductivity of the cell walls supporting the zeolite is about 3 W/mK or more.

Abstract: A honeycomb filter includes cell walls. The cell walls extend along a longitudinal direction of the honeycomb filter to define a plurality of cells each of which has one end and another end opposite to the one end along the longitudinal direction. A majority of the plurality of cells are sealed cells sealed at either the one end or the another end. A part of the plurality of cells are open cells open at both of the one end and the another end. A number of the open cells is from about 0.1% to about 4.9% of a number of the plurality of cells.

Abstract: A honeycomb structured body including a plurality of cells that are placed in parallel with one another in a longitudinal direction with a cell wall therebetween, and a sealing portion sealing either one of the end portions of the cells. The honeycomb structured body has a porosity of at least about 70% and at most about 95% and having a length about 0.2 to about 0.9 times a diameter thereof, where the length is in the longitudinal direction of the honeycomb structured body, and the diameter is of a cross-section perpendicular to the longitudinal direction of the honeycomb structured body.

Abstract: An exhaust gas conversion system includes an oxide catalyst, a filter, a selective catalytic reduction catalyst and an ammonia supplying device. The oxide catalyst, the filter and the selective catalytic reduction catalyst are sequentially arranged in a direction in which an exhaust gas flows in an exhaust path of a diesel engine. The ammonia supplying device is positioned between the oxide catalyst and the filter and configured to supply ammonia.

Abstract: A honeycomb filter includes a honeycomb structure and a zeolite. The honeycomb structure has cell walls to define cells between the cell walls. The zeolite is supported on the cell walls. An amount of the zeolite is from about 80 g/L to about 150 g/L. The cells include a large volume cell and a small volume cell. A porosity of the cell walls is from about 55% to about 65%. A proportion of a sum of a pore volume A and a pore volume B relative to a total pore volume C is about 20% or less. The pore volume A indicates a pore volume of pores having a pore diameter of one half or less of the average pore diameter. The pore volume B indicates a pore volume of pores having a pore diameter of twice or more the average pore diameter.

Abstract: 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 therebetween. Herein, a cross-sectional area of the honeycomb unit on a cross-section perpendicular to the length direction is at least about 5 cm2 and at most about 50 cm2, the honeycomb unit includes inorganic fibers and/or whiskers in addition to inorganic particles, and a Young's modulus of the honeycomb unit is at least about 50% and at most about 150% of a Young's modulus of the sealing material layer.

Abstract: 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).

Abstract: A honeycomb filter includes a honeycomb structure and a zeolite. The honeycomb structure has cell walls to define cells between the cell walls. The zeolite is supported on the cell walls. An amount of the zeolite is from about 80 g/L to about 150 g/L. A porosity of the cell walls is from about 55% to about 65%. A cell density in a cross section perpendicular to the longitudinal direction is from about 46.5 pcs/cm2 to about 62.0 pcs/cm2. A thickness of the cell walls is from about 0.2 mm to about 0.3 mm. The cells include a large volume cell and a small volume cell. An area ratio of a cross sectional area of the large volume cell relative to a cross sectional area of the small volume cell is from about 1.4 to about 2.4.

Abstract: An exhaust gas purifying apparatus includes a metal casing and a honeycomb filter installed in the metal casing. The honeycomb filter includes cells, a first end face, and a second end face. The cells include a first cell and a second cell provided alternately. The first cell includes an open end on the first end face side and a sealed end on the second end face side. The second cell includes an open end on the second end face side and a sealed end on the first end face side. A cross-sectional area of the first cell is smaller than a cross-sectional area of the second cell. The first end face is disposed on a gas inlet side of the metal casing. The second end face is disposed on a gas outlet side of the metal casing.

Abstract: A catalyst supporting honeycomb including a pillar-shaped honeycomb structure having a plurality of cells formed in parallel with one another in a longitudinal direction with a cell wall interposed therebetween, and catalyst particles supported on the honeycomb structure. The catalyst particles include an oxide catalyst, an average particle diameter of which is at least about 0.05 ?m and at most about 1.00 ?m.

Abstract: A honeycomb structure includes at least one honeycomb member including inorganic fibers and having walls extending along a longitudinal direction to define cells. A catalyst is provided on the wall in an amount of at least about 100 g and at most about 400 g per liter of volume of the honeycomb structure. The honeycomb member has a pore distribution measured using mercury porosimetry in which a pore distribution curve has a first peak in a range from about 0.005 ?m to about 0.03 ?m of a pore diameter, a second peak in a range from about 1 ?m to about 15 ?m of the pore diameter, and a third peak in a range from about 15 ?m to about 50 ?m of the pore diameter, where the curve is drawn by plotting the pore diameter (?m) on an X-axis and a log differential pore volume (mL/g) on a Y-axis.

Abstract: 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.

Abstract: 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 ?L of thermal expansion of the sealing material layer and a coefficient ?F of thermal expansion of the honeycomb unit satisfy the following relationship: about 0.01?|?L??F|/?F?about 1.0.

Abstract: A honeycomb filter includes cell walls. The cell walls extend along a longitudinal direction of the honeycomb filter to define a plurality of cells each of which has one end and another end opposite to the one end along the longitudinal direction. A majority of the plurality of cells are sealed cells sealed at either the one end or the another end. A part of the plurality of cells are open cells open at both of the one end and the another end. A number of the open cells is from about 0.1% to about 4.9% of a number of the plurality of cells.

Abstract: A honeycomb filter includes a honeycomb structure and a zeolite. The honeycomb structure has cell walls to define cells between the cell walls. The zeolite is supported on the cell walls. An amount of the zeolite is from about 80 g/L to about 150 g/L. The cells include a large volume cell and a small volume cell. A porosity of the cell walls is from about 55% to about 65%. A proportion of a sum of a pore volume A and a pore volume B relative to a total pore volume C is about 20% or less. The pore volume A indicates a pore volume of pores having a pore diameter of one half or less of the average pore diameter. The pore volume B indicates a pore volume of pores having a pore diameter of twice or more the average pore diameter.

Abstract: A honeycomb filter includes a honeycomb structure and a zeolite. The honeycomb structure includes cell walls having a porosity of about 55% to about 65% and extending along a longitudinal direction of the honeycomb structure to define cells between the cell walls. Each of the cells is sealed at either end of the cells. The zeolite is supported on the cell walls of the honeycomb structure. An amount of the zeolite supported on the cell walls is from about 80 g/L to about 150 g/L. A thermal conductivity of the cell walls supporting the zeolite is about 3 W/mK or more.

Abstract: A honeycomb filter includes a honeycomb structure and a zeolite. The honeycomb structure has cell walls to define cells between the cell walls. The zeolite is supported on the cell walls. An amount of the zeolite is from about 80 g/L to about 150 g/L. A porosity of the cell walls is from about 55% to about 65%. A cell density in a cross section perpendicular to the longitudinal direction is from about 46.5 pcs/cm2 to about 62.0 pcs/cm2. A thickness of the cell walls is from about 0.2 mm to about 0.3 mm. The cells include a large volume cell and a small volume cell. An area ratio of a cross sectional area of the large volume cell relative to a cross sectional area of the small volume cell is from about 1.4 to about 2.4.

Abstract: An exhaust gas purifying apparatus includes a metal casing and a honeycomb filter installed in the metal casing. The honeycomb filter includes cells, a first end face, and a second end face. The cells include a first cell and a second cell provided alternately. The first cell includes an open end on the first end face side and a sealed end on the second end face side. The second cell includes an open end on the second end face side and a sealed end on the first end face side. A cross-sectional area of the first cell is smaller than a cross-sectional area of the second cell. The first end face is disposed on a gas inlet side of the metal casing. The second end face is disposed on a gas outlet side of the metal casing.

Abstract: 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.