Abstract: Disclosed is a honeycomb filter for collecting fine particles that includes a wall portion formed from a base material containing ceria-zirconia composite oxide and an inorganic binder. The wall portion has a gas permeability coefficient of 1.0 ?m2 or greater and 3.0 ?m2 or less.

Abstract: Disclosed is a honeycomb filter for collecting fine particles that includes a wall portion formed from a base material containing ceria-zirconia composite oxide and an inorganic binder. In a pore diameter distribution in which a pore diameter and a log differential pore volume measured through mercury porosimetry are respectively represented by a horizontal axis and a vertical axis, the wall portion has a peak in a range in which the pore diameter is greater than or equal to 0.01 ?m and less than 1 ?m and a peak in a range in which the pore diameter is greater than or equal to 1 ?m and less than or equal to 50 ?m.

Abstract: The present invention relates to a honeycomb structured body including a honeycomb fired body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween, wherein the honeycomb fired body is an extrudate containing ceria-zirconia composite oxide particles and alumina particles, and when the pore size of the partition wall of the honeycomb fired body is measured by mercury porosimetry, and the measurement results are shown as a pore size distribution curve with pore size (?m) on the horizontal axis and log differential pore volume (ml) on the vertical axis, at least one peak is present in each of the pore size ranges of 0.01 to 0.1 ?m and 0.1 to 5 ?m.

Abstract: The present invention relates to a honeycomb structured body including a honeycomb fired body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween, wherein the honeycomb fired body is an extrudate containing ceria-zirconia composite oxide particles and alumina particles, and when the pore size of the partition wall of the honeycomb fired body is measured by mercury porosimetry, and the measurement results are shown as a pore size distribution curve with pore size (?m) on the horizontal axis and log differential pore volume (ml) on the vertical axis, at least one peak is present in each of the pore size ranges of 0.01 to 0.1 ?m and 0.1 to 5 ?m.

Abstract: The present invention relates to a honeycomb structured body including a honeycomb fired body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween, wherein the honeycomb fired body is an extrudate containing ceria-zirconia composite oxide particles and alumina particles, the ceria-zirconia composite oxide particles have an average particle size of 1 to 50 ?m, and the ceria-zirconia composite oxide particles include a cracked particle.

Abstract: The present invention relates to a honeycomb structured body including a honeycomb fired body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween, wherein the honeycomb fired body is an extrudate containing ceria-zirconia composite oxide particles, ?-alumina particles, ?-alumina, and ?-alumina fibers, and the honeycomb fired body has a porosity of 55 to 70%.

Abstract: A honeycomb structural body includes a honeycomb unit having a plurality of through holes defined by partition walls and arranged in a longitudinal direction of the honeycomb unit and having macro-pores having an average pore diameter approximately 0.1 ?m or more and approximately 0.3 ?m or less. The macro-pores have a porosity approximately 30% or more and approximately 40% or less. The honeycomb unit includes a phosphate group zeolite and an inorganic binder.

Abstract: A honeycomb structural body includes at least one honeycomb unit which has a longitudinal direction. The at least one honeycomb unit includes plural cell walls, an inorganic binder, and inorganic particles. The plural cell walls extends along the longitudinal direction from one end face to another end face of the at least one honeycomb unit to define plural cells. The inorganic particles include ceria particles, and a ceramic material which has a degree of self-sintering lower than a degree of self-sintering of the ceria particles.

Abstract: A honeycomb structural body includes a honeycomb unit having a plurality of through holes defined by partition walls and arranged in a longitudinal direction of the honeycomb unit and having macro-pores having an average pore diameter approximately 0.1 ?m or more and approximately 0.3 ?m or less. The macro-pores have a porosity approximately 30% or more and approximately 40% or less. The honeycomb unit includes a phosphate group zeolite and an inorganic binder.

Abstract: A honeycomb structure includes at least one honeycomb unit. The at least one honeycomb unit has cell walls extending from one end face to another end face of the at least one honeycomb unit along a longitudinal direction of the at least one honeycomb unit to define cells. The at least one honeycomb unit includes zeolite, inorganic particles, and inorganic binder. The zeolite includes a hydroxyl group. The inorganic particles includes a hydroxyl group. A hydroxyl group content in the inorganic particles is greater than a hydroxyl group content in the zeolite.

Abstract: A honeycomb structure includes at least one honeycomb unit. In a pore distribution curve, the at least one honeycomb unit has one or more peak values of the log differential pore volume in a pore diameter range from about 0.006 ?m to 0.06 ?m and greater than 0.06 ?m and less than or equal to about 1 ?m. A volume of pores having diameters in a range from a peak pore diameter minus 0.03 ?m to plus 0.03 ?m is from about 60% to about 95% of a volume of pores having diameters greater than 0.06 ?m and less than or equal to about 1 ?m. The peak pore diameter corresponds to a highest one of the peak values of the log differential pore volume in the pore diameter range greater than 0.06 ?m and less than or equal to about 1 ?m.

Abstract: A honeycomb structural body includes at least one honeycomb unit which has a longitudinal direction. The at least one honeycomb unit includes plural cell walls, an inorganic binder, and inorganic particles. The plural cell walls extends along the longitudinal direction from one end face to another end face of the at least one honeycomb unit to define plural cells. The inorganic particles include ceria particles, and a ceramic material which has a degree of self-sintering lower than a degree of self-sintering of the ceria particles.