PLUGGED HONEYCOMB STRUCTURE AND MANUFACTURING METHOD OF THE SAME

摘要

There is disclosed a plugged honeycomb structure which can effectively inhibit a rise of a pressure loss generated due to deposition of particulate matter on partition walls while lowering the highest temperature during regeneration to inhibit deterioration of a trapping layer. A plugged honeycomb structure 100 includes a tubular honeycomb structure body 4 having partition walls 10 including a porous partition wall base material 1 defining a plurality of cells 2 which become through channels for a fluid and extend from a first end face 11 to a second end face 12, and a porous trapping layer 6 disposed on the surface of the partition wall base material 1; and plugging portions 5 disposed in open ends of predetermined cells 2b in the first end face 11 and open ends of residual cells 2a in the second end face 12, and the partition wall base material 1 is constituted of a porous body including ±-Al 2 O 3 as a main phase and further including aluminum titanate and glass.