| 摘要 |
A honeycomb catalyst body having high mechanical strength, less pressure loss, and suitable purification performance is provided, and a honeycomb catalyst body 100 includes a plugged honeycomb structure 10 having porous partition walls 5 defining a plurality of cells 4 extending from an inflow side end face 2 to an outflow side end face 3 and to become through channels of a fluid, inflow side plugged portions 8(8a) provided at outflow side ends of the predetermined cells 4(4a), outflow side plugged portions 8(8b) provided at inflow side ends of the remaining cells 4(4b), and porous projecting portions 9 projecting so as to extend from the partition walls 5 into the cells 4 and being formed integrally with the partition walls 5; and a catalyst loaded onto the projecting portions 9 of the plugged honeycomb structure 10, wherein a porosity of each of the partition walls 5 of the plugged honeycomb structure 10 is 40% or more and smaller than 60%, a thickness of each of the projecting portions is from 30 to 140% of a thickness of the partition wall, and an amount of the catalyst to be loaded onto the partition walls 5 of the plugged honeycomb structure 10 is smaller than an amount of the catalyst to be loaded onto the projecting portions 9. |
