| abstract |
A catalyst body having excellent purification efficiency and a small pressure loss and a method for producing the same are provided. A porous honeycomb structure including partition walls that define a plurality of cells that serve as fluid flow paths that penetrate from one end face to the other end face includes: (a) a catalyst substance; and (b) It is a catalyst body formed of at least one kind of substance in which a metal is supported on an oxide. In this converter, (c) 10% or more of the plurality of cells are plugged by plugging portions formed in one end portion or in the middle of the flow path, or (d) honeycomb structure The average pore diameter is 10 μm or more, or (e) the porosity is 40% or more. [Selection] Figure 1 |