Patent ID: 8221867

Claim:
A honeycomb structure comprising: a honeycomb unit comprising: zeolite an amount of which contained per apparent unit volume of the honeycomb unit is approximately 230 g/L or more; inorganic binder; and cell walls extending from one end to another end along a longitudinal direction of the honeycomb unit to define cells, wherein the zeolite and the organic binder are components of a material used to form the honeycomb unit including the cell walls, wherein mathematical formulae [1] and [2] are satisfied when a thickness of the cell walls is defined as X mm and an average pore diameter of a surface of the cell walls observed by a microscope is defined as Y μm: X +0.07≦ Y ≦ X +0.27 [1] approximately 0.15≦ X ≦approximately 0.35 [2].