Patent ID: 9359929
Filing Date: 2016-06-07
CPC Classification: B01D,C04B,F01N

Claim Text:
1. A honeycomb structure comprising: a tubular honeycomb structure body having porous partition walls to define and form a plurality of cells which become through channels for a fluid and extend from an inflow end surface which is an end surface on an inflow side of the fluid to an outflow end surface which is an end surface on an outflow side of the fluid, and an outer peripheral wall positioned in the outermost periphery; and a pair of electrodes disposed on a side surface of the tubular honeycomb structure body, wherein an electrical resistivity of the tubular honeycomb structure body is from 1 to 200 Ωcm, each of the pair of electrodes is formed into a band-like shape extending in an extending direction of the plurality of cells of the tubular honeycomb structure body, and in a cross section perpendicular to the extending direction of the plurality of cells, one electrode in the pair of electrodes is disposed on a side opposite to the other electrode in the pair of electrodes via a center of the tubular honeycomb structure body, the tubular honeycomb structure body is constituted of an outer peripheral region including a side surface and a central region as a region around the center which excludes the outer peripheral region, the outer peripheral region completely surrounding the central region, and an electrical resistivity of the central region is lower than an electrical resistivity of the outer peripheral region.