| abstract |
A columnar honeycomb structure including columnar honeycomb segments bonded to each other via bonding material layers, each of the columnar honeycomb segments including: an outer peripheral wall; and a porous partition wall disposed on an inner side of the outer peripheral wall, the partition wall defining a plurality of cells, each of the cells extending from one face to the other face to form a flow path, and a metal element embedded in each of the bonding material layers is. |