HONEYCOMB STRUCTURE AND GAS PROCESSING DEVICE USING SAME

There are provided a honeycomb structure which can sufficiently maintain mechanical properties and will suffer relatively little damage of a sealing material due to heat even when collected fine particles are burned for regenerating a honeycomb structure, and a gas processing apparatus having high reliability which includes the honeycomb structure. A honeycomb structure (1) is composed of a ceramic sintered body and includes a cylindrical section (4); a partition wall section (2) having air permeability, the partition wall section (2) being disposed on an inside of the cylindrical section (4) so as to form a plurality of circulation holes (3) through which a fluid flows; a first sealing material (8) which seals openings of the plurality of circulation holes (3) on one end side of the cylindrical section (4); and a second sealing material (8) which seals openings of the plurality of circulation holes (3) on the other end of the cylindrical section (4). At least one of the first and second sealing materials (8) has pores in which a ratio (p80/p20) of a pore diameter (p80) of cumulative 80 volume% to a pore diameter (p20) of cumulative 20 volume% in a cumulative distribution curve of pore diameters is greater than or equal to 1.8 and less than or equal to 2.2.