HONEYCOMB STRUCTURE, MANUFACTURING METHOD THEREFOR, EXHAUST GAS PURIFICATION DEVICE, AND SILICOALUMINOPHOSPHATE PARTICLES

摘要

An object of the invention is to provide a honeycomb structure that has excellent NOx purification performance and can suppress the breakage of a honeycomb unit due to the adsorption or desorption of water, a method for manufacturing the honeycomb structure, and an exhaust gas purifying apparatus including the honeycomb structure. In addition, the honeycomb structure of the invention includes a honeycomb unit provided with a plurality of through holes arrayed in a longitudinal direction with a partition wall therebetween, in which the honeycomb unit is produced by extruding and firing raw material paste containing silicoaluminophosphate particles and an inorganic binder, and the silicoaluminophosphate particles have a ratio of an amount of Si to a sum of amounts of Al and P in a range of 0.16 to 0.33, a specific surface area in a range of 200 m 2 /g to 400 m 2 /g, and an average diameter of original silicoaluminophosphate particles in a range of 2.0 µm to 6.0 µm.