| 摘要 |
Provided is a honeycomb structure which is suppressed in the occurrence of cracks and hydration degradation, while maintaining excellent NOx removal performance of SAPO. A honeycomb structure having a honeycomb unit which contains two kinds of zeolite and an inorganic binder, and in which a plurality of through holes are arranged side by side in the longitudinal direction with a partition wall therebetween. This honeycomb structure is characterized in that one of the two kinds of zeolite is silicoaluminophosphate (SAPO) having a composition ratio Si/(Si + Al + P) of 0.1-0.25, and the other is aluminosilicate (CHA) having a composition ratio Si/Al of 2-10. |
