Patent ID: 8227368

Claim:
A honeycomb structure comprising: honeycomb units each having a longitudinal direction and comprising: inorganic particles including zeolite; an inorganic binder; and cell walls defining cells extending along the longitudinal direction from one end face to another end face, the honeycomb units being bonded together via an adhesive such that each longitudinal direction is substantially in parallel, wherein a content of the zeolite per liter of apparent volume of the honeycomb units is from about 250 g to about 700 g; an amount of ammonia desorbed per unit mass of the honeycomb units measured by an NH 3 -TPD method is from about 200 μmol/g to about 700 μmol/g; and the amount of ammonia desorbed per unit mass of the honeycomb units is about 5 to about 100 times greater than an amount of ammonia desorbed per unit mass of the adhesive measured by the NH 3 -TPD method.