CERAMIC HONEYCOMB CATALYST FOR EXHAUST GAS CLEANING APPARATUS AND EXHAUST GAS CLEANING APPARATUS

摘要

PROBLEM TO BE SOLVED: To obtain a ceramic honeycomb catalyst for an exhaust gas cleaning apparatus for cleaning the exhaust gas from a diesel engine, whose catalyst-deposited amount per the unit volume can be increased and which is made compact and has high cleaning efficiency.

SOLUTION: This ceramic honeycomb catalyst is obtained by depositing a catalytic substance on a ceramic honeycomb structure having an outer peripheral wall and many circulation pores divided inside the outer peripheral wall by partitions in the axial direction. The average pore size of the partitions of the ceramic honeycomb structure is made to be ≥15 μm and the porosity is made to be 50-80%.

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