HONEYCOMB BASE MATERIAL FOR EXHAUST EMISSION PURIFYING CATALYST, EXHAUST EMISSION PURIFYING CATALYST, AND MANUFACTURING METHOD OF EXHAUST EMISSION PURIFYING CATALYST

摘要

PROBLEM TO BE SOLVED: To provide a honeycomb base material for an exhaust emission purifying catalyst enabling the warming performance of the catalyst to be good, the exhaust emission purifying catalyst having good warming performance of the catalyst, and its manufacturing method.;SOLUTION: The exhaust emission purifying catalyst 100 has the honeycomb base material 110 and a catalyst layer 120. The honeycomb base material 110 comprises ceramics (cordierite), partitions a plurality of cells 114 penetrating through between one end surface 111 and the other end surface 112 by cell partition walls 113. Of these partition walls 113, a cell partition wall branching part 113b branching in the direction orthogonal to the ventilation direction (direction along the axial line D) has a closed hole 115 extending in the ventilation direction and having the other end face 112 side closed. The catalyst layer 120 is not formed on the surface of the closed hole 115 side of the cell partition wall branching part 113b, but formed on the surface 113c on the cell 114 side of the cell partition wall 113.;COPYRIGHT: (C)2006,JPO&NCIPI