Patent ID: 8409519
Filing Date: 2013-04-02
Classification: B01D,B01J,F01N,Y02A,Y02T,Y10T

Abstract:
1. An exhaust-gas converting filter comprising: a wall-flow structure filer substrate having inlet-side cells being mesh plugged on the exhaust-gas downstream side, outlet-side cells neighboring the inlet-side cells and being mesh plugged on the exhaust-gas upstream side, and porous cellular partition walls demarcating the inlet-side cells and the outlet-side cells and having a large number of pores; an inlet-side catalytic layer being formed on a surface on a side of the inlet-side cells of the cellular partition walls; an outlet-side catalytic layer being formed on a surface on a side of the outlet-side cells of the cellular partition walls; and pore catalytic layer being formed on the pores within the cellular partition walls; the exhaust-gas converting filter being characterized in that: a noble metal is included in the outlet-side catalytic layer in a concentration that is a noble-metal concentration in the inlet-side catalytic layer or more; and an NO