To provide an exhaust emission control device and an exhaust emission control method for a thermal engine eliminating NOx in exhaust gas in an oxygen excess atmosphere with high elimination performance using CO, and to provide an NOx elimination catalyst used for the same.
The exhaust emission control device for the thermal engine equipped with the NOx elimination catalyst reducing and eliminating nitrogen oxides (NOx) in exhaust gas using CO as reducer is disposed in an exhaust gas channel of the thermal engine discharging exhaust gas in an atmosphere containing CO and NOx and oxygen excessive from stoichiometric quantity. The NOx elimination catalyst includes a porous carrier and catalyst activating component carried on the porous carrier, and includes NOx elimination function by containing Ir and at least one kind selected from Au, Rh and Pd as the catalyst activating component.
COPYRIGHT: (C)2010,JPO&INPIT
IIZUKA HIDEHIRO
NAGAYAMA TOSHIAKI
SATO DAIKI
KATO YASUYOSHI
IMADA NAOMI
FUJISAWA MASATOSHI
| JPH08238430A | 1996-09-17 | |||
| JP2007175654A | 2007-07-12 | |||
| JPH0810575A | 1996-01-16 | |||
| JPH03229620A | 1991-10-11 | |||
| JPH11200844A | 1999-07-27 | |||
| JP2009041454A | 2009-02-26 |
Yuji Toda