Catalyst arrangement and method of purifying the exhaust gas of internal combustion engines operated under lean conditions

The catalytic device for waste gas the invention relates is used to by the internal combustion working condition online that the internal combustion engine according with. The invention claims a coating cloth of thin-wall porous at one side of the nitrogen oxide catalyst storing, coating BASED catalyst and other side. When the waste gas through the catalyzed the coating and carrier material, a on the back plate is connected with the adjusting the catalyst to boss, the invention an remarkable the reinforcing a nitrogen oxide variable rate. With discovered of the rounding wall through the filter is a to serve as to the thin-walled carrier.