Monolithic catalyst, to clean exhaust gases from an IC motor, has a carrier with parallel flow channels coated with a noble metal only at the section towards the inflow

摘要

#CMT# #/CMT# The monolithic catalyst (1), to clean exhaust gases from an internal combustion motor, has a ceramic or metal carrier with parallel flow channels (2) through it between an inflow (4) and an outflow (5). The carrier section (6) towards the inflow is coated with a noble metal with a thickness of 10-30 mu m, and the section (7) away from the inflow carries no noble metal. The leading carrier section comprises 20-60 vol.% of the total carrier. #CMT#USE : #/CMT# The catalyst is for cleaning exhaust gases from an internal combustion motor. #CMT#ADVANTAGE : #/CMT# The structure requires a lower noble metal content, giving reduced production costs. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of the monolithic catalyst. 1 : catalyst 2 : flow channels 3 : carrier 4 : inflow 5 : outflow 6 : carrier section towards the inflow 7 : carrier section away from the inflow #CMT#METALLURGY : #/CMT# The noble metal coating is of platinum and/or palladium and/or rhodium.