Recent studies suggest that microwave energy can be employed in catalysis a
nd that the results differ from "conventional" heating. The influence of mi
crowave energy on automotive exhaust catalysis in the presence and absence
of a catalyst poison (SO2) was studied. The conclusion is that microwave en
ergy can induce carbon monoxide (CO) lightoff (the temperature where 50% of
final conversion is achieved) more efficiently than conventional heating a
nd can reverse the poisoning by SO2 for a commercial three-way catalyst.