What are the Key Processes in Catalytic Emission Control?
Several catalytic processes are crucial for emission control, including:
Selective Catalytic Reduction (SCR): This process reduces NOx emissions from industrial sources by using ammonia or urea as a reducing agent in the presence of a catalyst. Three-way Catalysis (TWC): Used in automotive catalytic converters, TWC simultaneously reduces NOx, oxidizes CO, and oxidizes unburned hydrocarbons. Diesel Oxidation Catalysts (DOC): These are used in diesel engines to oxidize CO and hydrocarbons into CO2 and H2O.
