Catalytic Oxidizer Airflow Catalytic Oxidizers from The CMM Group are designed to destroy air pollutants emitted from process exhaust streams at temperatures ranging from 260 degrees C (500 degrees F) to 345 degrees C (650 degrees F). Catalytic oxidizers utilize a high-efficiency counter-flow plate type heat exchanger. Oxidation is achieved as pollutants pass through a heated bed of precious metal catalyst.