A catalytic converter reduces the amount of carbon monoxide, hydrocarbons, and nitrogen oxides that your car emits. These chemicals are created as part of the engine’s combustion process and can be very dangerous to humans and the environment.
Catalytic converters use a catalyst to initiate a chemical reaction that turns these harmful chemicals into harmless ones. The catalyst is a ceramic structure that is coated with platinum, rhodium, or palladium. As the exhaust gases flow into this structure, the metal reacts with the chemicals, creating the less toxic wastes of carbon dioxide, water, and nitrogen, which are expelled out of the car.