What does a catalytic converter turn nitrogen oxide into?

A catalytic converter reduces nitrogen oxides (NOx) into nitrogen (N₂) and oxygen (O₂) through a chemical reaction facilitated by catalysts, typically made of precious metals like platinum, palladium, and rhodium. This process occurs during the exhaust emissions treatment in vehicles, helping to decrease harmful pollutants released into the atmosphere. The conversion is essential for meeting environmental regulations and improving air quality.