What is NOx?

NOx refers to a mixture of nitrogen oxides, primarily nitric oxide (NO) and nitrogen dioxide (NO2). These gases are produced during the combustion of fossil fuels, such as in vehicle engines and power plants. NOx is a major air pollutant that contributes to smog, acid rain, and respiratory problems. Technologies and strategies are employed to reduce NOx emissions, including catalytic converters in vehicles, selective catalytic reduction (SCR) in industrial settings, and adjustments to combustion processes to lower peak temperatures and oxygen availability.