Every year, power plants and industrial boilers release millions of tonnes of nitrogen oxides into the atmosphere, feeding ...

Selective catalytic reduction (SCR) systems employing a urea-water solution inject a measured dose of aqueous urea into exhaust gases, where thermal decomposition and hydrolysis generate ammonia. This ...

Selective catalytic reduction (SCR) constitutes a keystone technology for the abatement of nitrogen oxides (NOₓ) in industrial and vehicular emissions. At its core, SCR employs a catalyst—typically a ...

Pollutants emitted from combustion sources have been regulated by local and federal governments since the early 1960s. Specific rules vary by state and air district, but they generally apply to ...

The process that can convert pollution into benign by-products is called selective catalytic reduction, or SCR. Until now, it has been unclear how this reaction actually occurs, and contradictions ...