ABSTRACT
Air pollution is constantly aggravating all over the world, and as legislations on Nitrogen oxides (NOx) are progressively more stringent many research efforts are pursuing remediation methods to effectively handle them. Selective catalytic reduction (SCR) clearly showed as still the most promising NOx removal technique in diesel-fueled vehicles. In the most recent years, significant advancements have been realized in the design of urea-SCR systems for automotive applications. The main challenges still influencing this technology being the urea injection temperature control, reaction yield control and the design of the catalyst. This is why efforts in this research topic still need to be addressed.
