Conventional and New Materials for Selective Catalytic Reduction (SCR) of NOx

It is important and necessary to minimize NO x pollutant released into the atmosphere owing to the harmful environmental and health effects brought by NO x emission. Many techniques are available to reduce NO x emission, among of them, Selective Catalytic Reduction (SCR) is considered as one of the most efficient techniques. Conventional SCR systems involve ammonia (NH 3 ) or urea (CO(NH 2 ) 2 ) as a reducing reagent to reduce NO x to N 2 and H 2 O at high temperatures 300–400 °C. Research on developing novel low‐temperature catalysts (LTC) for SCR of NO x still remains of interest. This work reviewed and compared conventional SCR catalysts with newly emerging Metal‐Organic‐Frame (MOFs) materials as potential alternatives for SCR catalysts.