Research Progress on Metal Oxides for the Selective Catalytic Reduction of NOx with Ammonia

Nitrogen oxides emitted from diesel vehicle exhaust seriously endanger the atmospheric environment and human health, which have attracted people’s attention. Among numerous nitrogen oxide (NOx) removal technologies, photocatalytic of NOx SCR received widespread The treatment technology is a good choice due to its mild reaction conditions low costs. Moreover, NH3-SCR has been widely used in denitration plays an important role controlling emissions. In technology, development high-efficiency catalysts part. This paper summarizes research progress metal for reactions, including V-based catalysts, Mn-based Fe-based Ce-based Cu-based catalysts. Meanwhile, detailed process was also introduced. addition, this describes possible SO2 poisoning mechanism stability Finally, problems prospects were proposed.