Research progress on high-temperature flue gas denitrification catalysts
NH3 selective catalytic reduction(SCR)technology is a widely used method for eliminating nitrogen oxides(NOx)from industrial emissions.The flue gas temperature emitted from large gas turbines,ships and diesel vehicles is often higher than 450℃,which requires catalysts with good catalytic activity,selectivity and stability under high temperature,so the development of high-temperature SCR catalysts is a challenging issue in the field of denitrification.The current research status of molecular sieve catalysts(Cu-based molecular sieve and Fe-based molecular sieve)and metal oxide catalysts under high-tempera-ture catalytic denitrification conditions is reviewed,the catalytic performance and physicochemical charac-teristics of high-temperature SCR catalysts are analysed,and the key factors affecting the catalytic perf-ormance of high-temperature SCR catalysts are proposed.The challenges of current high-temperature SCR denitrification technology are summarised,while the future development direction is prospected.
万方数据
维普
