超低温氨气选择性脱硝催化剂的研究进展

This review examines the current development in selective catalytic reduction (SCR) for denitrification (de-NO_x), and introduces the unique advantages of ultra-low temperature SCR in terms of energy savings, cost reduction, mitigation of dust and anti SO₂ poisoning. It further summarizes the types of ultra-low temperature SCR catalysts, their structural characteristics, and the main challenges in applications, such as low de-NO_x activity, poor H₂O tolerance, and insufficient stability. Additionally, this review outlines the research progress in H₂O and SO₂ poisoning resistance of ultra-low temperature SCR catalysts. Finally, it proposes future development directions for ultra-low temperature SCR catalysts, emphasizing the need for in-depth research to enhance catalyst activity, improve H₂O and SO₂ tolerance, increase catalyst production, and understand the reaction mechanisms. In conclusion, ultra-low temperature ammonia SCR catalysts offer significant environmental and economic benefits, with broad application prospects in the field of air pollution control.