综述了NH₃-SCR脱硝催化反应机理及近年来文献报道的脱硝催化剂体系（V、Mn、Ce基等过渡金属氧化物和复合氧化物催化剂，Fe、Cu离子交换型分子筛催化剂），并对各种催化剂的优势和不足进行分析评述。虽然目前催化剂体系众多，但催化剂宽裕的高活性操作温窗、高温水热稳定性和耐毒性仍有待提高。最后指出，开发新型催化剂、改善催化剂的高温水热稳定性、提升抗中毒能力和绿色合成是未来NH₃-SCR脱硝催化剂研究的重要方向。

The reaction mechanism of NH₃-SCR is reviewed,and the recently reported catalyst systems are introduced,such as V-,Mn-,Ce-based transition metal oxide or composite oxide catalysts,Fe-zeolite catalysts and Cu-zeolite catalysts.The advantages and drawbacks of various kinds of catalysts are analyzed.Although there are many kinds of catalyst systems developed for NH₃-SCR,some performances of the catalysts like wide operating temperature window,great hydrothermal stability and outstanding resistance to poisoning need to be improved.In the future,it is suggested for NH₃-SCR to develop new types of catalysts,improve hydrothermal stability of the catalysts at high temperature,enhance catalysts' resistance to poisoning and develop "green" synthesis process.

戴豪波(1972-),男,硕士,高级工程师,研究方向为能源环保,daihaobo@126.com