低温 NH³ -SCＲ 技术能在低于 200℃的反应温度下将 NOx 高效转化为 N₂ ，具有较好的经济效益和应用前景． 开发高活性、高抗中毒的低温 SCR 脱硝催化剂已成为当前国内外环境领域的研究热点． 硫中毒和水抑制是阻碍低温 SCR 脱硝催化剂发展和应用的关键因素． 分子筛具有优良的吸附性能、适宜的表面酸性、择形性以及灵活性，可有效地引入过渡金属元素，在低温 SCR 领域有很好的应用前景． 文中综述了近年来分子筛应用于低温 NH₃ -SCR 脱硝催化剂的研究成果，重点关注 ZSM-5、SAPO-34、SBA-15、MCM-41 以及BETA 分子筛，分析了其低温选择性催化还原性能、抗硫抗水性能以及反应机理，并对计算模拟在分子筛催化剂设计中的应用进行了介绍． 最后，针对分子筛应用于低温 NH₃ -SCR 所存在的问题，指出了今后研究的方向．

Low-temperature NH₃ -SCR is an efficient technology with high economic value and broad application prospect for transforming NO_x into N₂ below 200 ℃． Great attention has been paid worldwide to develop low-temperature SCr denitration catalysts with high activity and strong resistance to sulfur dioxide and water，which is also crucial for the development and application of low-temperature SCr technologies． Molecular sieves are of ex-cellent adsorption performance，suitable surface acidity，good shape selectivity and flexibility，as well as the capa-bility of introducing transition metal elements． This paper reviews the research progress of molecular sieves used in denitration catalysts for low-temperature NH₃ -SCR，and emphasizes the low-temperature selective catalytic reduction performance，the sulfur dioxide and water resistance，as well as the reaction mechanism of ZSM-5，SAPO-34，SBA-15，MCM-41 and beta molecular sieve． Moreover，the application of calculating simulation to the design of molecular sieve catalysts is introduced，some problems existing in the application of molecular sieves to low-tempe-rature NH₃-SCR are analyzed，and the future research trend is also pointed out．