Abstract: Selective catalytic reduction (SCR) has been the mainstream technology to control emissions of NOx. This tecnology has numbers of advantages，such as extrodinary selectivity， high denitration and no secondary pollution. In this paper，the research progress of SCR and the catalysts was presented. The vanadium-titanium catalysts，noble metal catalysts，metal oxide catalysts and zeolite molecular were focused. The situation of the industrialization of the De-NOx catalyst and the main factors of catalysts was analyzed. Finally the development of De-NOx catalyst should be to improve the catalyst life，product the new catalysts (especially the mixed metal oxide catalysts and the new vanadiumt-based catalysts) and new technology direction.

Key words: flue gas denitration, selective catalytic reduction (SCR), NOx, catalyst, industrialization

摘要： 选择性催化还原（SCR）是目前控制氮氧化物排放的主要技术，该技术具有选择性好、脱硝效率高、不造成二次污染等优点。本文对SCR技术及其催化剂进行了综述，重点介绍了钒钛催化剂、贵金属催化剂、金属氧化物催化剂及沸石分子筛型催化剂的研究进展，并对国内外脱硝催化剂的工业化现状及催化剂的影响因素进行了分析，最后指出我国脱硝催化剂的发展应以提高催化剂寿命、开发新型催化剂（以复合金属氧化物催化剂和新型钒基催化剂为主）及新工艺为方向进行。

关键词: 脱硝；选择性催化还原；氮氧化物；催化剂, 工业化