选择性脱硝催化剂研究进展

选择性催化还原(SCR)技术是国内外应用最成熟的烟气脱硝技术之一,该技术具有脱硝效率高(70%～90%)、选择性好、不造成二次污染等优点。本文从SCR脱硝反应机理、催化剂种类(金属脱硝催化剂、金属氧化物脱硝催化剂、碳基脱硝催化剂、分子筛脱硝催化剂)等多方面详细介绍了高温及其低温SCR脱硝催化剂的研究进展,并展望了脱硝行业的发展前景。

Selective catalytic reduction(SCR)catalysts are widely used for denitration from the f lue gas at home and abroad,which have lots of advantages,such as high denitration eff iciency(70%~90%),extra selectivity and little secondary pollution and so on.In this paper,the SCR denitration catalysts at high or low temperature were introduced in detail including the reaction mechanism,types of the catalysts(metals De-NOx catalysts,metal oxide De-NOx catalysts,carbon-based De-NOx catalysts,molecular sieve De-NOx catalysts),and the research progress of the catalysts.At last it was predicted the denitrif ication industry development prospects.