additives was used todevelop novel iron·-basedlow··temperature SCR catalysts with highefficiency inthiswork.Then theinfluence oftitrationmethod and calcination temperature on theSCR performance ofcatalysts atlow temperatures was revealed, and the optimization mechanism ofmicrowave drying over thecatalysts was also investigated. 1.Different additives were utilized tomodify thelow-temperature SCR activity ofT-Fe203 catalysts.The resultsindicated Mn was the bestadditive toimprove the low--temperature SCR activity of7·-Fe203catalysts and itsoptimum doping ratiowas 0.3.Itshowed thatthedoping ofMn significantly increased thelow—temperature SCR activity and widened theactivity temperature window of7-Fe203 catalysts.The highest NOx conversion of Fe0.7Mn0.30:catalysts was 00%,which was 75 III 万方数据
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