ByZongHe

    Recently,theresearchteamledbyprofessorTangXingfuofthe Environmental Science andEngineeringDepartmentofFudanUniversitydevelopedanewdeni⁃tration catalyst which resistsbothalkalimetalandSO2.Thenew technology can effectivelycontrol the emission of NOx,precusorofPM2.5,thusplayinganimportantroleinreducingthesecondary  particle  pollutantstransformedbyNOxinair.TherelevantachievementshavebeenpublishedinthemagazinecalledEnvironmentalScienceandTech⁃nologywithHuangZhiwei,aPh.D. studentofFudanUniversity,asthefirstauthor.

    Mr.TangsaidthattheprocessofcontrollingtheemissionofNOxisexactlydenitration,i.e.thepro⁃

    cessoftransformingtheharmfulNOxintoinnocuousandharmlessnitrogen.Theproductionofthecatalystiscriticaltotheprocess.AlkalimetalandSO2insmokyen⁃vironment are two majortoxicsubstancesagainstSCRcatalyst,theactivesitesofwhichonceareoccupiedbythetwosubstances,theSCRreactionwillbecutoffandthecatalystwillreactasifbe⁃ingpoisoned,losingactivityandfunctions.

    ThenewdenitrationcatalystdevelopedbytheresearchteamledbyMr. Tang cannot onlyresistalkalimetalandSO2,butalso exist morethan 10timeslongerthantraditionalcatalysts.Thetechnologycanbeexten⁃sivelyusedtocontroltheemis⁃sionofNOXfromthermalpowerplants,factoriesofheavyindus⁃tryandvehicles.