Effect of Mischmetal Addition on Catalytic Performance of PtSnNa/ZSM-5 for Propane Dehydrogenation-中国Betway体育网页登陆

摘要 TheinfluenceofmischmetaladditiononphysicochemicalpropertiesofPtSnNa/ZSM-5catalystwasstudiedbymeansofXRF,H2chemisorption,XRD,TPR,NH3-TPDandTPOtechniques.TheresultsshowedthatthepresenceofmischmetalhadanobviousimpactonthecatalyticperformanceofthePtSnNa/ZSM-5catalyst.AsuitablecontentofmischmetalnotonlycouldenhancetheinteractionsbetweenPtspeciesandthesupport,butalsoinhibittheformationofcokeduringthereaction,thusimprovingthecatalyticactivityandstability.Inourexperiments,whenthecontentofmischmetalwas3m%,thecatalystexhibitedbestcatalyticperformance.However,thecontinuousadditionofmischmetalcouldpromotethereductionofSnspeciestometallictin,whichwasdisadvantageoustothereaction.

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Effect of Mischmetal Addition on Catalytic Performance of PtSnNa/ZSM-5 for Propane Dehydrogenation

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