DEA/TEAOH templated synthesis and characterization of nanostructured NiAPSO-34 particles ：Effect of single and mixed templates on catalyst properties and performance in the methanol to olefin reaction-中国Betway体育网页登陆

摘要 AnanostructuredNiAPSO-34catalystwashydrothermallysynthesizedandtheeffectofthetemplate（diethylamine（DEA）,tetraethylammoniumhydroxide（TEAOH）andDEA/TEAOH）onthephysicochemicalpropertiesandcatalyticperformanceinthemethanoltoolefin（MTO）reactionwasinvestigated.ThesampleswerecharacterizedbyX-raydiffraction,fieldemissionscanningelectronmicroscopy（FESEM）,particlesizedistributionanalysis,energy-dispersiveX-rayspectroscopy,Brunauer-Emmett-TelleranalysisandFouriertransforminfraredspectroscopy.TheX-raydiffractionpatternsindicatedahighercrystallinityandlargercrystallitesizeforthecatalystsynthesizedusingtheDEAtemplate.TheFESEMresultsindicatedthatthenatureofthetemplatecouldaffectthemorphologyofthenanostructuredNiAPSO-34catalystbecauseofitseffectontherateofcrystalgrowth.ThecatalyticperformanceofthesampleswasstudiedintheMTOreactionatatmosphericpressureandaspacevelocityof4200cm3/(gh-1)inafixedbedreactor.ThestabilityandactivityoftheNiAPSO-34catalystwereimprovedusingtheDEAtemplatebecauseofitshighercrystallinity,surfaceareaandthegreaterextentofNiincorporationintoitsframework.ThepossiblestagesofsynthesisandthereactionmechanismfortheMTOprocessoverNiAPSO-34arediscussedindetail.

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DEA/TEAOH templated synthesis and characterization of nanostructured NiAPSO-34 particles ：Effect of single and mixed templates on catalyst properties and performance in the methanol to olefin reaction

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