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OALib Journal期刊
ISSN: 2333-9721
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Cyanoethylationofalcoholsandaminesbycesium-modifiedzeoliteY
DOI: 10.1016/S1872-2067(12)60751-7, PP. 264-269
Keywords: ModifiedYzeolite,Basiccatalyst,Cyanoethylation,Nano-particle
Abstract:
？ZeoliteYmodifiedbycesiumandmagnesiumionswaspreparedbyion-exchangeandimpregnationmethods,anditsactivityinthecyanoethylationofaliphaticandaromaticalcoholsandamineswasinvestigated.Duringthepreparationofsomesamples,thetransformationofzeoliteYintoapollucite-typephaseoccurred.Thisphaseexhibitedgoodactivityinthecyanoethylationofaliphaticalcohols.Thepreparedsolidsmodifiedbytheimpregnationmethodweremoreactivethantheion-exchangedsolids.Theactivitiesofthecatalysts,incontrasttootherbasicsolids,werescarcelyaffectedbythepresenceofairormoisture.Acorrelationbetweencatalystbasicityandcatalyticactivityisdiscussed.ThecatalystswerecharacterizedbyX-raydiffraction,volumetricnitrogenadsorptionsurfaceareameasurement,andCO2temperature-programmeddesorption.Scanningelectronmicroscopyrevealedthattheparticlesofthemodifiednanocatalystswere<40nm.Thereactionofacrylonitrilewithlinearalcoholsinthepresenceofthecatalystswasacceleratedbymicrowaveirradiation.
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