Efficiency Of Zeolite Mcm-22 With Different Sio2/al 2o3 Molar Ratios In Gas Phase Glycerol Dehydration To Acrolein

dc.creatorCarrico C.S.
dc.creatorCruz F.T.
dc.creatorSantos M.B.
dc.creatorPastore H.O.
dc.creatorAndrade H.M.C.
dc.creatorMascarenhas A.J.S.
dc.date2013
dc.date2015-06-25T19:18:36Z
dc.date2015-11-26T15:16:33Z
dc.date2015-06-25T19:18:36Z
dc.date2015-11-26T15:16:33Z
dc.date.accessioned2018-03-28T22:26:24Z
dc.date.available2018-03-28T22:26:24Z
dc.identifier
dc.identifierMicroporous And Mesoporous Materials. , v. 181, n. , p. 74 - 82, 2013.
dc.identifier13871811
dc.identifier10.1016/j.micromeso.2013.07.020
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84881244914&partnerID=40&md5=1597a36b7535d30951f83465032f1660
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/89774
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/89774
dc.identifier2-s2.0-84881244914
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1259281
dc.descriptionThe gas-phase dehydration of glycerol was conducted over MCM-22 zeolite with different SiO2/Al2O3 molar ratios. MCM-22 zeolites were synthesized and characterized by XRD, FTIR, TG, SEM, EDX, textural analysis by N2 physisorption and NH3-TPD. The MCM-22 zeolites have presented good crystallinity, high surface areas and a decreased amount of acid sites and strength with increasing SiO2/Al 2O3 ratio was observed. The glycerol conversion and acrolein selectivity increased with increasing reaction temperature from 280 C to 320 C on MCM-22 (30) catalyst. As long as the concentration of glycerol solution was in the range from 10% to 36.6%, there was no noticeable difference in the glycerol conversion but the acrolein yield increased with water amount in the feed. The glycerol conversion and selectivity to acrolein at 320 C using glycerol feed of 36.6% during 10 h of reaction decreased in the following order: MCM-22 (30) > MCM-22 (50) > MCM-22 (80). This result shows that glycerol dehydration to acrolein is strongly dependent on the acid sites density and external surface area of the zeolite MCM-22. © 2013 Elsevier Inc. All rights reserved.
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dc.description74
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dc.languageen
dc.publisher
dc.relationMicroporous and Mesoporous Materials
dc.rightsfechado
dc.sourceScopus
dc.titleEfficiency Of Zeolite Mcm-22 With Different Sio2/al 2o3 Molar Ratios In Gas Phase Glycerol Dehydration To Acrolein
dc.typeArtículos de revistas


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