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Zeolite Beta membranes for the separation of hexane isomers

2010Journal article Open access
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dc.contributor.authorBárcia, Patrick da Silva
dc.contributor.authorSilva, José A.C.
dc.contributor.authorGascon, Jorge
dc.contributor.authorAguado, Sónia
dc.contributor.authorFerreira, Alexandre
dc.contributor.authorRodrigues, Alírio
dc.contributor.authorKapteijn, Freek
dc.date.accessioned2011-02-04T10:54:11Z
dc.date.available2011-02-04T10:54:11Z
dc.date.issued2010
dc.description.abstractThe preparation of a-alumina supported zeolite Beta membranes was successfully achieved and sped up by exploring combinations of three seeding techniques and three synthetic methods. The surface of the membranes was completely covered by well intergrown crystals; the thickness of the zeolite layers ranged from 2 to 6 lm depending on the synthesis method used. The quality of the membranes was tested by means of pervaporation of ethanol/1,3,5-triisopropylbenzene (TIPB) mixtures together with permporometry experiments. The performance in the vapour separation of quaternary equimolar mixtures of nhexane (nHEX), 3-methylpentane (3MP), 2,3-dimethylbutane (23DMB) and 2,2-dimethylbutane (22DMB) in the range 343–443 K showed that permeate flux decreases as the branching degree increases following the order: nHEX 3MP > 23DMB > 22DMB. In the retentate, the fractions of monobranched and normal hexane decrease while the concentration of dibranched isomers is increased compared to the feed composition. The influence of the temperature in the permeation fluxes indicates the existence of an activated transport mechanism which favours the permeation of more nHEX and 3MP with regard to their dibranched isomers. The octane number (ON) of the quaternary mixture was enhanced up to 5 points with the best synthesized membrane.
dc.identifier.citationBárcia, Patrick; Silva, Jose A. C.; Gascon, Jorge; Aguado, Sonia; Ferreira, Alexandre; Rodrigues, Alirio; Kapteijn, Freek (2010). Zeolite Beta membranes for the separation of hexane isomers. Microporous and Mesoporous Materials. ISSN 1387-1811. 128:1-3, p.194-202.
dc.identifier.doi10.1016/j.micromeso.2009.08.023
dc.identifier.issn1387-1811
dc.identifier.urihttp://hdl.handle.net/10198/3256
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.relationZeolite Membrane Based Total Isomerization Process for Upgrading the Octane Gasoline Feedstock
dc.titleZeolite Beta membranes for the separation of hexane isomerspor
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleZeolite Membrane Based Total Isomerization Process for Upgrading the Octane Gasoline Feedstock
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F30994%2F2006/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FEQU-EQU%2F69731%2F2006/PT
oaire.citation.endPage202por
oaire.citation.issue128por
oaire.citation.startPage194por
oaire.citation.titleMicroporous and Mesoporous Materialspor
oaire.fundingStreamSFRH
oaire.fundingStream5876-PPCDTI
person.familyNameSilva
person.givenNameJosé A.C.
person.identifier.ciencia-idC11B-F5CF-7C78
person.identifier.orcid0000-0003-1778-3833
person.identifier.scopus-author-id7403023684
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication16366ede-a7d6-45ff-a8c9-eff9bdde35c7
relation.isAuthorOfPublication.latestForDiscovery16366ede-a7d6-45ff-a8c9-eff9bdde35c7
relation.isProjectOfPublicationd3d688c4-3c59-402c-9a0a-6d96a42bb1d6
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