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dc.rights.licenseAtribución-NoComercial 4.0 Internacional
dc.contributor.authorMesa Espinal, Santiago
dc.contributor.authorArboleda, Johana
dc.contributor.authorEchavarría, Adriana
dc.date.accessioned2019-07-02T18:36:18Z
dc.date.available2019-07-02T18:36:18Z
dc.date.issued2016-03-01
dc.identifier.issnISSN: 2346-2183
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/60562
dc.description.abstractIn this paper zeolite Beta was synthesized and characterized by XRD, ATG, ATD, XRF and SEM. Subsequently various modifications were made using a surface passivation process in liquid phase with tetraethylorthosilicate (TEOS), using two loads of TEOS and three passivation cycles, in order to obtain six catalysts. These materials were characterized by NH3-TPD and tested in tolune disproportionation reaction, under different conditions of pressure and temperature. As modification cycles were increased for each catalyst, there was a change in the acidity of the solids, mainly due to deposition of an inert layer of silica on the external surface. These results were confirmed with the improvement in para-selectivity and decreasing in conversion. Despite zeolite Beta is a large pore zeolite, an improvement of the para-selectivity was obtained, achieving almost stable values for the entire range of temperature and pressure conditions.
dc.format.mimetypeapplication/pdf
dc.language.isospa
dc.publisherUniversidad Nacional de Colombia (Sede Medellín). Facultad de Minas.
dc.relationhttps://revistas.unal.edu.co/index.php/dyna/article/view/51933
dc.relation.ispartofUniversidad Nacional de Colombia Revistas electrónicas UN Dyna
dc.relation.ispartofDyna
dc.rightsDerechos reservados - Universidad Nacional de Colombia
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.subject.ddc62 Ingeniería y operaciones afines / Engineering
dc.titleSynthesis and modification of beta zeolite for use in toluene disproportionation reaction
dc.typeArtículo de revista
dc.type.driverinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.eprintshttp://bdigital.unal.edu.co/58894/
dc.relation.referencesMesa Espinal, Santiago and Arboleda, Johana and Echavarría, Adriana (2016) Synthesis and modification of beta zeolite for use in toluene disproportionation reaction. DYNA, 83 (196). pp. 184-193. ISSN 2346-2183
dc.rights.accessrightsinfo:eu-repo/semantics/openAccess
dc.subject.proposalBeta zeolita
dc.subject.proposalSurface Passivation
dc.subject.proposalCatalysis
dc.subject.proposalToluene Disproportionation
dc.subject.proposalPara-selectivity
dc.type.coarhttp://purl.org/coar/resource_type/c_6501
dc.type.coarversionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.contentText
dc.type.redcolhttp://purl.org/redcol/resource_type/ART
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2


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Atribución-NoComercial 4.0 InternacionalThis work is licensed under a Creative Commons Reconocimiento-NoComercial 4.0.This document has been deposited by the author (s) under the following certificate of deposit