Synthesis and modification of beta zeolite for use in toluene disproportionation reaction

In 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 s...

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Autores:
Mesa Espinal, Santiago
Arboleda, Johana
Echavarría, Adriana
Tipo de recurso:
Article of journal
Fecha de publicación:
2016
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/60562
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/60562
http://bdigital.unal.edu.co/58894/
Palabra clave:
62 Ingeniería y operaciones afines / Engineering
Beta zeolita
Surface Passivation
Catalysis
Toluene Disproportionation
Para-selectivity
Rights
openAccess
License
Atribución-NoComercial 4.0 Internacional
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spelling Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Mesa Espinal, Santiago832c97c8-d573-4658-a050-62a1167e6b98300Arboleda, Johana0f3743e3-b14d-4c50-a514-90c065e9c153300Echavarría, Adriana1fca1218-3112-4127-bdec-dec63556d7e73002019-07-02T18:36:18Z2019-07-02T18:36:18Z2016-03-01ISSN: 2346-2183https://repositorio.unal.edu.co/handle/unal/60562http://bdigital.unal.edu.co/58894/In 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.application/pdfspaUniversidad Nacional de Colombia (Sede Medellín). Facultad de Minas.https://revistas.unal.edu.co/index.php/dyna/article/view/51933Universidad Nacional de Colombia Revistas electrónicas UN DynaDynaMesa 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 2346-218362 Ingeniería y operaciones afines / EngineeringBeta zeolitaSurface PassivationCatalysisToluene DisproportionationPara-selectivitySynthesis and modification of beta zeolite for use in toluene disproportionation reactionArtículo de revistainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1http://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/ARTORIGINAL51933-290188-1-PB.pdfapplication/pdf1781479https://repositorio.unal.edu.co/bitstream/unal/60562/1/51933-290188-1-PB.pdfa46c7709373063baebf8f050ffa8ddb5MD51THUMBNAIL51933-290188-1-PB.pdf.jpg51933-290188-1-PB.pdf.jpgGenerated Thumbnailimage/jpeg9097https://repositorio.unal.edu.co/bitstream/unal/60562/2/51933-290188-1-PB.pdf.jpg0dabe7a027a43b9da0b3395059348de4MD52unal/60562oai:repositorio.unal.edu.co:unal/605622024-04-14 23:11:03.468Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co
dc.title.spa.fl_str_mv Synthesis and modification of beta zeolite for use in toluene disproportionation reaction
title Synthesis and modification of beta zeolite for use in toluene disproportionation reaction
spellingShingle Synthesis and modification of beta zeolite for use in toluene disproportionation reaction
62 Ingeniería y operaciones afines / Engineering
Beta zeolita
Surface Passivation
Catalysis
Toluene Disproportionation
Para-selectivity
title_short Synthesis and modification of beta zeolite for use in toluene disproportionation reaction
title_full Synthesis and modification of beta zeolite for use in toluene disproportionation reaction
title_fullStr Synthesis and modification of beta zeolite for use in toluene disproportionation reaction
title_full_unstemmed Synthesis and modification of beta zeolite for use in toluene disproportionation reaction
title_sort Synthesis and modification of beta zeolite for use in toluene disproportionation reaction
dc.creator.fl_str_mv Mesa Espinal, Santiago
Arboleda, Johana
Echavarría, Adriana
dc.contributor.author.spa.fl_str_mv Mesa Espinal, Santiago
Arboleda, Johana
Echavarría, Adriana
dc.subject.ddc.spa.fl_str_mv 62 Ingeniería y operaciones afines / Engineering
topic 62 Ingeniería y operaciones afines / Engineering
Beta zeolita
Surface Passivation
Catalysis
Toluene Disproportionation
Para-selectivity
dc.subject.proposal.spa.fl_str_mv Beta zeolita
Surface Passivation
Catalysis
Toluene Disproportionation
Para-selectivity
description In 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.
publishDate 2016
dc.date.issued.spa.fl_str_mv 2016-03-01
dc.date.accessioned.spa.fl_str_mv 2019-07-02T18:36:18Z
dc.date.available.spa.fl_str_mv 2019-07-02T18:36:18Z
dc.type.spa.fl_str_mv Artículo de revista
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dc.identifier.issn.spa.fl_str_mv ISSN: 2346-2183
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identifier_str_mv ISSN: 2346-2183
url https://repositorio.unal.edu.co/handle/unal/60562
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dc.language.iso.spa.fl_str_mv spa
language spa
dc.relation.spa.fl_str_mv https://revistas.unal.edu.co/index.php/dyna/article/view/51933
dc.relation.ispartof.spa.fl_str_mv Universidad Nacional de Colombia Revistas electrónicas UN Dyna
Dyna
dc.relation.references.spa.fl_str_mv Mesa 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.spa.fl_str_mv Derechos reservados - Universidad Nacional de Colombia
dc.rights.coar.fl_str_mv http://purl.org/coar/access_right/c_abf2
dc.rights.license.spa.fl_str_mv Atribución-NoComercial 4.0 Internacional
dc.rights.uri.spa.fl_str_mv http://creativecommons.org/licenses/by-nc/4.0/
dc.rights.accessrights.spa.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial 4.0 Internacional
Derechos reservados - Universidad Nacional de Colombia
http://creativecommons.org/licenses/by-nc/4.0/
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.mimetype.spa.fl_str_mv application/pdf
dc.publisher.spa.fl_str_mv Universidad Nacional de Colombia (Sede Medellín). Facultad de Minas.
institution Universidad Nacional de Colombia
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