Effect of hydrogen on the cracking mechanisms of cycloalkanes over zeolites

Autores
Castaño, Pedro; Arandes, José M.; Olazar, Martin; Bilbao, Javier; Pawelec, Bárbara; Sedran, Ulises Anselmo
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Hydrocracking of secondary interest refinery streams (high aromatic content) can yield valuable products for transportation and petrochemical industry. In order to promote the hydrogenation and cracking steps, a bifunctional catalyst (metal + acid function) is required. We have studied the effect of the operating conditions on cycloalkane (product of aromatic hydrogenation) ring opening over a monofunctional HZSM-5 zeolite, by focusing on the effect of hydrogen in the cracking mechanisms. Methylcyclohexane has been selected as the test reactant and the conditions used corresponds to temperature, 250-450 °C; space velocity, 0.7-1.1 h-1; pressure, 2-80 bar; hydrogen/methylcyclohexane molar ratio, 1-79; conversion, 0-100% (integral reactor). At these conditions the zeolite catalyses hydrogenation as well as cracking (bifunctional capabilities), thus the cracking mechanisms are directly affected by hydrogen as products (alkenes) and intermediates (carbenium ions) are saturated. The overall effect of rising hydrogen partial pressure is an enhancement of (hydro)isomerization and monomolecular cracking, that is, an increase of the yield/selectivity of methane, ethane, penthane and isoalkanes.
Fil: Castaño, Pedro. Universidad del País Vasco; España
Fil: Arandes, José M.. Universidad del País Vasco; España
Fil: Olazar, Martin. Universidad del País Vasco; España
Fil: Bilbao, Javier. Universidad del País Vasco; España
Fil: Pawelec, Bárbara. Consejo Superior de Investigaciones Científicas. Instituto de Catálisis y Petroleoquímica; España
Fil: Sedran, Ulises Anselmo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Materia
Cracking
Cycloalkanes
Hzsm-5 Zeolite
Methylcyclohexane
Ring Opening
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/55475
Acceder
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spelling Effect of hydrogen on the cracking mechanisms of cycloalkanes over zeolitesCastaño, PedroArandes, José M.Olazar, MartinBilbao, JavierPawelec, BárbaraSedran, Ulises AnselmoCrackingCycloalkanesHzsm-5 ZeoliteMethylcyclohexaneRing Openinghttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Hydrocracking of secondary interest refinery streams (high aromatic content) can yield valuable products for transportation and petrochemical industry. In order to promote the hydrogenation and cracking steps, a bifunctional catalyst (metal + acid function) is required. We have studied the effect of the operating conditions on cycloalkane (product of aromatic hydrogenation) ring opening over a monofunctional HZSM-5 zeolite, by focusing on the effect of hydrogen in the cracking mechanisms. Methylcyclohexane has been selected as the test reactant and the conditions used corresponds to temperature, 250-450 °C; space velocity, 0.7-1.1 h-1; pressure, 2-80 bar; hydrogen/methylcyclohexane molar ratio, 1-79; conversion, 0-100% (integral reactor). At these conditions the zeolite catalyses hydrogenation as well as cracking (bifunctional capabilities), thus the cracking mechanisms are directly affected by hydrogen as products (alkenes) and intermediates (carbenium ions) are saturated. The overall effect of rising hydrogen partial pressure is an enhancement of (hydro)isomerization and monomolecular cracking, that is, an increase of the yield/selectivity of methane, ethane, penthane and isoalkanes.Fil: Castaño, Pedro. Universidad del País Vasco; EspañaFil: Arandes, José M.. Universidad del País Vasco; EspañaFil: Olazar, Martin. Universidad del País Vasco; EspañaFil: Bilbao, Javier. Universidad del País Vasco; EspañaFil: Pawelec, Bárbara. Consejo Superior de Investigaciones Científicas. Instituto de Catálisis y Petroleoquímica; EspañaFil: Sedran, Ulises Anselmo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; ArgentinaElsevier Science2010-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/55475Castaño, Pedro; Arandes, José M.; Olazar, Martin; Bilbao, Javier; Pawelec, Bárbara; et al.; Effect of hydrogen on the cracking mechanisms of cycloalkanes over zeolites; Elsevier Science; Catalysis Today; 150; 3-4; 3-2010; 363-3670920-5861CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.cattod.2009.09.013info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0920586109006166info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:01:53Zoai:ri.conicet.gov.ar:11336/55475instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:01:53.484CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effect of hydrogen on the cracking mechanisms of cycloalkanes over zeolites
title Effect of hydrogen on the cracking mechanisms of cycloalkanes over zeolites
spellingShingle Effect of hydrogen on the cracking mechanisms of cycloalkanes over zeolites
Castaño, Pedro
Cracking
Cycloalkanes
Hzsm-5 Zeolite
Methylcyclohexane
Ring Opening
title_short Effect of hydrogen on the cracking mechanisms of cycloalkanes over zeolites
title_full Effect of hydrogen on the cracking mechanisms of cycloalkanes over zeolites
title_fullStr Effect of hydrogen on the cracking mechanisms of cycloalkanes over zeolites
title_full_unstemmed Effect of hydrogen on the cracking mechanisms of cycloalkanes over zeolites
title_sort Effect of hydrogen on the cracking mechanisms of cycloalkanes over zeolites
dc.creator.none.fl_str_mv Castaño, Pedro
Arandes, José M.
Olazar, Martin
Bilbao, Javier
Pawelec, Bárbara
Sedran, Ulises Anselmo
author Castaño, Pedro
author_facet Castaño, Pedro
Arandes, José M.
Olazar, Martin
Bilbao, Javier
Pawelec, Bárbara
Sedran, Ulises Anselmo
author_role author
author2 Arandes, José M.
Olazar, Martin
Bilbao, Javier
Pawelec, Bárbara
Sedran, Ulises Anselmo
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Cracking
Cycloalkanes
Hzsm-5 Zeolite
Methylcyclohexane
Ring Opening
topic Cracking
Cycloalkanes
Hzsm-5 Zeolite
Methylcyclohexane
Ring Opening
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Hydrocracking of secondary interest refinery streams (high aromatic content) can yield valuable products for transportation and petrochemical industry. In order to promote the hydrogenation and cracking steps, a bifunctional catalyst (metal + acid function) is required. We have studied the effect of the operating conditions on cycloalkane (product of aromatic hydrogenation) ring opening over a monofunctional HZSM-5 zeolite, by focusing on the effect of hydrogen in the cracking mechanisms. Methylcyclohexane has been selected as the test reactant and the conditions used corresponds to temperature, 250-450 °C; space velocity, 0.7-1.1 h-1; pressure, 2-80 bar; hydrogen/methylcyclohexane molar ratio, 1-79; conversion, 0-100% (integral reactor). At these conditions the zeolite catalyses hydrogenation as well as cracking (bifunctional capabilities), thus the cracking mechanisms are directly affected by hydrogen as products (alkenes) and intermediates (carbenium ions) are saturated. The overall effect of rising hydrogen partial pressure is an enhancement of (hydro)isomerization and monomolecular cracking, that is, an increase of the yield/selectivity of methane, ethane, penthane and isoalkanes.
Fil: Castaño, Pedro. Universidad del País Vasco; España
Fil: Arandes, José M.. Universidad del País Vasco; España
Fil: Olazar, Martin. Universidad del País Vasco; España
Fil: Bilbao, Javier. Universidad del País Vasco; España
Fil: Pawelec, Bárbara. Consejo Superior de Investigaciones Científicas. Instituto de Catálisis y Petroleoquímica; España
Fil: Sedran, Ulises Anselmo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
description Hydrocracking of secondary interest refinery streams (high aromatic content) can yield valuable products for transportation and petrochemical industry. In order to promote the hydrogenation and cracking steps, a bifunctional catalyst (metal + acid function) is required. We have studied the effect of the operating conditions on cycloalkane (product of aromatic hydrogenation) ring opening over a monofunctional HZSM-5 zeolite, by focusing on the effect of hydrogen in the cracking mechanisms. Methylcyclohexane has been selected as the test reactant and the conditions used corresponds to temperature, 250-450 °C; space velocity, 0.7-1.1 h-1; pressure, 2-80 bar; hydrogen/methylcyclohexane molar ratio, 1-79; conversion, 0-100% (integral reactor). At these conditions the zeolite catalyses hydrogenation as well as cracking (bifunctional capabilities), thus the cracking mechanisms are directly affected by hydrogen as products (alkenes) and intermediates (carbenium ions) are saturated. The overall effect of rising hydrogen partial pressure is an enhancement of (hydro)isomerization and monomolecular cracking, that is, an increase of the yield/selectivity of methane, ethane, penthane and isoalkanes.
publishDate 2010
dc.date.none.fl_str_mv 2010-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/55475
Castaño, Pedro; Arandes, José M.; Olazar, Martin; Bilbao, Javier; Pawelec, Bárbara; et al.; Effect of hydrogen on the cracking mechanisms of cycloalkanes over zeolites; Elsevier Science; Catalysis Today; 150; 3-4; 3-2010; 363-367
0920-5861
CONICET Digital
CONICET
url http://hdl.handle.net/11336/55475
identifier_str_mv Castaño, Pedro; Arandes, José M.; Olazar, Martin; Bilbao, Javier; Pawelec, Bárbara; et al.; Effect of hydrogen on the cracking mechanisms of cycloalkanes over zeolites; Elsevier Science; Catalysis Today; 150; 3-4; 3-2010; 363-367
0920-5861
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cattod.2009.09.013
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0920586109006166
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842269723453030400
score 12.885934

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