Selective ring opening of methylcyclohexane and decalin over Rh-Pd supported catalysts: Effect of the preparation method

Autores
D'ippolito, Silvana Andrea; Especel, Catherine; Epron, Florence; Pieck, Carlos Luis
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Bimetallic Rh-Pd catalysts prepared by various impregnation methods were evaluated in the selective ring-opening of decalin and methylcyclohexane (MCH) used as model molecules of hydrogenated aromatics of the Light Cycle Oil fraction. Rh and Pt were deposited on Al2O3 and SiO2-Al2O3 (S40) by coimpregnation (CI) or successive impregnations (SI) with different orders of metal addition. Catalysts were characterized by H2 chemisorption, temperature programmed reduction, temperature-programmed desorption of pyridine, and test reactions of cyclopentane hydrogenolysis and isomerization of 3,3-dimethyl-1-butene. Their catalytic behaviors for the ring-opening reaction were deeply influenced by the acidity of the support, and in a lesser extent by the metal deposition method. On both supports, the CI catalysts, displaying the highest dispersion values, exhibited the best ring opening performances. In the case of the SI catalysts, the addition order of both metals modified in a moderate way the properties of the catalyst. The yield to ring opening products obtained in MCH ring opening with CI catalysts supported on Al2O3 was 39-69% higher than those prepared by SI (conversion = 55-60%) while for the catalysts supported on S40, the yield to ring opening products was 8-48% higher for the CI catalysts compared to SI catalysts (conversion = 72-77%). The conversion of decalin for the bimetallic catalysts supported on Al2O3 was lower than 20% being dehydrogenated compounds the main reaction products regardless the preparation method. The catalyst supported on S40 showed decalin conversion values between 46-53% and yield to ring opening near to 30%. Moreover, the CI catalysts have yield to ring opening 10 to 20% higher than the catalysts prepared by SI. The catalyst prepared by coimpregnation supported on S40 was the most appropriate for opening the MCH and decalin due to an optimal balance between the metal and acid functions.
Fil: D'ippolito, Silvana Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Especel, Catherine. Université de Poitiers; Francia
Fil: Epron, Florence. Université de Poitiers; Francia
Fil: Pieck, Carlos Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Materia
Valorization of Lco
Ring Opening of Naphthenes
Methylcyclohexane
Decalin
Rh-Pd
Silica-Alumina
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/36652
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/36652
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Selective ring opening of methylcyclohexane and decalin over Rh-Pd supported catalysts: Effect of the preparation methodD'ippolito, Silvana AndreaEspecel, CatherineEpron, FlorencePieck, Carlos LuisValorization of LcoRing Opening of NaphthenesMethylcyclohexaneDecalinRh-PdSilica-Aluminahttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Bimetallic Rh-Pd catalysts prepared by various impregnation methods were evaluated in the selective ring-opening of decalin and methylcyclohexane (MCH) used as model molecules of hydrogenated aromatics of the Light Cycle Oil fraction. Rh and Pt were deposited on Al2O3 and SiO2-Al2O3 (S40) by coimpregnation (CI) or successive impregnations (SI) with different orders of metal addition. Catalysts were characterized by H2 chemisorption, temperature programmed reduction, temperature-programmed desorption of pyridine, and test reactions of cyclopentane hydrogenolysis and isomerization of 3,3-dimethyl-1-butene. Their catalytic behaviors for the ring-opening reaction were deeply influenced by the acidity of the support, and in a lesser extent by the metal deposition method. On both supports, the CI catalysts, displaying the highest dispersion values, exhibited the best ring opening performances. In the case of the SI catalysts, the addition order of both metals modified in a moderate way the properties of the catalyst. The yield to ring opening products obtained in MCH ring opening with CI catalysts supported on Al2O3 was 39-69% higher than those prepared by SI (conversion = 55-60%) while for the catalysts supported on S40, the yield to ring opening products was 8-48% higher for the CI catalysts compared to SI catalysts (conversion = 72-77%). The conversion of decalin for the bimetallic catalysts supported on Al2O3 was lower than 20% being dehydrogenated compounds the main reaction products regardless the preparation method. The catalyst supported on S40 showed decalin conversion values between 46-53% and yield to ring opening near to 30%. Moreover, the CI catalysts have yield to ring opening 10 to 20% higher than the catalysts prepared by SI. The catalyst prepared by coimpregnation supported on S40 was the most appropriate for opening the MCH and decalin due to an optimal balance between the metal and acid functions.Fil: D'ippolito, Silvana Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Especel, Catherine. Université de Poitiers; FranciaFil: Epron, Florence. Université de Poitiers; FranciaFil: Pieck, Carlos Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaElsevier2015-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/36652D'ippolito, Silvana Andrea; Especel, Catherine; Epron, Florence; Pieck, Carlos Luis; Selective ring opening of methylcyclohexane and decalin over Rh-Pd supported catalysts: Effect of the preparation method; Elsevier; Fuel Processing Technology; 140; 12-2015; 180-1870378-3820CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.fuproc.2015.08.027info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0378382015301399info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:50:43Zoai:ri.conicet.gov.ar:11336/36652instacron: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:34982025-09-29 09:50:43.928CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Selective ring opening of methylcyclohexane and decalin over Rh-Pd supported catalysts: Effect of the preparation method
title Selective ring opening of methylcyclohexane and decalin over Rh-Pd supported catalysts: Effect of the preparation method
spellingShingle Selective ring opening of methylcyclohexane and decalin over Rh-Pd supported catalysts: Effect of the preparation method
D'ippolito, Silvana Andrea
Valorization of Lco
Ring Opening of Naphthenes
Methylcyclohexane
Decalin
Rh-Pd
Silica-Alumina
title_short Selective ring opening of methylcyclohexane and decalin over Rh-Pd supported catalysts: Effect of the preparation method
title_full Selective ring opening of methylcyclohexane and decalin over Rh-Pd supported catalysts: Effect of the preparation method
title_fullStr Selective ring opening of methylcyclohexane and decalin over Rh-Pd supported catalysts: Effect of the preparation method
title_full_unstemmed Selective ring opening of methylcyclohexane and decalin over Rh-Pd supported catalysts: Effect of the preparation method
title_sort Selective ring opening of methylcyclohexane and decalin over Rh-Pd supported catalysts: Effect of the preparation method
dc.creator.none.fl_str_mv D'ippolito, Silvana Andrea
Especel, Catherine
Epron, Florence
Pieck, Carlos Luis
author D'ippolito, Silvana Andrea
author_facet D'ippolito, Silvana Andrea
Especel, Catherine
Epron, Florence
Pieck, Carlos Luis
author_role author
author2 Especel, Catherine
Epron, Florence
Pieck, Carlos Luis
author2_role author
author
author
dc.subject.none.fl_str_mv Valorization of Lco
Ring Opening of Naphthenes
Methylcyclohexane
Decalin
Rh-Pd
Silica-Alumina
topic Valorization of Lco
Ring Opening of Naphthenes
Methylcyclohexane
Decalin
Rh-Pd
Silica-Alumina
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Bimetallic Rh-Pd catalysts prepared by various impregnation methods were evaluated in the selective ring-opening of decalin and methylcyclohexane (MCH) used as model molecules of hydrogenated aromatics of the Light Cycle Oil fraction. Rh and Pt were deposited on Al2O3 and SiO2-Al2O3 (S40) by coimpregnation (CI) or successive impregnations (SI) with different orders of metal addition. Catalysts were characterized by H2 chemisorption, temperature programmed reduction, temperature-programmed desorption of pyridine, and test reactions of cyclopentane hydrogenolysis and isomerization of 3,3-dimethyl-1-butene. Their catalytic behaviors for the ring-opening reaction were deeply influenced by the acidity of the support, and in a lesser extent by the metal deposition method. On both supports, the CI catalysts, displaying the highest dispersion values, exhibited the best ring opening performances. In the case of the SI catalysts, the addition order of both metals modified in a moderate way the properties of the catalyst. The yield to ring opening products obtained in MCH ring opening with CI catalysts supported on Al2O3 was 39-69% higher than those prepared by SI (conversion = 55-60%) while for the catalysts supported on S40, the yield to ring opening products was 8-48% higher for the CI catalysts compared to SI catalysts (conversion = 72-77%). The conversion of decalin for the bimetallic catalysts supported on Al2O3 was lower than 20% being dehydrogenated compounds the main reaction products regardless the preparation method. The catalyst supported on S40 showed decalin conversion values between 46-53% and yield to ring opening near to 30%. Moreover, the CI catalysts have yield to ring opening 10 to 20% higher than the catalysts prepared by SI. The catalyst prepared by coimpregnation supported on S40 was the most appropriate for opening the MCH and decalin due to an optimal balance between the metal and acid functions.
Fil: D'ippolito, Silvana Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Especel, Catherine. Université de Poitiers; Francia
Fil: Epron, Florence. Université de Poitiers; Francia
Fil: Pieck, Carlos Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
description Bimetallic Rh-Pd catalysts prepared by various impregnation methods were evaluated in the selective ring-opening of decalin and methylcyclohexane (MCH) used as model molecules of hydrogenated aromatics of the Light Cycle Oil fraction. Rh and Pt were deposited on Al2O3 and SiO2-Al2O3 (S40) by coimpregnation (CI) or successive impregnations (SI) with different orders of metal addition. Catalysts were characterized by H2 chemisorption, temperature programmed reduction, temperature-programmed desorption of pyridine, and test reactions of cyclopentane hydrogenolysis and isomerization of 3,3-dimethyl-1-butene. Their catalytic behaviors for the ring-opening reaction were deeply influenced by the acidity of the support, and in a lesser extent by the metal deposition method. On both supports, the CI catalysts, displaying the highest dispersion values, exhibited the best ring opening performances. In the case of the SI catalysts, the addition order of both metals modified in a moderate way the properties of the catalyst. The yield to ring opening products obtained in MCH ring opening with CI catalysts supported on Al2O3 was 39-69% higher than those prepared by SI (conversion = 55-60%) while for the catalysts supported on S40, the yield to ring opening products was 8-48% higher for the CI catalysts compared to SI catalysts (conversion = 72-77%). The conversion of decalin for the bimetallic catalysts supported on Al2O3 was lower than 20% being dehydrogenated compounds the main reaction products regardless the preparation method. The catalyst supported on S40 showed decalin conversion values between 46-53% and yield to ring opening near to 30%. Moreover, the CI catalysts have yield to ring opening 10 to 20% higher than the catalysts prepared by SI. The catalyst prepared by coimpregnation supported on S40 was the most appropriate for opening the MCH and decalin due to an optimal balance between the metal and acid functions.
publishDate 2015
dc.date.none.fl_str_mv 2015-12
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/11336/36652
D'ippolito, Silvana Andrea; Especel, Catherine; Epron, Florence; Pieck, Carlos Luis; Selective ring opening of methylcyclohexane and decalin over Rh-Pd supported catalysts: Effect of the preparation method; Elsevier; Fuel Processing Technology; 140; 12-2015; 180-187
0378-3820
CONICET Digital
CONICET
url http://hdl.handle.net/11336/36652
identifier_str_mv D'ippolito, Silvana Andrea; Especel, Catherine; Epron, Florence; Pieck, Carlos Luis; Selective ring opening of methylcyclohexane and decalin over Rh-Pd supported catalysts: Effect of the preparation method; Elsevier; Fuel Processing Technology; 140; 12-2015; 180-187
0378-3820
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.fuproc.2015.08.027
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0378382015301399
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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
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score 13.070432

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