A systematic study on mixtures of Pt/zeolite as hydroisomerization catalysts
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.21/6997 |
Resumo: | Mixtures of bifunctional catalysts were studied in the hydroisomerization of n-hexadecane. The study focused on the impact of the properties of individual catalysts on the hybrid catalysts' performance. On the one hand, a Pt/HUSY catalyst was mixed with a series of Pt/zeolites with different topologies and acidities, all of the catalysts being individually well-balanced. Despite the diversity of Pt/zeolite catalysts in terms of both activity and isomerization selectivity, the performances of the hybrid catalysts corresponded to the average of individual components. Cooperative effects are proposed to be caused by a great difference in the relative activity of the Pt/zeolite catalysts rather than in selectivity. On the other hand, mixtures of large-pore Pt/HUSY and Pt/HBEA catalysts with different Pt loadings were tested. The performance of the resulting hybrid catalysts was observed to be a function of global metal-acid balance. Mixtures of poorly-balanced and well-balanced catalysts can be at the origin of cooperative effects, as demonstrated experimentally by an improved C-16 isomer yield. The use of a dual-function kinetic model to simulate the performance of the hybrid catalysts corroborated these interpretations. This comprehensive work is expected to serve as a guideline for uncovering hybrid catalytic systems with industrial applications such as in the hydroisomerization of long chain n-paraffins. |
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A systematic study on mixtures of Pt/zeolite as hydroisomerization catalystsChain n-alkanesShape-selectivityProduct selectivityZeolite nanosheetsReaction-mechanismIntimate mixturesFuel productionY-zeolitesHydrocrackingIsomerizationMixtures of bifunctional catalysts were studied in the hydroisomerization of n-hexadecane. The study focused on the impact of the properties of individual catalysts on the hybrid catalysts' performance. On the one hand, a Pt/HUSY catalyst was mixed with a series of Pt/zeolites with different topologies and acidities, all of the catalysts being individually well-balanced. Despite the diversity of Pt/zeolite catalysts in terms of both activity and isomerization selectivity, the performances of the hybrid catalysts corresponded to the average of individual components. Cooperative effects are proposed to be caused by a great difference in the relative activity of the Pt/zeolite catalysts rather than in selectivity. On the other hand, mixtures of large-pore Pt/HUSY and Pt/HBEA catalysts with different Pt loadings were tested. The performance of the resulting hybrid catalysts was observed to be a function of global metal-acid balance. Mixtures of poorly-balanced and well-balanced catalysts can be at the origin of cooperative effects, as demonstrated experimentally by an improved C-16 isomer yield. The use of a dual-function kinetic model to simulate the performance of the hybrid catalysts corroborated these interpretations. This comprehensive work is expected to serve as a guideline for uncovering hybrid catalytic systems with industrial applications such as in the hydroisomerization of long chain n-paraffins.Royal Society of ChemistryRCIPLMendes, PedroMarques Mota, FilipeSilva, JoãoRibeiro, M FilipaDaudin, AntoineBouchy, Christophe2017-05-10T10:56:32Z2017-032017-03-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/6997engMENDES, Pedro S. F.; [et al] – A systematic study on mixtures of Pt/zeolite as hydroisomerization catalysts. Catalysis Science & Technology. ISSN 2044-4753. Vol. 7, N.º 5 (2017), pp. 1095-11072044-475310.1039/c6cy02642gmetadata only accessinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-03T09:52:29Zoai:repositorio.ipl.pt:10400.21/6997Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:16:02.573533Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
A systematic study on mixtures of Pt/zeolite as hydroisomerization catalysts |
title |
A systematic study on mixtures of Pt/zeolite as hydroisomerization catalysts |
spellingShingle |
A systematic study on mixtures of Pt/zeolite as hydroisomerization catalysts Mendes, Pedro Chain n-alkanes Shape-selectivity Product selectivity Zeolite nanosheets Reaction-mechanism Intimate mixtures Fuel production Y-zeolites Hydrocracking Isomerization |
title_short |
A systematic study on mixtures of Pt/zeolite as hydroisomerization catalysts |
title_full |
A systematic study on mixtures of Pt/zeolite as hydroisomerization catalysts |
title_fullStr |
A systematic study on mixtures of Pt/zeolite as hydroisomerization catalysts |
title_full_unstemmed |
A systematic study on mixtures of Pt/zeolite as hydroisomerization catalysts |
title_sort |
A systematic study on mixtures of Pt/zeolite as hydroisomerization catalysts |
author |
Mendes, Pedro |
author_facet |
Mendes, Pedro Marques Mota, Filipe Silva, João Ribeiro, M Filipa Daudin, Antoine Bouchy, Christophe |
author_role |
author |
author2 |
Marques Mota, Filipe Silva, João Ribeiro, M Filipa Daudin, Antoine Bouchy, Christophe |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
RCIPL |
dc.contributor.author.fl_str_mv |
Mendes, Pedro Marques Mota, Filipe Silva, João Ribeiro, M Filipa Daudin, Antoine Bouchy, Christophe |
dc.subject.por.fl_str_mv |
Chain n-alkanes Shape-selectivity Product selectivity Zeolite nanosheets Reaction-mechanism Intimate mixtures Fuel production Y-zeolites Hydrocracking Isomerization |
topic |
Chain n-alkanes Shape-selectivity Product selectivity Zeolite nanosheets Reaction-mechanism Intimate mixtures Fuel production Y-zeolites Hydrocracking Isomerization |
description |
Mixtures of bifunctional catalysts were studied in the hydroisomerization of n-hexadecane. The study focused on the impact of the properties of individual catalysts on the hybrid catalysts' performance. On the one hand, a Pt/HUSY catalyst was mixed with a series of Pt/zeolites with different topologies and acidities, all of the catalysts being individually well-balanced. Despite the diversity of Pt/zeolite catalysts in terms of both activity and isomerization selectivity, the performances of the hybrid catalysts corresponded to the average of individual components. Cooperative effects are proposed to be caused by a great difference in the relative activity of the Pt/zeolite catalysts rather than in selectivity. On the other hand, mixtures of large-pore Pt/HUSY and Pt/HBEA catalysts with different Pt loadings were tested. The performance of the resulting hybrid catalysts was observed to be a function of global metal-acid balance. Mixtures of poorly-balanced and well-balanced catalysts can be at the origin of cooperative effects, as demonstrated experimentally by an improved C-16 isomer yield. The use of a dual-function kinetic model to simulate the performance of the hybrid catalysts corroborated these interpretations. This comprehensive work is expected to serve as a guideline for uncovering hybrid catalytic systems with industrial applications such as in the hydroisomerization of long chain n-paraffins. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-05-10T10:56:32Z 2017-03 2017-03-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.21/6997 |
url |
http://hdl.handle.net/10400.21/6997 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
MENDES, Pedro S. F.; [et al] – A systematic study on mixtures of Pt/zeolite as hydroisomerization catalysts. Catalysis Science & Technology. ISSN 2044-4753. Vol. 7, N.º 5 (2017), pp. 1095-1107 2044-4753 10.1039/c6cy02642g |
dc.rights.driver.fl_str_mv |
metadata only access info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
metadata only access |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Royal Society of Chemistry |
publisher.none.fl_str_mv |
Royal Society of Chemistry |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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