Bifunctional intimacy and its interplay with metal-acid balance in shaped hydroisomerization catalysts
Autor(a) principal: | |
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Data de Publicação: | 2020 |
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/10400.21/12638 |
Resumo: | The combined impact of platinum location and metal-acid balance on the catalytic performances of HUSY zeolite alumina-shaped bifunctional catalysts was evaluated inn-hexadecane hydroconversion reaction. For well-balanced catalysts, the deposition of Pt in the alumina resulted in lower isomerization selectivity as compared to when platinum was located in the zeolite. In the latter case, the maximal distance between Pt and acid sites was found to be in the nanometric scale (high intimacy) whereas in the former it was in the micrometric scale (low intimacy), particularly due to the presence of large clusters of HUSY zeolite. Nevertheless, whenever proper balance between functions was not ensured in high-intimacy catalysts, the low-intimacy and well-balanced catalysts were shown to perform better. The requirement for nanometric metal-acid sites intimacy must be hence combined with an adequate metal-acid balance to achieve optimal catalytic performance. |
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Bifunctional intimacy and its interplay with metal-acid balance in shaped hydroisomerization catalystsHUSY zeoliteHydroisomerizationMetal-acid intimacyMetal-acid balanceShapingThe combined impact of platinum location and metal-acid balance on the catalytic performances of HUSY zeolite alumina-shaped bifunctional catalysts was evaluated inn-hexadecane hydroconversion reaction. For well-balanced catalysts, the deposition of Pt in the alumina resulted in lower isomerization selectivity as compared to when platinum was located in the zeolite. In the latter case, the maximal distance between Pt and acid sites was found to be in the nanometric scale (high intimacy) whereas in the former it was in the micrometric scale (low intimacy), particularly due to the presence of large clusters of HUSY zeolite. Nevertheless, whenever proper balance between functions was not ensured in high-intimacy catalysts, the low-intimacy and well-balanced catalysts were shown to perform better. The requirement for nanometric metal-acid sites intimacy must be hence combined with an adequate metal-acid balance to achieve optimal catalytic performance.WileyRCIPLMendes, PedroSilva, João MRibeiro, M FilipaDaudin, AntoineBouchy, Christophe2021-01-18T14:14:14Z2020-09-172020-09-17T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/12638engMENDES, Pedro S. F.; [et al] – Bifunctional intimacy and its interplay with metal-acid balance in shaped hydroisomerization catalysts. ChemCatChem. ISSN 1867-3880. Vol. 12, N.º 18 (2020), pp. 4582-45921867-388010.1002/cctc.2020006241867-3899metadata 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:RCAAP2023-08-03T10:05:57Zoai:repositorio.ipl.pt:10400.21/12638Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:20:41.376020Repositório 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 |
Bifunctional intimacy and its interplay with metal-acid balance in shaped hydroisomerization catalysts |
title |
Bifunctional intimacy and its interplay with metal-acid balance in shaped hydroisomerization catalysts |
spellingShingle |
Bifunctional intimacy and its interplay with metal-acid balance in shaped hydroisomerization catalysts Mendes, Pedro HUSY zeolite Hydroisomerization Metal-acid intimacy Metal-acid balance Shaping |
title_short |
Bifunctional intimacy and its interplay with metal-acid balance in shaped hydroisomerization catalysts |
title_full |
Bifunctional intimacy and its interplay with metal-acid balance in shaped hydroisomerization catalysts |
title_fullStr |
Bifunctional intimacy and its interplay with metal-acid balance in shaped hydroisomerization catalysts |
title_full_unstemmed |
Bifunctional intimacy and its interplay with metal-acid balance in shaped hydroisomerization catalysts |
title_sort |
Bifunctional intimacy and its interplay with metal-acid balance in shaped hydroisomerization catalysts |
author |
Mendes, Pedro |
author_facet |
Mendes, Pedro Silva, João M Ribeiro, M Filipa Daudin, Antoine Bouchy, Christophe |
author_role |
author |
author2 |
Silva, João M Ribeiro, M Filipa Daudin, Antoine Bouchy, Christophe |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
RCIPL |
dc.contributor.author.fl_str_mv |
Mendes, Pedro Silva, João M Ribeiro, M Filipa Daudin, Antoine Bouchy, Christophe |
dc.subject.por.fl_str_mv |
HUSY zeolite Hydroisomerization Metal-acid intimacy Metal-acid balance Shaping |
topic |
HUSY zeolite Hydroisomerization Metal-acid intimacy Metal-acid balance Shaping |
description |
The combined impact of platinum location and metal-acid balance on the catalytic performances of HUSY zeolite alumina-shaped bifunctional catalysts was evaluated inn-hexadecane hydroconversion reaction. For well-balanced catalysts, the deposition of Pt in the alumina resulted in lower isomerization selectivity as compared to when platinum was located in the zeolite. In the latter case, the maximal distance between Pt and acid sites was found to be in the nanometric scale (high intimacy) whereas in the former it was in the micrometric scale (low intimacy), particularly due to the presence of large clusters of HUSY zeolite. Nevertheless, whenever proper balance between functions was not ensured in high-intimacy catalysts, the low-intimacy and well-balanced catalysts were shown to perform better. The requirement for nanometric metal-acid sites intimacy must be hence combined with an adequate metal-acid balance to achieve optimal catalytic performance. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-09-17 2020-09-17T00:00:00Z 2021-01-18T14:14:14Z |
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/10400.21/12638 |
url |
http://hdl.handle.net/10400.21/12638 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
MENDES, Pedro S. F.; [et al] – Bifunctional intimacy and its interplay with metal-acid balance in shaped hydroisomerization catalysts. ChemCatChem. ISSN 1867-3880. Vol. 12, N.º 18 (2020), pp. 4582-4592 1867-3880 10.1002/cctc.202000624 1867-3899 |
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 |
Wiley |
publisher.none.fl_str_mv |
Wiley |
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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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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1799133476558995456 |