Bridging the gap between academic and industrial hydrocracking: on catalyst and operating conditions' effects
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/10400.21/13460 |
Resumo: | This work aims at bridging the knowledge gap between the well-studied Pt/zeolite catalysts and the industrially-employed NiMoS/(Al2O3+ zeolite) ones. To do so, catalyst series based on HUSY zeolite were evaluated in the hydroconversion of n-hexadecane under similar operating conditions, but the industrially-relevant H2S and NH(3)contaminants were added when evaluating the latter. The intrinsic performance of Pt/HUSY and NiMoS/(Al2O3+ HUSY) catalysts was noticeably similar, when well-balanced, with the catalytic activity being however much lower in the latter (temperature gap of 125 K). Ammonia inhibition of more than 99% of the protonic sites was revealed to be the origin of such low activity. On the other hand, the metal-acid balance was only reached at sufficiently low reaction temperatures (ca.593 K),i.e.when the NH(3)inhibiting effect increased the metal to acid site ratio in NiMoS/(Al2O3+ HUSY) to values five orders of magnitude larger than those in the Pt/HUSY one. In addition to the understanding achieved on the role of metal-acid balance in industrial-like catalysts and its key controlling parameters, these findings also point to the need to develop better hydrogenating functions to improve the efficiency, and consequently the sustainability of liquid fuel production. |
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Bridging the gap between academic and industrial hydrocracking: on catalyst and operating conditions' effectsPt/zeolite catalystsNiMoS/(Al2O3+ zeolite)HUSY zeoliten-hexadecaneThis work aims at bridging the knowledge gap between the well-studied Pt/zeolite catalysts and the industrially-employed NiMoS/(Al2O3+ zeolite) ones. To do so, catalyst series based on HUSY zeolite were evaluated in the hydroconversion of n-hexadecane under similar operating conditions, but the industrially-relevant H2S and NH(3)contaminants were added when evaluating the latter. The intrinsic performance of Pt/HUSY and NiMoS/(Al2O3+ HUSY) catalysts was noticeably similar, when well-balanced, with the catalytic activity being however much lower in the latter (temperature gap of 125 K). Ammonia inhibition of more than 99% of the protonic sites was revealed to be the origin of such low activity. On the other hand, the metal-acid balance was only reached at sufficiently low reaction temperatures (ca.593 K),i.e.when the NH(3)inhibiting effect increased the metal to acid site ratio in NiMoS/(Al2O3+ HUSY) to values five orders of magnitude larger than those in the Pt/HUSY one. In addition to the understanding achieved on the role of metal-acid balance in industrial-like catalysts and its key controlling parameters, these findings also point to the need to develop better hydrogenating functions to improve the efficiency, and consequently the sustainability of liquid fuel production.Royal Society of ChemistryRCIPLMendes, Pedro S. F.Silva, João MRibeiro, M FilipaDaudin, AntoineBouchy, Christophe2021-06-21T14:32:23Z2020-08-072020-08-07T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/13460engMENDES, Pedro S. F.; [et al] – Bridging the gap between academic and industrial hydrocracking: on catalyst and operating conditions' effects. Catalysis Science and Technology. ISSN 2044-4753. Vol. 10, N.º 15 (2020), pp. 1-132044-475310.1039/d0cy00568a2044-4761metadata 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:RCAAP2023-08-03T10:08:11Zoai:repositorio.ipl.pt:10400.21/13460Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:21:24.381727Repositório 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 |
Bridging the gap between academic and industrial hydrocracking: on catalyst and operating conditions' effects |
title |
Bridging the gap between academic and industrial hydrocracking: on catalyst and operating conditions' effects |
spellingShingle |
Bridging the gap between academic and industrial hydrocracking: on catalyst and operating conditions' effects Mendes, Pedro S. F. Pt/zeolite catalysts NiMoS/(Al2O3+ zeolite) HUSY zeolite n-hexadecane |
title_short |
Bridging the gap between academic and industrial hydrocracking: on catalyst and operating conditions' effects |
title_full |
Bridging the gap between academic and industrial hydrocracking: on catalyst and operating conditions' effects |
title_fullStr |
Bridging the gap between academic and industrial hydrocracking: on catalyst and operating conditions' effects |
title_full_unstemmed |
Bridging the gap between academic and industrial hydrocracking: on catalyst and operating conditions' effects |
title_sort |
Bridging the gap between academic and industrial hydrocracking: on catalyst and operating conditions' effects |
author |
Mendes, Pedro S. F. |
author_facet |
Mendes, Pedro S. F. 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 S. F. Silva, João M Ribeiro, M Filipa Daudin, Antoine Bouchy, Christophe |
dc.subject.por.fl_str_mv |
Pt/zeolite catalysts NiMoS/(Al2O3+ zeolite) HUSY zeolite n-hexadecane |
topic |
Pt/zeolite catalysts NiMoS/(Al2O3+ zeolite) HUSY zeolite n-hexadecane |
description |
This work aims at bridging the knowledge gap between the well-studied Pt/zeolite catalysts and the industrially-employed NiMoS/(Al2O3+ zeolite) ones. To do so, catalyst series based on HUSY zeolite were evaluated in the hydroconversion of n-hexadecane under similar operating conditions, but the industrially-relevant H2S and NH(3)contaminants were added when evaluating the latter. The intrinsic performance of Pt/HUSY and NiMoS/(Al2O3+ HUSY) catalysts was noticeably similar, when well-balanced, with the catalytic activity being however much lower in the latter (temperature gap of 125 K). Ammonia inhibition of more than 99% of the protonic sites was revealed to be the origin of such low activity. On the other hand, the metal-acid balance was only reached at sufficiently low reaction temperatures (ca.593 K),i.e.when the NH(3)inhibiting effect increased the metal to acid site ratio in NiMoS/(Al2O3+ HUSY) to values five orders of magnitude larger than those in the Pt/HUSY one. In addition to the understanding achieved on the role of metal-acid balance in industrial-like catalysts and its key controlling parameters, these findings also point to the need to develop better hydrogenating functions to improve the efficiency, and consequently the sustainability of liquid fuel production. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-08-07 2020-08-07T00:00:00Z 2021-06-21T14:32:23Z |
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/10400.21/13460 |
url |
http://hdl.handle.net/10400.21/13460 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
MENDES, Pedro S. F.; [et al] – Bridging the gap between academic and industrial hydrocracking: on catalyst and operating conditions' effects. Catalysis Science and Technology. ISSN 2044-4753. Vol. 10, N.º 15 (2020), pp. 1-13 2044-4753 10.1039/d0cy00568a 2044-4761 |
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 |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799133484900417536 |