Passivation of Co/Al2O3 Catalyst by Atomic Layer Deposition to Reduce Deactivation in the Fischer-Tropsch Synthesis

The present work explores the technical feasibility of passivating a Co/γ-Al2O3catalyst byatomic layer deposition (ALD) to reduce deactivation rate during Fischer-Tropsch synthesis (FTS).Three samples of the reference catalyst were passivated using different numbers of ALD cycles (3, 6and 10). Chara...

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Authors: Díaz López, José Antonio, Guilera Sala, Jordi, Biset Peiró, Martí, Enache, Dan, Kelly, Gordon, Andreu Arbella, Teresa
Format: article
Status:Published version
Publication Date:2021
Country:España
Institution:Universidad de Barcelona
Repository:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/179390
Online Access:https://hdl.handle.net/2445/179390
Access Level:Open access
Keyword:Cobalt
Catalitzadors
Combustibles sintètics
Catalysts
Synthetic fuels
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spelling Passivation of Co/Al2O3 Catalyst by Atomic Layer Deposition to Reduce Deactivation in the Fischer-Tropsch SynthesisDíaz López, José AntonioGuilera Sala, JordiBiset Peiró, MartíEnache, DanKelly, GordonAndreu Arbella, TeresaCobaltCatalitzadorsCombustibles sintèticsCobaltCatalystsSynthetic fuelsThe present work explores the technical feasibility of passivating a Co/γ-Al2O3catalyst byatomic layer deposition (ALD) to reduce deactivation rate during Fischer-Tropsch synthesis (FTS).Three samples of the reference catalyst were passivated using different numbers of ALD cycles (3, 6and 10). Characterization results revealed that a shell of the passivating agent (Al2O3) grew aroundcatalyst particles. This shell did not affect the properties of passivated samples below 10 cycles, inwhich catalyst reduction was hindered. Catalytic tests at 50% CO conversion evidenced that 3 and6 ALD cycles increased catalyst stability without significantly affecting the catalytic performance,whereas 10 cycles caused blockage of the active phase that led to a strong decrease of catalytic activity.Catalyst deactivation modelling and tests at 60% CO conversion served to conclude that 3 to 6 ALDcycles reduced Co/γ-Al2O3deactivation, so that the technical feasibility of this technique was provenin FTS.MDPI2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/179390Articles publicats en revistes (Ciència dels Materials i Química Física)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.3390/catal11060732Catalysts, 2021, vol. 11, num. 6, p. 732-1-732-16https://doi.org/10.3390/catal11060732info:eu-repo/grantAgreement/EC/H2020/764675cc-by (c) Díaz López, José Antonio et al., 2021https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1793902026-05-27T06:46:51Z
dc.title.none.fl_str_mv Passivation of Co/Al2O3 Catalyst by Atomic Layer Deposition to Reduce Deactivation in the Fischer-Tropsch Synthesis
title Passivation of Co/Al2O3 Catalyst by Atomic Layer Deposition to Reduce Deactivation in the Fischer-Tropsch Synthesis
spellingShingle Passivation of Co/Al2O3 Catalyst by Atomic Layer Deposition to Reduce Deactivation in the Fischer-Tropsch Synthesis
Díaz López, José Antonio
Cobalt
Catalitzadors
Combustibles sintètics
Cobalt
Catalysts
Synthetic fuels
title_short Passivation of Co/Al2O3 Catalyst by Atomic Layer Deposition to Reduce Deactivation in the Fischer-Tropsch Synthesis
title_full Passivation of Co/Al2O3 Catalyst by Atomic Layer Deposition to Reduce Deactivation in the Fischer-Tropsch Synthesis
title_fullStr Passivation of Co/Al2O3 Catalyst by Atomic Layer Deposition to Reduce Deactivation in the Fischer-Tropsch Synthesis
title_full_unstemmed Passivation of Co/Al2O3 Catalyst by Atomic Layer Deposition to Reduce Deactivation in the Fischer-Tropsch Synthesis
title_sort Passivation of Co/Al2O3 Catalyst by Atomic Layer Deposition to Reduce Deactivation in the Fischer-Tropsch Synthesis
dc.creator.none.fl_str_mv Díaz López, José Antonio
Guilera Sala, Jordi
Biset Peiró, Martí
Enache, Dan
Kelly, Gordon
Andreu Arbella, Teresa
author Díaz López, José Antonio
author_facet Díaz López, José Antonio
Guilera Sala, Jordi
Biset Peiró, Martí
Enache, Dan
Kelly, Gordon
Andreu Arbella, Teresa
author_role author
author2 Guilera Sala, Jordi
Biset Peiró, Martí
Enache, Dan
Kelly, Gordon
Andreu Arbella, Teresa
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Cobalt
Catalitzadors
Combustibles sintètics
Cobalt
Catalysts
Synthetic fuels
topic Cobalt
Catalitzadors
Combustibles sintètics
Cobalt
Catalysts
Synthetic fuels
description The present work explores the technical feasibility of passivating a Co/γ-Al2O3catalyst byatomic layer deposition (ALD) to reduce deactivation rate during Fischer-Tropsch synthesis (FTS).Three samples of the reference catalyst were passivated using different numbers of ALD cycles (3, 6and 10). Characterization results revealed that a shell of the passivating agent (Al2O3) grew aroundcatalyst particles. This shell did not affect the properties of passivated samples below 10 cycles, inwhich catalyst reduction was hindered. Catalytic tests at 50% CO conversion evidenced that 3 and6 ALD cycles increased catalyst stability without significantly affecting the catalytic performance,whereas 10 cycles caused blockage of the active phase that led to a strong decrease of catalytic activity.Catalyst deactivation modelling and tests at 60% CO conversion served to conclude that 3 to 6 ALDcycles reduced Co/γ-Al2O3deactivation, so that the technical feasibility of this technique was provenin FTS.
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/179390
url https://hdl.handle.net/2445/179390
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.3390/catal11060732
Catalysts, 2021, vol. 11, num. 6, p. 732-1-732-16
https://doi.org/10.3390/catal11060732
info:eu-repo/grantAgreement/EC/H2020/764675
dc.rights.none.fl_str_mv cc-by (c) Díaz López, José Antonio et al., 2021
https://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Díaz López, José Antonio et al., 2021
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv Articles publicats en revistes (Ciència dels Materials i Química Física)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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