Behaviour of Pt/TiO2 catalysts with different morphological and structural characteristics in the photocatalytic conversion of ethanol aqueous solutions

Pt/TiO2 catalysts with a similar Pt dispersion and different morphological and structural characteristics were prepared, characterized and used in the photocatalytic transformation of aqueous ethanol solutions at room temperature. The characteristics of the catalysts allowed the comparison of their...

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Autores: Cordoba Sola, Alberto, Ramírez de la Piscina, Pilar, Homs Martí, Narcís
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2020
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/207231
Acceso en línea:http://hdl.handle.net/2445/207231
Access Level:acceso abierto
Palabra clave:Catalitzadors
Quimiosorció
Alcohol
Catalysts
Chemisorption
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spelling Behaviour of Pt/TiO2 catalysts with different morphological and structural characteristics in the photocatalytic conversion of ethanol aqueous solutionsCordoba Sola, AlbertoRamírez de la Piscina, PilarHoms Martí, NarcísCatalitzadorsQuimiosorcióAlcoholCatalystsChemisorptionAlcoholPt/TiO2 catalysts with a similar Pt dispersion and different morphological and structural characteristics were prepared, characterized and used in the photocatalytic transformation of aqueous ethanol solutions at room temperature. The characteristics of the catalysts allowed the comparison of their catalytic behaviour as a function their structural and morphological properties, which determined both the amount of hydrogen produced and the nature of the carbon-containing products. The characterization techniques used include N2 physisorption, XRD, TEM, Raman, UV–vis and XP spectroscopies, H2-TPR and CO chemisorption. Temperature programmed desorption of post-reaction catalysts was followed by DRIFTS-MS. The Pt/TiO2 catalysts contained only anatase (Pt/A catalysts) or both anatase and rutile (Pt/AR catalysts), and had surface area from approximately 50 m2·g−1 to 100 m2·g−1 with mean pore sizes varying from 5 to 43 nm. Pt/TiO2 catalysts having surface area of approximately 50 m2·g−1 and mean pore size of 30–40 nm produced more H2 than the other catalysts, with Pt/A50 being the catalyst which produced the most. In all cases, the major carbon-containing products in the liquid phase were acetaldehyde, 2,3-butanediol and acetic acid. A relationship between the mean pore size and the yield of 2,3-butanediol was established with most being produced over Pt/A100 which had the smallest pore size.Elsevier B.V.2024202420202024info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion8 p.application/pdfhttp://hdl.handle.net/2445/207231http://hdl.handle.net/2445/207231reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.1016/j.cattod.2018.06.017Catalysis Today, 2020, vol. 341, p. 13-20https://doi.org/10.1016/j.cattod.2018.06.017cc-by-nc-nd (c) Elsevier B.V., 2020http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/2072312026-05-29T05:05:01Z
dc.title.none.fl_str_mv Behaviour of Pt/TiO2 catalysts with different morphological and structural characteristics in the photocatalytic conversion of ethanol aqueous solutions
title Behaviour of Pt/TiO2 catalysts with different morphological and structural characteristics in the photocatalytic conversion of ethanol aqueous solutions
spellingShingle Behaviour of Pt/TiO2 catalysts with different morphological and structural characteristics in the photocatalytic conversion of ethanol aqueous solutions
Cordoba Sola, Alberto
Catalitzadors
Quimiosorció
Alcohol
Catalysts
Chemisorption
Alcohol
title_short Behaviour of Pt/TiO2 catalysts with different morphological and structural characteristics in the photocatalytic conversion of ethanol aqueous solutions
title_full Behaviour of Pt/TiO2 catalysts with different morphological and structural characteristics in the photocatalytic conversion of ethanol aqueous solutions
title_fullStr Behaviour of Pt/TiO2 catalysts with different morphological and structural characteristics in the photocatalytic conversion of ethanol aqueous solutions
title_full_unstemmed Behaviour of Pt/TiO2 catalysts with different morphological and structural characteristics in the photocatalytic conversion of ethanol aqueous solutions
title_sort Behaviour of Pt/TiO2 catalysts with different morphological and structural characteristics in the photocatalytic conversion of ethanol aqueous solutions
dc.creator.none.fl_str_mv Cordoba Sola, Alberto
Ramírez de la Piscina, Pilar
Homs Martí, Narcís
author Cordoba Sola, Alberto
author_facet Cordoba Sola, Alberto
Ramírez de la Piscina, Pilar
Homs Martí, Narcís
author_role author
author2 Ramírez de la Piscina, Pilar
Homs Martí, Narcís
author2_role author
author
dc.subject.none.fl_str_mv Catalitzadors
Quimiosorció
Alcohol
Catalysts
Chemisorption
Alcohol
topic Catalitzadors
Quimiosorció
Alcohol
Catalysts
Chemisorption
Alcohol
description Pt/TiO2 catalysts with a similar Pt dispersion and different morphological and structural characteristics were prepared, characterized and used in the photocatalytic transformation of aqueous ethanol solutions at room temperature. The characteristics of the catalysts allowed the comparison of their catalytic behaviour as a function their structural and morphological properties, which determined both the amount of hydrogen produced and the nature of the carbon-containing products. The characterization techniques used include N2 physisorption, XRD, TEM, Raman, UV–vis and XP spectroscopies, H2-TPR and CO chemisorption. Temperature programmed desorption of post-reaction catalysts was followed by DRIFTS-MS. The Pt/TiO2 catalysts contained only anatase (Pt/A catalysts) or both anatase and rutile (Pt/AR catalysts), and had surface area from approximately 50 m2·g−1 to 100 m2·g−1 with mean pore sizes varying from 5 to 43 nm. Pt/TiO2 catalysts having surface area of approximately 50 m2·g−1 and mean pore size of 30–40 nm produced more H2 than the other catalysts, with Pt/A50 being the catalyst which produced the most. In all cases, the major carbon-containing products in the liquid phase were acetaldehyde, 2,3-butanediol and acetic acid. A relationship between the mean pore size and the yield of 2,3-butanediol was established with most being produced over Pt/A100 which had the smallest pore size.
publishDate 2020
dc.date.none.fl_str_mv 2020
2024
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/2445/207231
http://hdl.handle.net/2445/207231
url http://hdl.handle.net/2445/207231
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1016/j.cattod.2018.06.017
Catalysis Today, 2020, vol. 341, p. 13-20
https://doi.org/10.1016/j.cattod.2018.06.017
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Elsevier B.V., 2020
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Elsevier B.V., 2020
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 8 p.
application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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