Co-Al spinel-based nanoparticles synthesized by flame spray pyrolysis for glycerol conversion

The catalytic properties of Co-Al spinel nanoparticles prepared by liquid-feed flame spray pyrolysis (L-F FSP) were investigated in the glycerol conversion in gas phase in an atmosphere of hydrogen. Reduction at 1123¿K of the as-synthesized spinel nanoparticles induced the formation a new phase cont...

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Detalles Bibliográficos
Autores: Lähde, A., Chimentao, Ricardo J., Karhunen, T., Alvarez, Mayra G., Llorca Piqué, Jordi|||0000-0002-7447-9582, Medina Mena, Francisco, Jokiniemi, J., Modesto Lopez, Luis B.
Tipo de recurso: artículo
Fecha de publicación:2017
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/112710
Acceso en línea:https://hdl.handle.net/2117/112710
https://dx.doi.org/10.1016/j.apt.2017.10.009
Access Level:acceso abierto
Palabra clave:Cobalt
Nanoparticles
Flame spray pyrolysis
Catalyst
Glycerol conversion
Nanopartícules
Àrees temàtiques de la UPC::Enginyeria química
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spelling Co-Al spinel-based nanoparticles synthesized by flame spray pyrolysis for glycerol conversionLähde, A.Chimentao, Ricardo J.Karhunen, T.Alvarez, Mayra G.Llorca Piqué, Jordi|||0000-0002-7447-9582Medina Mena, FranciscoJokiniemi, J.Modesto Lopez, Luis B.CobaltNanoparticlesFlame spray pyrolysisCatalystCobaltNanoparticlesGlycerol conversionCobaltNanopartículesÀrees temàtiques de la UPC::Enginyeria químicaThe catalytic properties of Co-Al spinel nanoparticles prepared by liquid-feed flame spray pyrolysis (L-F FSP) were investigated in the glycerol conversion in gas phase in an atmosphere of hydrogen. Reduction at 1123¿K of the as-synthesized spinel nanoparticles induced the formation a new phase containing metallic cobalt species. Although, the reducibility of cobalt oxides is greatly decreased due to interaction with aluminium species, this strong interaction may prevent the aggregation of Co particles under the harsh reduction conditions. X-ray photoelectron spectroscopy (XPS) of the reduced spinel nanoparticles at 1123¿K revealed that the Co/Al atomic ratio has decreased to Co/Al¿=¿0.11, which may indicate a redistribution of the aluminum and cobalt species at the surface of the sample submitted to the reduction in a flow of hydrogen at 1123¿K. X-ray diffraction (XRD) and high resolution electron microscopy (HRTEM) also reinforced the formation of metallic cobalt species after reduction of cobalt from the spinel nanoparticles at 1123¿K. The main products obtained from the conversion of glycerol in the gas phase were hydroxyacetone, pyruvaldehyde, lactic acid and lactide. FSP ensured uniform dispersion of the active metal on a support material.Peer Reviewed20172017-12-0120182018-01-12journal articlehttp://purl.org/coar/resource_type/c_6501AOhttp://purl.org/coar/version/c_b1a7d7d4d402bcceinfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/112710https://dx.doi.org/10.1016/j.apt.2017.10.009reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1127102026-05-27T15:37:01Z
dc.title.none.fl_str_mv Co-Al spinel-based nanoparticles synthesized by flame spray pyrolysis for glycerol conversion
title Co-Al spinel-based nanoparticles synthesized by flame spray pyrolysis for glycerol conversion
spellingShingle Co-Al spinel-based nanoparticles synthesized by flame spray pyrolysis for glycerol conversion
Lähde, A.
Cobalt
Nanoparticles
Flame spray pyrolysis
Catalyst
Cobalt
Nanoparticles
Glycerol conversion
Cobalt
Nanopartícules
Àrees temàtiques de la UPC::Enginyeria química
title_short Co-Al spinel-based nanoparticles synthesized by flame spray pyrolysis for glycerol conversion
title_full Co-Al spinel-based nanoparticles synthesized by flame spray pyrolysis for glycerol conversion
title_fullStr Co-Al spinel-based nanoparticles synthesized by flame spray pyrolysis for glycerol conversion
title_full_unstemmed Co-Al spinel-based nanoparticles synthesized by flame spray pyrolysis for glycerol conversion
title_sort Co-Al spinel-based nanoparticles synthesized by flame spray pyrolysis for glycerol conversion
dc.creator.none.fl_str_mv Lähde, A.
Chimentao, Ricardo J.
Karhunen, T.
Alvarez, Mayra G.
Llorca Piqué, Jordi|||0000-0002-7447-9582
Medina Mena, Francisco
Jokiniemi, J.
Modesto Lopez, Luis B.
author Lähde, A.
author_facet Lähde, A.
Chimentao, Ricardo J.
Karhunen, T.
Alvarez, Mayra G.
Llorca Piqué, Jordi|||0000-0002-7447-9582
Medina Mena, Francisco
Jokiniemi, J.
Modesto Lopez, Luis B.
author_role author
author2 Chimentao, Ricardo J.
Karhunen, T.
Alvarez, Mayra G.
Llorca Piqué, Jordi|||0000-0002-7447-9582
Medina Mena, Francisco
Jokiniemi, J.
Modesto Lopez, Luis B.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Cobalt
Nanoparticles
Flame spray pyrolysis
Catalyst
Cobalt
Nanoparticles
Glycerol conversion
Cobalt
Nanopartícules
Àrees temàtiques de la UPC::Enginyeria química
topic Cobalt
Nanoparticles
Flame spray pyrolysis
Catalyst
Cobalt
Nanoparticles
Glycerol conversion
Cobalt
Nanopartícules
Àrees temàtiques de la UPC::Enginyeria química
description The catalytic properties of Co-Al spinel nanoparticles prepared by liquid-feed flame spray pyrolysis (L-F FSP) were investigated in the glycerol conversion in gas phase in an atmosphere of hydrogen. Reduction at 1123¿K of the as-synthesized spinel nanoparticles induced the formation a new phase containing metallic cobalt species. Although, the reducibility of cobalt oxides is greatly decreased due to interaction with aluminium species, this strong interaction may prevent the aggregation of Co particles under the harsh reduction conditions. X-ray photoelectron spectroscopy (XPS) of the reduced spinel nanoparticles at 1123¿K revealed that the Co/Al atomic ratio has decreased to Co/Al¿=¿0.11, which may indicate a redistribution of the aluminum and cobalt species at the surface of the sample submitted to the reduction in a flow of hydrogen at 1123¿K. X-ray diffraction (XRD) and high resolution electron microscopy (HRTEM) also reinforced the formation of metallic cobalt species after reduction of cobalt from the spinel nanoparticles at 1123¿K. The main products obtained from the conversion of glycerol in the gas phase were hydroxyacetone, pyruvaldehyde, lactic acid and lactide. FSP ensured uniform dispersion of the active metal on a support material.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-12-01
2018
2018-01-12
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AO
http://purl.org/coar/version/c_b1a7d7d4d402bcce
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/112710
https://dx.doi.org/10.1016/j.apt.2017.10.009
url https://hdl.handle.net/2117/112710
https://dx.doi.org/10.1016/j.apt.2017.10.009
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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