Design of an optimized DRIFT cell/microreactor for spectrokinetic investigations of surface reaction mechanisms

Autores
Aguirre, Alejo; Collins, Sebastián Enrique
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A cell/microreactor is develop and fully characterized to perform diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) experiments to investigate heterogeneously catalyzed surface reactions. The experimental setup allows the simultaneous acquisition of time-resolved infrared spectra at high quality and the gas phase quantification by a mass spectrometer connected at the outlet of the cell. The cell behaves as a true plug-flow microreactor while allows the infrared radiation to sense the lateral part of the catalyst bed. The selected geometry allows a better correlation between the evolution of infrared signals from surface species and the gas concentration at the exit of the cell, that is, for strict Operando experimentation. The mass and heat transport phenomena were characterized using well established criteria to determine the operative limitations under steady state and fast transient experiments, e.g. during concentration-modulation excitation spectroscopy (c-MES). The performance of the cell is validated by studying the CO oxidation on a Au/CeO2 catalyst. Identification and quantification of active surface species under reaction conditions are obtained combining modulation approach with phase sensitive detection (PSD) analysis and step experiments.
Fil: Aguirre, Alejo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Collins, Sebastián Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Materia
CO OXIDATION
DRIFT MICROREACTOR
GOLD CATALYST
OPERANDO
SURFACE REACTION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/86614
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/86614
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Design of an optimized DRIFT cell/microreactor for spectrokinetic investigations of surface reaction mechanismsAguirre, AlejoCollins, Sebastián EnriqueCO OXIDATIONDRIFT MICROREACTORGOLD CATALYSTOPERANDOSURFACE REACTIONhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2A cell/microreactor is develop and fully characterized to perform diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) experiments to investigate heterogeneously catalyzed surface reactions. The experimental setup allows the simultaneous acquisition of time-resolved infrared spectra at high quality and the gas phase quantification by a mass spectrometer connected at the outlet of the cell. The cell behaves as a true plug-flow microreactor while allows the infrared radiation to sense the lateral part of the catalyst bed. The selected geometry allows a better correlation between the evolution of infrared signals from surface species and the gas concentration at the exit of the cell, that is, for strict Operando experimentation. The mass and heat transport phenomena were characterized using well established criteria to determine the operative limitations under steady state and fast transient experiments, e.g. during concentration-modulation excitation spectroscopy (c-MES). The performance of the cell is validated by studying the CO oxidation on a Au/CeO2 catalyst. Identification and quantification of active surface species under reaction conditions are obtained combining modulation approach with phase sensitive detection (PSD) analysis and step experiments.Fil: Aguirre, Alejo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaFil: Collins, Sebastián Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaElsevier B.V.2018-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/86614Aguirre, Alejo; Collins, Sebastián Enrique; Design of an optimized DRIFT cell/microreactor for spectrokinetic investigations of surface reaction mechanisms; Elsevier B.V.; Molecular Catalysis; 7-2018; 1-82468-8231CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.mcat.2018.07.003info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:33:29Zoai:ri.conicet.gov.ar:11336/86614instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:33:30.036CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Design of an optimized DRIFT cell/microreactor for spectrokinetic investigations of surface reaction mechanisms
title Design of an optimized DRIFT cell/microreactor for spectrokinetic investigations of surface reaction mechanisms
spellingShingle Design of an optimized DRIFT cell/microreactor for spectrokinetic investigations of surface reaction mechanisms
Aguirre, Alejo
CO OXIDATION
DRIFT MICROREACTOR
GOLD CATALYST
OPERANDO
SURFACE REACTION
title_short Design of an optimized DRIFT cell/microreactor for spectrokinetic investigations of surface reaction mechanisms
title_full Design of an optimized DRIFT cell/microreactor for spectrokinetic investigations of surface reaction mechanisms
title_fullStr Design of an optimized DRIFT cell/microreactor for spectrokinetic investigations of surface reaction mechanisms
title_full_unstemmed Design of an optimized DRIFT cell/microreactor for spectrokinetic investigations of surface reaction mechanisms
title_sort Design of an optimized DRIFT cell/microreactor for spectrokinetic investigations of surface reaction mechanisms
dc.creator.none.fl_str_mv Aguirre, Alejo
Collins, Sebastián Enrique
author Aguirre, Alejo
author_facet Aguirre, Alejo
Collins, Sebastián Enrique
author_role author
author2 Collins, Sebastián Enrique
author2_role author
dc.subject.none.fl_str_mv CO OXIDATION
DRIFT MICROREACTOR
GOLD CATALYST
OPERANDO
SURFACE REACTION
topic CO OXIDATION
DRIFT MICROREACTOR
GOLD CATALYST
OPERANDO
SURFACE REACTION
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv A cell/microreactor is develop and fully characterized to perform diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) experiments to investigate heterogeneously catalyzed surface reactions. The experimental setup allows the simultaneous acquisition of time-resolved infrared spectra at high quality and the gas phase quantification by a mass spectrometer connected at the outlet of the cell. The cell behaves as a true plug-flow microreactor while allows the infrared radiation to sense the lateral part of the catalyst bed. The selected geometry allows a better correlation between the evolution of infrared signals from surface species and the gas concentration at the exit of the cell, that is, for strict Operando experimentation. The mass and heat transport phenomena were characterized using well established criteria to determine the operative limitations under steady state and fast transient experiments, e.g. during concentration-modulation excitation spectroscopy (c-MES). The performance of the cell is validated by studying the CO oxidation on a Au/CeO2 catalyst. Identification and quantification of active surface species under reaction conditions are obtained combining modulation approach with phase sensitive detection (PSD) analysis and step experiments.
Fil: Aguirre, Alejo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Collins, Sebastián Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
description A cell/microreactor is develop and fully characterized to perform diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) experiments to investigate heterogeneously catalyzed surface reactions. The experimental setup allows the simultaneous acquisition of time-resolved infrared spectra at high quality and the gas phase quantification by a mass spectrometer connected at the outlet of the cell. The cell behaves as a true plug-flow microreactor while allows the infrared radiation to sense the lateral part of the catalyst bed. The selected geometry allows a better correlation between the evolution of infrared signals from surface species and the gas concentration at the exit of the cell, that is, for strict Operando experimentation. The mass and heat transport phenomena were characterized using well established criteria to determine the operative limitations under steady state and fast transient experiments, e.g. during concentration-modulation excitation spectroscopy (c-MES). The performance of the cell is validated by studying the CO oxidation on a Au/CeO2 catalyst. Identification and quantification of active surface species under reaction conditions are obtained combining modulation approach with phase sensitive detection (PSD) analysis and step experiments.
publishDate 2018
dc.date.none.fl_str_mv 2018-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/86614
Aguirre, Alejo; Collins, Sebastián Enrique; Design of an optimized DRIFT cell/microreactor for spectrokinetic investigations of surface reaction mechanisms; Elsevier B.V.; Molecular Catalysis; 7-2018; 1-8
2468-8231
CONICET Digital
CONICET
url http://hdl.handle.net/11336/86614
identifier_str_mv Aguirre, Alejo; Collins, Sebastián Enrique; Design of an optimized DRIFT cell/microreactor for spectrokinetic investigations of surface reaction mechanisms; Elsevier B.V.; Molecular Catalysis; 7-2018; 1-8
2468-8231
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.mcat.2018.07.003
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
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:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844613029476433920
score 13.070432

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