Trickle bed reactors: Effect of liquid flow modulation on catalytic activity

The effect of slow ON-OFF liquid flow modulation on the oxidation of aqueous solutions of ethanol using a 0.5% Pd / Al2 O3 commercial egg-shell catalyst was investigated in a laboratory trickle bed reactor (TBR). In this mode of operation, the catalyst was cyclically exposed to oxidative and reducti...

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Autores: Ayude, María Alejandra, Cechini, Jorge Omar, Cassanello Fernandez, Miryam Celeste, Martinez, Osvaldo Miguel, Haure, Patricia Monica
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2008
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/54042
Acceso en línea:http://hdl.handle.net/11336/54042
Access Level:acceso abierto
Palabra clave:Alcohol Oxidation
Catalyst Activation
Catalyst Deactivation
Liquid Flow Modulation
Multiphase Reactors
Stability
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
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oai_identifier_str oai:ri.conicet.gov.ar:11336/54042
network_acronym_str AR
network_name_str Argentina
repository_id_str
dc.title.none.fl_str_mv Trickle bed reactors: Effect of liquid flow modulation on catalytic activity
title Trickle bed reactors: Effect of liquid flow modulation on catalytic activity
spellingShingle Trickle bed reactors: Effect of liquid flow modulation on catalytic activity
Ayude, María Alejandra
Alcohol Oxidation
Catalyst Activation
Catalyst Deactivation
Liquid Flow Modulation
Multiphase Reactors
Stability
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
title_short Trickle bed reactors: Effect of liquid flow modulation on catalytic activity
title_full Trickle bed reactors: Effect of liquid flow modulation on catalytic activity
title_fullStr Trickle bed reactors: Effect of liquid flow modulation on catalytic activity
title_full_unstemmed Trickle bed reactors: Effect of liquid flow modulation on catalytic activity
title_sort Trickle bed reactors: Effect of liquid flow modulation on catalytic activity
dc.creator.none.fl_str_mv Ayude, María Alejandra
Cechini, Jorge Omar
Cassanello Fernandez, Miryam Celeste
Martinez, Osvaldo Miguel
Haure, Patricia Monica
author Ayude, María Alejandra
author_facet Ayude, María Alejandra
Cechini, Jorge Omar
Cassanello Fernandez, Miryam Celeste
Martinez, Osvaldo Miguel
Haure, Patricia Monica
author_role author
author2 Cechini, Jorge Omar
Cassanello Fernandez, Miryam Celeste
Martinez, Osvaldo Miguel
Haure, Patricia Monica
author2_role author
author
author
author
dc.subject.none.fl_str_mv Alcohol Oxidation
Catalyst Activation
Catalyst Deactivation
Liquid Flow Modulation
Multiphase Reactors
Stability
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
topic Alcohol Oxidation
Catalyst Activation
Catalyst Deactivation
Liquid Flow Modulation
Multiphase Reactors
Stability
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
description The effect of slow ON-OFF liquid flow modulation on the oxidation of aqueous solutions of ethanol using a 0.5% Pd / Al2 O3 commercial egg-shell catalyst was investigated in a laboratory trickle bed reactor (TBR). In this mode of operation, the catalyst was cyclically exposed to oxidative and reductive environments. The study was carried out under different gas and liquid flow rates, cycle periods and splits. Cycling results have been compared with the steady-state experiments performed at the corresponding average liquid flow rate. Significant improvements over the continuous operation were obtained when the catalyst was exposed to a short surplus of oxygen (to minimize deactivation by overoxidation in the kinetic regime) after a longer time of working in the mass transfer limited regime. According to the results presented here, it is recommended to work with high liquid flow rates and moderate gas flow rates to ensure complete wetting of the catalyst during the ON cycle and to minimize the overoxidation process during the OFF cycle. © 2008 Elsevier Ltd. All rights reserved.
publishDate 2008
dc.date.none.fl_str_mv 2008-10
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/11336/54042
Ayude, María Alejandra; Cechini, Jorge Omar; Cassanello Fernandez, Miryam Celeste; Martinez, Osvaldo Miguel; Haure, Patricia Monica; Trickle bed reactors: Effect of liquid flow modulation on catalytic activity; Pergamon-Elsevier Science Ltd; Chemical Engineering Science; 63; 20; 10-2008; 4969-4973
0009-2509
CONICET Digital
CONICET
url http://hdl.handle.net/11336/54042
identifier_str_mv Ayude, María Alejandra; Cechini, Jorge Omar; Cassanello Fernandez, Miryam Celeste; Martinez, Osvaldo Miguel; Haure, Patricia Monica; Trickle bed reactors: Effect of liquid flow modulation on catalytic activity; Pergamon-Elsevier Science Ltd; Chemical Engineering Science; 63; 20; 10-2008; 4969-4973
0009-2509
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.ces.2008.07.024
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0009250908004016
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
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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_ 1799194973764059136
spelling Trickle bed reactors: Effect of liquid flow modulation on catalytic activityAyude, María AlejandraCechini, Jorge OmarCassanello Fernandez, Miryam CelesteMartinez, Osvaldo MiguelHaure, Patricia MonicaAlcohol OxidationCatalyst ActivationCatalyst DeactivationLiquid Flow ModulationMultiphase ReactorsStabilityhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2The effect of slow ON-OFF liquid flow modulation on the oxidation of aqueous solutions of ethanol using a 0.5% Pd / Al2 O3 commercial egg-shell catalyst was investigated in a laboratory trickle bed reactor (TBR). In this mode of operation, the catalyst was cyclically exposed to oxidative and reductive environments. The study was carried out under different gas and liquid flow rates, cycle periods and splits. Cycling results have been compared with the steady-state experiments performed at the corresponding average liquid flow rate. Significant improvements over the continuous operation were obtained when the catalyst was exposed to a short surplus of oxygen (to minimize deactivation by overoxidation in the kinetic regime) after a longer time of working in the mass transfer limited regime. According to the results presented here, it is recommended to work with high liquid flow rates and moderate gas flow rates to ensure complete wetting of the catalyst during the ON cycle and to minimize the overoxidation process during the OFF cycle. © 2008 Elsevier Ltd. All rights reserved.Fil: Ayude, María Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Cechini, Jorge Omar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Cassanello Fernandez, Miryam Celeste. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Industrias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Martinez, Osvaldo Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaFil: Haure, Patricia Monica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaPergamon-Elsevier Science Ltd2008-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/54042Ayude, María Alejandra; Cechini, Jorge Omar; Cassanello Fernandez, Miryam Celeste; Martinez, Osvaldo Miguel; Haure, Patricia Monica; Trickle bed reactors: Effect of liquid flow modulation on catalytic activity; Pergamon-Elsevier Science Ltd; Chemical Engineering Science; 63; 20; 10-2008; 4969-49730009-2509CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.ces.2008.07.024info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0009250908004016info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:40:23Zoai:ri.conicet.gov.ar:11336/54042instacron: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:34982024-05-08 13:40:23.371CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
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