Effect of steaming treatment in the structure and reactivity of FCC catalysts

Autores
Tonetto, Gabriela Marta; Ferreira, María Luján; Atias, J. A.; De Lasa, H. I.
Año de publicación
2006
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The shape selectivity properties of USY zeolite crystallites is discussed, and is based on catalyst characterization, molecular simulation, catalytic experiments of model compounds and kinetic modeling. Typical FCC catalysts are prepared with different HY crystallite sizes (0.4 and 0.9 μm), and are structurally and chemically characterized with nitrogen and argon adsorption/desorption isotherms, temperature-programmed desorption of ammonia and infrared spectroscopy. Catalyst characterization is carried out before and after the hydrothermal treatment (steaming) of the catalyst. Pore-size distribution analysis demonstrates that the effect of the steaming treatment in the Y zeolite results in window enlargement. The influences of structural changes of steam treatment on reactivity is evaluated with the catalytic conversion of 1,2,4-trimethylbenzene in a novel fluidized CREC riser simulator. It is proven that steaming enlarges zeolite windows and influence the 1,2,4-TMB product distribution. A slight modification of the window diameter is proven to significantly affect the adsorbent-adsorbate interactions. Focus is particularly given to the catalyst selectivity toward the tetramethylbenzene isomers, and the "transition-state shape selectivity" is proven to be controlling the product distribution and is consistent with molecular mechanics calculations.
Fil: Tonetto, Gabriela Marta. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Ferreira, María Luján. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Atias, J. A.. Western University; Canadá
Fil: De Lasa, H. I.. Western University; Canadá
Materia
Kinetic Modeling
Molecular Simulation
Shape Selectivity
Steaming Treatment
Zeolite
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:11336/36744
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/36744
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Effect of steaming treatment in the structure and reactivity of FCC catalystsTonetto, Gabriela MartaFerreira, María LujánAtias, J. A.De Lasa, H. I.Kinetic ModelingMolecular SimulationShape SelectivitySteaming TreatmentZeolitehttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2The shape selectivity properties of USY zeolite crystallites is discussed, and is based on catalyst characterization, molecular simulation, catalytic experiments of model compounds and kinetic modeling. Typical FCC catalysts are prepared with different HY crystallite sizes (0.4 and 0.9 μm), and are structurally and chemically characterized with nitrogen and argon adsorption/desorption isotherms, temperature-programmed desorption of ammonia and infrared spectroscopy. Catalyst characterization is carried out before and after the hydrothermal treatment (steaming) of the catalyst. Pore-size distribution analysis demonstrates that the effect of the steaming treatment in the Y zeolite results in window enlargement. The influences of structural changes of steam treatment on reactivity is evaluated with the catalytic conversion of 1,2,4-trimethylbenzene in a novel fluidized CREC riser simulator. It is proven that steaming enlarges zeolite windows and influence the 1,2,4-TMB product distribution. A slight modification of the window diameter is proven to significantly affect the adsorbent-adsorbate interactions. Focus is particularly given to the catalyst selectivity toward the tetramethylbenzene isomers, and the "transition-state shape selectivity" is proven to be controlling the product distribution and is consistent with molecular mechanics calculations.Fil: Tonetto, Gabriela Marta. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Ferreira, María Luján. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Atias, J. A.. Western University; CanadáFil: De Lasa, H. I.. Western University; CanadáJohn Wiley & Sons Inc2006-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/36744Tonetto, Gabriela Marta; Ferreira, María Luján; Atias, J. A.; De Lasa, H. I.; Effect of steaming treatment in the structure and reactivity of FCC catalysts; John Wiley & Sons Inc; Aiche Journal; 52; 2; 2-2006; 754-7680001-1541CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/aic.10629/abstractinfo:eu-repo/semantics/altIdentifier/doi/10.1002/aic.10629info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:40:41Zoai:ri.conicet.gov.ar:11336/36744instacron: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:34982025-10-15 14:40:41.234CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effect of steaming treatment in the structure and reactivity of FCC catalysts
title Effect of steaming treatment in the structure and reactivity of FCC catalysts
spellingShingle Effect of steaming treatment in the structure and reactivity of FCC catalysts
Tonetto, Gabriela Marta
Kinetic Modeling
Molecular Simulation
Shape Selectivity
Steaming Treatment
Zeolite
title_short Effect of steaming treatment in the structure and reactivity of FCC catalysts
title_full Effect of steaming treatment in the structure and reactivity of FCC catalysts
title_fullStr Effect of steaming treatment in the structure and reactivity of FCC catalysts
title_full_unstemmed Effect of steaming treatment in the structure and reactivity of FCC catalysts
title_sort Effect of steaming treatment in the structure and reactivity of FCC catalysts
dc.creator.none.fl_str_mv Tonetto, Gabriela Marta
Ferreira, María Luján
Atias, J. A.
De Lasa, H. I.
author Tonetto, Gabriela Marta
author_facet Tonetto, Gabriela Marta
Ferreira, María Luján
Atias, J. A.
De Lasa, H. I.
author_role author
author2 Ferreira, María Luján
Atias, J. A.
De Lasa, H. I.
author2_role author
author
author
dc.subject.none.fl_str_mv Kinetic Modeling
Molecular Simulation
Shape Selectivity
Steaming Treatment
Zeolite
topic Kinetic Modeling
Molecular Simulation
Shape Selectivity
Steaming Treatment
Zeolite
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The shape selectivity properties of USY zeolite crystallites is discussed, and is based on catalyst characterization, molecular simulation, catalytic experiments of model compounds and kinetic modeling. Typical FCC catalysts are prepared with different HY crystallite sizes (0.4 and 0.9 μm), and are structurally and chemically characterized with nitrogen and argon adsorption/desorption isotherms, temperature-programmed desorption of ammonia and infrared spectroscopy. Catalyst characterization is carried out before and after the hydrothermal treatment (steaming) of the catalyst. Pore-size distribution analysis demonstrates that the effect of the steaming treatment in the Y zeolite results in window enlargement. The influences of structural changes of steam treatment on reactivity is evaluated with the catalytic conversion of 1,2,4-trimethylbenzene in a novel fluidized CREC riser simulator. It is proven that steaming enlarges zeolite windows and influence the 1,2,4-TMB product distribution. A slight modification of the window diameter is proven to significantly affect the adsorbent-adsorbate interactions. Focus is particularly given to the catalyst selectivity toward the tetramethylbenzene isomers, and the "transition-state shape selectivity" is proven to be controlling the product distribution and is consistent with molecular mechanics calculations.
Fil: Tonetto, Gabriela Marta. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Ferreira, María Luján. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Atias, J. A.. Western University; Canadá
Fil: De Lasa, H. I.. Western University; Canadá
description The shape selectivity properties of USY zeolite crystallites is discussed, and is based on catalyst characterization, molecular simulation, catalytic experiments of model compounds and kinetic modeling. Typical FCC catalysts are prepared with different HY crystallite sizes (0.4 and 0.9 μm), and are structurally and chemically characterized with nitrogen and argon adsorption/desorption isotherms, temperature-programmed desorption of ammonia and infrared spectroscopy. Catalyst characterization is carried out before and after the hydrothermal treatment (steaming) of the catalyst. Pore-size distribution analysis demonstrates that the effect of the steaming treatment in the Y zeolite results in window enlargement. The influences of structural changes of steam treatment on reactivity is evaluated with the catalytic conversion of 1,2,4-trimethylbenzene in a novel fluidized CREC riser simulator. It is proven that steaming enlarges zeolite windows and influence the 1,2,4-TMB product distribution. A slight modification of the window diameter is proven to significantly affect the adsorbent-adsorbate interactions. Focus is particularly given to the catalyst selectivity toward the tetramethylbenzene isomers, and the "transition-state shape selectivity" is proven to be controlling the product distribution and is consistent with molecular mechanics calculations.
publishDate 2006
dc.date.none.fl_str_mv 2006-02
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/11336/36744
Tonetto, Gabriela Marta; Ferreira, María Luján; Atias, J. A.; De Lasa, H. I.; Effect of steaming treatment in the structure and reactivity of FCC catalysts; John Wiley & Sons Inc; Aiche Journal; 52; 2; 2-2006; 754-768
0001-1541
CONICET Digital
CONICET
url http://hdl.handle.net/11336/36744
identifier_str_mv Tonetto, Gabriela Marta; Ferreira, María Luján; Atias, J. A.; De Lasa, H. I.; Effect of steaming treatment in the structure and reactivity of FCC catalysts; John Wiley & Sons Inc; Aiche Journal; 52; 2; 2-2006; 754-768
0001-1541
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/aic.10629/abstract
info:eu-repo/semantics/altIdentifier/doi/10.1002/aic.10629
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
dc.publisher.none.fl_str_mv John Wiley & Sons Inc
publisher.none.fl_str_mv John Wiley & Sons Inc
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_ 1846082899267289088
score 13.22299

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