Tungsten promoted ammonium and potassium ferrierite: deactivation during the skeletal isomerization of linear butenes
- Autores
- Finelli, Zunilda Rosa; Querini, Carlos Alberto; Figoli, Nora Susana; Comelli, Raul Alberto
- Año de publicación
- 2001
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Deactivation of tungsten promoted ferrierite during the skeletal isomerization of 1-butene at 400°C, atmospheric pressure and 0.15 atm 1-butene partial pressure was studied. Both potassium and ammonium ferrierites were impregnated with tungsten species using either tungstic acid or ammonium metatungstate as precursors, reaching loadings between 1.4 and 7.3%. After the tungsten addition on both ferrierite samples, neither the acid strength distribution nor the total acidity corresponding to the unpromoted materials change significantly. The strongest acid sites present on the ammonium ferrierite with and without tungsten and absent on the tungsten promoted potassium ferrierite, are responsible for the side-reactions. Deactivation of tungsten promoted ferrierites shows differences. Ammonium ferrierite with and without tungsten reach similar carbon contents, being larger than the ones obtained on potassium ferrierite with and without tungsten. In all cases, the carbonaceous deposit shows both olefinic and aromatic species, the proportion depending on the samples. Coke on tungsten promoted potassium ferrierite shows mainly an olefinic nature, while the deposit formed on tungsten promoted ammonium ferrierite has a more aromatic character. For the latter samples, the complete coke removal needs higher temperatures. The strength of acid sites determines not only the carbonaceous deposit amount but also its degree of condensation. The low isobutene selectivity at short time-on-stream (TOS) is avoided by starting the 1-butene feed with the catalytic bed at 200°C and then increasing temperature up to 400°C. It can be considered that a strong adsorption of reactant molecules takes place at low temperatures, thus deactivating the strongest acid sites.
Fil: Finelli, Zunilda Rosa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Querini, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Figoli, Nora Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Comelli, Raul Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina - Materia
-
Skeletal Isomerization
Isobutene
Tungsten/Ferrierite
Deactivation
Coke Nature - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/40099
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3498 |
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Tungsten promoted ammonium and potassium ferrierite: deactivation during the skeletal isomerization of linear butenesFinelli, Zunilda RosaQuerini, Carlos AlbertoFigoli, Nora SusanaComelli, Raul AlbertoSkeletal IsomerizationIsobuteneTungsten/FerrieriteDeactivationCoke Naturehttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Deactivation of tungsten promoted ferrierite during the skeletal isomerization of 1-butene at 400°C, atmospheric pressure and 0.15 atm 1-butene partial pressure was studied. Both potassium and ammonium ferrierites were impregnated with tungsten species using either tungstic acid or ammonium metatungstate as precursors, reaching loadings between 1.4 and 7.3%. After the tungsten addition on both ferrierite samples, neither the acid strength distribution nor the total acidity corresponding to the unpromoted materials change significantly. The strongest acid sites present on the ammonium ferrierite with and without tungsten and absent on the tungsten promoted potassium ferrierite, are responsible for the side-reactions. Deactivation of tungsten promoted ferrierites shows differences. Ammonium ferrierite with and without tungsten reach similar carbon contents, being larger than the ones obtained on potassium ferrierite with and without tungsten. In all cases, the carbonaceous deposit shows both olefinic and aromatic species, the proportion depending on the samples. Coke on tungsten promoted potassium ferrierite shows mainly an olefinic nature, while the deposit formed on tungsten promoted ammonium ferrierite has a more aromatic character. For the latter samples, the complete coke removal needs higher temperatures. The strength of acid sites determines not only the carbonaceous deposit amount but also its degree of condensation. The low isobutene selectivity at short time-on-stream (TOS) is avoided by starting the 1-butene feed with the catalytic bed at 200°C and then increasing temperature up to 400°C. It can be considered that a strong adsorption of reactant molecules takes place at low temperatures, thus deactivating the strongest acid sites.Fil: Finelli, Zunilda Rosa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Querini, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Figoli, Nora Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Comelli, Raul Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaElsevier Science2001-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/40099Finelli, Zunilda Rosa; Querini, Carlos Alberto; Figoli, Nora Susana; Comelli, Raul Alberto; Tungsten promoted ammonium and potassium ferrierite: deactivation during the skeletal isomerization of linear butenes; Elsevier Science; Applied Catalysis A: General; 216; 1-2; 8-2001; 91-1010926-860XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/S0926-860X(01)00545-2info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0926860X01005452info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:20:55Zoai:ri.conicet.gov.ar:11336/40099instacron: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 10:20:55.723CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Tungsten promoted ammonium and potassium ferrierite: deactivation during the skeletal isomerization of linear butenes |
title |
Tungsten promoted ammonium and potassium ferrierite: deactivation during the skeletal isomerization of linear butenes |
spellingShingle |
Tungsten promoted ammonium and potassium ferrierite: deactivation during the skeletal isomerization of linear butenes Finelli, Zunilda Rosa Skeletal Isomerization Isobutene Tungsten/Ferrierite Deactivation Coke Nature |
title_short |
Tungsten promoted ammonium and potassium ferrierite: deactivation during the skeletal isomerization of linear butenes |
title_full |
Tungsten promoted ammonium and potassium ferrierite: deactivation during the skeletal isomerization of linear butenes |
title_fullStr |
Tungsten promoted ammonium and potassium ferrierite: deactivation during the skeletal isomerization of linear butenes |
title_full_unstemmed |
Tungsten promoted ammonium and potassium ferrierite: deactivation during the skeletal isomerization of linear butenes |
title_sort |
Tungsten promoted ammonium and potassium ferrierite: deactivation during the skeletal isomerization of linear butenes |
dc.creator.none.fl_str_mv |
Finelli, Zunilda Rosa Querini, Carlos Alberto Figoli, Nora Susana Comelli, Raul Alberto |
author |
Finelli, Zunilda Rosa |
author_facet |
Finelli, Zunilda Rosa Querini, Carlos Alberto Figoli, Nora Susana Comelli, Raul Alberto |
author_role |
author |
author2 |
Querini, Carlos Alberto Figoli, Nora Susana Comelli, Raul Alberto |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Skeletal Isomerization Isobutene Tungsten/Ferrierite Deactivation Coke Nature |
topic |
Skeletal Isomerization Isobutene Tungsten/Ferrierite Deactivation Coke Nature |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Deactivation of tungsten promoted ferrierite during the skeletal isomerization of 1-butene at 400°C, atmospheric pressure and 0.15 atm 1-butene partial pressure was studied. Both potassium and ammonium ferrierites were impregnated with tungsten species using either tungstic acid or ammonium metatungstate as precursors, reaching loadings between 1.4 and 7.3%. After the tungsten addition on both ferrierite samples, neither the acid strength distribution nor the total acidity corresponding to the unpromoted materials change significantly. The strongest acid sites present on the ammonium ferrierite with and without tungsten and absent on the tungsten promoted potassium ferrierite, are responsible for the side-reactions. Deactivation of tungsten promoted ferrierites shows differences. Ammonium ferrierite with and without tungsten reach similar carbon contents, being larger than the ones obtained on potassium ferrierite with and without tungsten. In all cases, the carbonaceous deposit shows both olefinic and aromatic species, the proportion depending on the samples. Coke on tungsten promoted potassium ferrierite shows mainly an olefinic nature, while the deposit formed on tungsten promoted ammonium ferrierite has a more aromatic character. For the latter samples, the complete coke removal needs higher temperatures. The strength of acid sites determines not only the carbonaceous deposit amount but also its degree of condensation. The low isobutene selectivity at short time-on-stream (TOS) is avoided by starting the 1-butene feed with the catalytic bed at 200°C and then increasing temperature up to 400°C. It can be considered that a strong adsorption of reactant molecules takes place at low temperatures, thus deactivating the strongest acid sites. Fil: Finelli, Zunilda Rosa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina Fil: Querini, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina Fil: Figoli, Nora Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina Fil: Comelli, Raul Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina |
description |
Deactivation of tungsten promoted ferrierite during the skeletal isomerization of 1-butene at 400°C, atmospheric pressure and 0.15 atm 1-butene partial pressure was studied. Both potassium and ammonium ferrierites were impregnated with tungsten species using either tungstic acid or ammonium metatungstate as precursors, reaching loadings between 1.4 and 7.3%. After the tungsten addition on both ferrierite samples, neither the acid strength distribution nor the total acidity corresponding to the unpromoted materials change significantly. The strongest acid sites present on the ammonium ferrierite with and without tungsten and absent on the tungsten promoted potassium ferrierite, are responsible for the side-reactions. Deactivation of tungsten promoted ferrierites shows differences. Ammonium ferrierite with and without tungsten reach similar carbon contents, being larger than the ones obtained on potassium ferrierite with and without tungsten. In all cases, the carbonaceous deposit shows both olefinic and aromatic species, the proportion depending on the samples. Coke on tungsten promoted potassium ferrierite shows mainly an olefinic nature, while the deposit formed on tungsten promoted ammonium ferrierite has a more aromatic character. For the latter samples, the complete coke removal needs higher temperatures. The strength of acid sites determines not only the carbonaceous deposit amount but also its degree of condensation. The low isobutene selectivity at short time-on-stream (TOS) is avoided by starting the 1-butene feed with the catalytic bed at 200°C and then increasing temperature up to 400°C. It can be considered that a strong adsorption of reactant molecules takes place at low temperatures, thus deactivating the strongest acid sites. |
publishDate |
2001 |
dc.date.none.fl_str_mv |
2001-08 |
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/11336/40099 Finelli, Zunilda Rosa; Querini, Carlos Alberto; Figoli, Nora Susana; Comelli, Raul Alberto; Tungsten promoted ammonium and potassium ferrierite: deactivation during the skeletal isomerization of linear butenes; Elsevier Science; Applied Catalysis A: General; 216; 1-2; 8-2001; 91-101 0926-860X CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/40099 |
identifier_str_mv |
Finelli, Zunilda Rosa; Querini, Carlos Alberto; Figoli, Nora Susana; Comelli, Raul Alberto; Tungsten promoted ammonium and potassium ferrierite: deactivation during the skeletal isomerization of linear butenes; Elsevier Science; Applied Catalysis A: General; 216; 1-2; 8-2001; 91-101 0926-860X 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/S0926-860X(01)00545-2 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0926860X01005452 |
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 |
dc.publisher.none.fl_str_mv |
Elsevier Science |
publisher.none.fl_str_mv |
Elsevier Science |
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 |
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1844614194390892544 |
score |
13.070432 |