H-ZSM-11 and Zn-ZSM-11 zeolites and their applications in the catalytic transformation of LDPE

Autores
Renzini, Maria Soledad; Sedran, Ulises Anselmo; Pierella, Liliana Beatriz
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Low density polyethylene was converted into hydrocarbons over Zn- and H-ZSM-11 zeolite catalysts in a fixed-bed reactor during 20 and 60 min reaction time, 0.5 and 2.0 polymer to catalyst mass ratio at 500 °C. The zeolites were synthesized by conventional techniques and characterized by XRD, pyridine FTIR and N2 adsorption. The adsorbed pyridine spectra demonstrated that new Lewis sites were formed after Zn exchange, and that the relationship between Lewis and Brönsted sites in the Zn-ZSM-11 zeolite (3.53) was much higher than that in the H-ZSM-11 zeolite (0.09). Thermal analyses confirmed that the temperature of decomposition of the polymer can be decreased in as much as about 145 °C when the catalysts were added. As compared to the thermal degradation, the catalytic conversion produced less solid residues and much higher amounts of gas and liquid hydrocarbons. The catalysts showed different yield profiles: the H-ZSM-11 zeolite yielded more gases, while the Zn-ZSM-11 zeolite yielded more liquid products. Notably over Zn-ZSM-11 zeolite, these liquid products were mainly aromatic, and depending on experimental conditions (higher temperature, longer reaction time, smaller polymer/catalyst relationship), aromatic selectivity could be increased to almost 100%.
Fil: Renzini, Maria Soledad. Universidad Nacional de Córdoba; Argentina
Fil: Sedran, Ulises Anselmo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Fil: Pierella, Liliana Beatriz. Universidad Nacional de Córdoba; Argentina
Materia
Ldpe
Thermal And Catalytic Degradation
Zsm-11
Aromatics
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:11336/57060
Acceder
id CONICETDig_e2242b3245dc87d1d19a39d733d25bd6
oai_identifier_str oai:ri.conicet.gov.ar:11336/57060
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling H-ZSM-11 and Zn-ZSM-11 zeolites and their applications in the catalytic transformation of LDPERenzini, Maria SoledadSedran, Ulises AnselmoPierella, Liliana BeatrizLdpeThermal And Catalytic DegradationZsm-11Aromaticshttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Low density polyethylene was converted into hydrocarbons over Zn- and H-ZSM-11 zeolite catalysts in a fixed-bed reactor during 20 and 60 min reaction time, 0.5 and 2.0 polymer to catalyst mass ratio at 500 °C. The zeolites were synthesized by conventional techniques and characterized by XRD, pyridine FTIR and N2 adsorption. The adsorbed pyridine spectra demonstrated that new Lewis sites were formed after Zn exchange, and that the relationship between Lewis and Brönsted sites in the Zn-ZSM-11 zeolite (3.53) was much higher than that in the H-ZSM-11 zeolite (0.09). Thermal analyses confirmed that the temperature of decomposition of the polymer can be decreased in as much as about 145 °C when the catalysts were added. As compared to the thermal degradation, the catalytic conversion produced less solid residues and much higher amounts of gas and liquid hydrocarbons. The catalysts showed different yield profiles: the H-ZSM-11 zeolite yielded more gases, while the Zn-ZSM-11 zeolite yielded more liquid products. Notably over Zn-ZSM-11 zeolite, these liquid products were mainly aromatic, and depending on experimental conditions (higher temperature, longer reaction time, smaller polymer/catalyst relationship), aromatic selectivity could be increased to almost 100%.Fil: Renzini, Maria Soledad. Universidad Nacional de Córdoba; ArgentinaFil: Sedran, Ulises Anselmo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; ArgentinaFil: Pierella, Liliana Beatriz. Universidad Nacional de Córdoba; ArgentinaElsevier Science2009-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/57060Renzini, Maria Soledad; Sedran, Ulises Anselmo; Pierella, Liliana Beatriz; H-ZSM-11 and Zn-ZSM-11 zeolites and their applications in the catalytic transformation of LDPE; Elsevier Science; Journal of Analytical and Applied Pyrolysis; 86; 1; 9-2009; 215-2200165-2370CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jaap.2009.06.008info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:02:37Zoai:ri.conicet.gov.ar:11336/57060instacron: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:34982025-09-03 10:02:38.079CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv H-ZSM-11 and Zn-ZSM-11 zeolites and their applications in the catalytic transformation of LDPE
title H-ZSM-11 and Zn-ZSM-11 zeolites and their applications in the catalytic transformation of LDPE
spellingShingle H-ZSM-11 and Zn-ZSM-11 zeolites and their applications in the catalytic transformation of LDPE
Renzini, Maria Soledad
Ldpe
Thermal And Catalytic Degradation
Zsm-11
Aromatics
title_short H-ZSM-11 and Zn-ZSM-11 zeolites and their applications in the catalytic transformation of LDPE
title_full H-ZSM-11 and Zn-ZSM-11 zeolites and their applications in the catalytic transformation of LDPE
title_fullStr H-ZSM-11 and Zn-ZSM-11 zeolites and their applications in the catalytic transformation of LDPE
title_full_unstemmed H-ZSM-11 and Zn-ZSM-11 zeolites and their applications in the catalytic transformation of LDPE
title_sort H-ZSM-11 and Zn-ZSM-11 zeolites and their applications in the catalytic transformation of LDPE
dc.creator.none.fl_str_mv Renzini, Maria Soledad
Sedran, Ulises Anselmo
Pierella, Liliana Beatriz
author Renzini, Maria Soledad
author_facet Renzini, Maria Soledad
Sedran, Ulises Anselmo
Pierella, Liliana Beatriz
author_role author
author2 Sedran, Ulises Anselmo
Pierella, Liliana Beatriz
author2_role author
author
dc.subject.none.fl_str_mv Ldpe
Thermal And Catalytic Degradation
Zsm-11
Aromatics
topic Ldpe
Thermal And Catalytic Degradation
Zsm-11
Aromatics
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Low density polyethylene was converted into hydrocarbons over Zn- and H-ZSM-11 zeolite catalysts in a fixed-bed reactor during 20 and 60 min reaction time, 0.5 and 2.0 polymer to catalyst mass ratio at 500 °C. The zeolites were synthesized by conventional techniques and characterized by XRD, pyridine FTIR and N2 adsorption. The adsorbed pyridine spectra demonstrated that new Lewis sites were formed after Zn exchange, and that the relationship between Lewis and Brönsted sites in the Zn-ZSM-11 zeolite (3.53) was much higher than that in the H-ZSM-11 zeolite (0.09). Thermal analyses confirmed that the temperature of decomposition of the polymer can be decreased in as much as about 145 °C when the catalysts were added. As compared to the thermal degradation, the catalytic conversion produced less solid residues and much higher amounts of gas and liquid hydrocarbons. The catalysts showed different yield profiles: the H-ZSM-11 zeolite yielded more gases, while the Zn-ZSM-11 zeolite yielded more liquid products. Notably over Zn-ZSM-11 zeolite, these liquid products were mainly aromatic, and depending on experimental conditions (higher temperature, longer reaction time, smaller polymer/catalyst relationship), aromatic selectivity could be increased to almost 100%.
Fil: Renzini, Maria Soledad. Universidad Nacional de Córdoba; Argentina
Fil: Sedran, Ulises Anselmo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Fil: Pierella, Liliana Beatriz. Universidad Nacional de Córdoba; Argentina
description Low density polyethylene was converted into hydrocarbons over Zn- and H-ZSM-11 zeolite catalysts in a fixed-bed reactor during 20 and 60 min reaction time, 0.5 and 2.0 polymer to catalyst mass ratio at 500 °C. The zeolites were synthesized by conventional techniques and characterized by XRD, pyridine FTIR and N2 adsorption. The adsorbed pyridine spectra demonstrated that new Lewis sites were formed after Zn exchange, and that the relationship between Lewis and Brönsted sites in the Zn-ZSM-11 zeolite (3.53) was much higher than that in the H-ZSM-11 zeolite (0.09). Thermal analyses confirmed that the temperature of decomposition of the polymer can be decreased in as much as about 145 °C when the catalysts were added. As compared to the thermal degradation, the catalytic conversion produced less solid residues and much higher amounts of gas and liquid hydrocarbons. The catalysts showed different yield profiles: the H-ZSM-11 zeolite yielded more gases, while the Zn-ZSM-11 zeolite yielded more liquid products. Notably over Zn-ZSM-11 zeolite, these liquid products were mainly aromatic, and depending on experimental conditions (higher temperature, longer reaction time, smaller polymer/catalyst relationship), aromatic selectivity could be increased to almost 100%.
publishDate 2009
dc.date.none.fl_str_mv 2009-09
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/11336/57060
Renzini, Maria Soledad; Sedran, Ulises Anselmo; Pierella, Liliana Beatriz; H-ZSM-11 and Zn-ZSM-11 zeolites and their applications in the catalytic transformation of LDPE; Elsevier Science; Journal of Analytical and Applied Pyrolysis; 86; 1; 9-2009; 215-220
0165-2370
CONICET Digital
CONICET
url http://hdl.handle.net/11336/57060
identifier_str_mv Renzini, Maria Soledad; Sedran, Ulises Anselmo; Pierella, Liliana Beatriz; H-ZSM-11 and Zn-ZSM-11 zeolites and their applications in the catalytic transformation of LDPE; Elsevier Science; Journal of Analytical and Applied Pyrolysis; 86; 1; 9-2009; 215-220
0165-2370
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.jaap.2009.06.008
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 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
_version_ 1842269766709936128
score 12.885934

Publicaciones similares