Catalytic cracking of HDPE over hybrid zeolitic-mesoporous materials

The potential application of hybrid ZSM-5/MCM-41 materials for the catalytic degradation of high density polyethylene (HDPE) has been investigated and compared with the behavior of a standard Al-MCM-41 sample. Hybrid zeolitic-mesoporous materials were prepared from zeolite seeds obtained in differen...

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Detalles Bibliográficos
Autores: García-Muñoz, Rafael A., Serrano, D.P., Otero, D.
Tipo de recurso: artículo
Fecha de publicación:2005
País:España
Institución:Universidad Rey Juan Carlos
Repositorio:BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
OAI Identifier:oai:burjcdigital.urjc.es:10115/3845
Acceso en línea:http://hdl.handle.net/10115/3845
Access Level:acceso abierto
Palabra clave:Medio Ambiente
23 Química
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spelling Catalytic cracking of HDPE over hybrid zeolitic-mesoporous materialsGarcía-Muñoz, Rafael A.Serrano, D.P.Otero, D.Medio Ambiente23 QuímicaThe potential application of hybrid ZSM-5/MCM-41 materials for the catalytic degradation of high density polyethylene (HDPE) has been investigated and compared with the behavior of a standard Al-MCM-41 sample. Hybrid zeolitic-mesoporous materials were prepared from zeolite seeds obtained in different stages of ZSM-5 crystallization by variation of the synthesis time. The seeds were assembled around cetyltrimethyl ammonium bromide (CTAB) micelles to obtain hybrid materials having a combination of both zeolitic and mesostructured features. The samples so obtained have exhibited remarkable catalytic activity in the HDPE cracking despite the low temperatures (380 ºC) and catalyst loadings used (plastic/catalyst mass ratio =100), leading to polyolefin conversions higher than Al-MCM-41. The product distribution observed with the hybrid materials is closer to that typically obtained in the HDPE cracking over HZSM-5 zeolite, with a high proportion of light hydrocarbons. Moreover, the products present a high content of C2-C5 olefins, which is an interesting result regarding its possible use as raw chemicals. Increasing the zeolitic crystallinity of the hybrid materials causes an enhancement in the production of heavier products with boiling points within the gasoline range.Tecnología Química y AmbientalELSEVIER201020102005info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10115/3845reponame:BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlosinstname:Universidad Rey Juan CarlosInglésAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:burjcdigital.urjc.es:10115/38452026-06-24T12:48:17Z
dc.title.none.fl_str_mv Catalytic cracking of HDPE over hybrid zeolitic-mesoporous materials
title Catalytic cracking of HDPE over hybrid zeolitic-mesoporous materials
spellingShingle Catalytic cracking of HDPE over hybrid zeolitic-mesoporous materials
García-Muñoz, Rafael A.
Medio Ambiente
23 Química
title_short Catalytic cracking of HDPE over hybrid zeolitic-mesoporous materials
title_full Catalytic cracking of HDPE over hybrid zeolitic-mesoporous materials
title_fullStr Catalytic cracking of HDPE over hybrid zeolitic-mesoporous materials
title_full_unstemmed Catalytic cracking of HDPE over hybrid zeolitic-mesoporous materials
title_sort Catalytic cracking of HDPE over hybrid zeolitic-mesoporous materials
dc.creator.none.fl_str_mv García-Muñoz, Rafael A.
Serrano, D.P.
Otero, D.
author García-Muñoz, Rafael A.
author_facet García-Muñoz, Rafael A.
Serrano, D.P.
Otero, D.
author_role author
author2 Serrano, D.P.
Otero, D.
author2_role author
author
dc.subject.none.fl_str_mv Medio Ambiente
23 Química
topic Medio Ambiente
23 Química
description The potential application of hybrid ZSM-5/MCM-41 materials for the catalytic degradation of high density polyethylene (HDPE) has been investigated and compared with the behavior of a standard Al-MCM-41 sample. Hybrid zeolitic-mesoporous materials were prepared from zeolite seeds obtained in different stages of ZSM-5 crystallization by variation of the synthesis time. The seeds were assembled around cetyltrimethyl ammonium bromide (CTAB) micelles to obtain hybrid materials having a combination of both zeolitic and mesostructured features. The samples so obtained have exhibited remarkable catalytic activity in the HDPE cracking despite the low temperatures (380 ºC) and catalyst loadings used (plastic/catalyst mass ratio =100), leading to polyolefin conversions higher than Al-MCM-41. The product distribution observed with the hybrid materials is closer to that typically obtained in the HDPE cracking over HZSM-5 zeolite, with a high proportion of light hydrocarbons. Moreover, the products present a high content of C2-C5 olefins, which is an interesting result regarding its possible use as raw chemicals. Increasing the zeolitic crystallinity of the hybrid materials causes an enhancement in the production of heavier products with boiling points within the gasoline range.
publishDate 2005
dc.date.none.fl_str_mv 2005
2010
2010
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10115/3845
url http://hdl.handle.net/10115/3845
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv ELSEVIER
publisher.none.fl_str_mv ELSEVIER
dc.source.none.fl_str_mv reponame:BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
instname:Universidad Rey Juan Carlos
instname_str Universidad Rey Juan Carlos
reponame_str BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
collection BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
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