Immobilization of metallocene within silica–titania by a non-hydrolytic sol–gel method

Detalhes bibliográficos
Autor(a) principal: Fisch, Adriano G.
Data de Publicação: 2009
Outros Autores: Cardozo, Nilo S. M., Secchi, Argimiro Resende, Stedile, Fernanda C., Livotto, Paolo R., Sá, Denise S. de, Rocha, Zênis N. da, Santos, João Henrique Zimnoch dos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/5830
Resumo: Acesso restrito: Texto completo. p. 88-101
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spelling Fisch, Adriano G.Cardozo, Nilo S. M.Secchi, Argimiro ResendeStedile, Fernanda C.Livotto, Paolo R.Sá, Denise S. deRocha, Zênis N. daSantos, João Henrique Zimnoch dosFisch, Adriano G.Cardozo, Nilo S. M.Secchi, Argimiro ResendeStedile, Fernanda C.Livotto, Paolo R.Sá, Denise S. deRocha, Zênis N. daSantos, João Henrique Zimnoch dos2012-05-11T12:32:46Z20090926-860Xhttp://www.repositorio.ufba.br/ri/handle/ri/5830v. 354, n. 1-2Acesso restrito: Texto completo. p. 88-101Bis(cyclopentadienyl)zirconium dichloride was immobilized within binary oxides of SiO2–TiO2 via a non-hydrolytic sol–gel route. Different coordinatively unsaturated Ti species were identified within the oxide structure depending on the TiO2 content, which can interact with the encapsulated metallocene complex and affect its catalystic performance in ethylene polymerization. The catalysts were shown to be active in the polymerization using MAO as the cocatalyst in a low Al/Zr ratio. High molecular weight polymer was obtained, probably due to the suppression of chain termination reactions that occur by belimination. Furthermore, oxide network structures are suggested from analysis of the catalysts (via Rutherford backscattering spectrometry, infrared spectroscopy, UV–vis diffuse reflectance spectroscopy, diffuse pulse voltammetry), molecular simulation and polymerization performance.Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-05-11T12:32:46Z No. of bitstreams: 1 __ac.els-cdn.com_S092686...ba98c6b3a6ff88921a34c06e36241.pdf: 740634 bytes, checksum: d36f2a6df06f6aeb1e674635e8c66570 (MD5)Made available in DSpace on 2012-05-11T12:32:46Z (GMT). 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dc.title.pt_BR.fl_str_mv Immobilization of metallocene within silica–titania by a non-hydrolytic sol–gel method
dc.title.alternative.pt_BR.fl_str_mv Applied Catalysis A-General
title Immobilization of metallocene within silica–titania by a non-hydrolytic sol–gel method
spellingShingle Immobilization of metallocene within silica–titania by a non-hydrolytic sol–gel method
Fisch, Adriano G.
Metallocene
Sol–gel
Polymerization
Polyethylene
title_short Immobilization of metallocene within silica–titania by a non-hydrolytic sol–gel method
title_full Immobilization of metallocene within silica–titania by a non-hydrolytic sol–gel method
title_fullStr Immobilization of metallocene within silica–titania by a non-hydrolytic sol–gel method
title_full_unstemmed Immobilization of metallocene within silica–titania by a non-hydrolytic sol–gel method
title_sort Immobilization of metallocene within silica–titania by a non-hydrolytic sol–gel method
author Fisch, Adriano G.
author_facet Fisch, Adriano G.
Cardozo, Nilo S. M.
Secchi, Argimiro Resende
Stedile, Fernanda C.
Livotto, Paolo R.
Sá, Denise S. de
Rocha, Zênis N. da
Santos, João Henrique Zimnoch dos
author_role author
author2 Cardozo, Nilo S. M.
Secchi, Argimiro Resende
Stedile, Fernanda C.
Livotto, Paolo R.
Sá, Denise S. de
Rocha, Zênis N. da
Santos, João Henrique Zimnoch dos
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Fisch, Adriano G.
Cardozo, Nilo S. M.
Secchi, Argimiro Resende
Stedile, Fernanda C.
Livotto, Paolo R.
Sá, Denise S. de
Rocha, Zênis N. da
Santos, João Henrique Zimnoch dos
Fisch, Adriano G.
Cardozo, Nilo S. M.
Secchi, Argimiro Resende
Stedile, Fernanda C.
Livotto, Paolo R.
Sá, Denise S. de
Rocha, Zênis N. da
Santos, João Henrique Zimnoch dos
dc.subject.por.fl_str_mv Metallocene
Sol–gel
Polymerization
Polyethylene
topic Metallocene
Sol–gel
Polymerization
Polyethylene
description Acesso restrito: Texto completo. p. 88-101
publishDate 2009
dc.date.issued.fl_str_mv 2009
dc.date.accessioned.fl_str_mv 2012-05-11T12:32:46Z
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dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/5830
dc.identifier.issn.none.fl_str_mv 0926-860X
dc.identifier.number.pt_BR.fl_str_mv v. 354, n. 1-2
identifier_str_mv 0926-860X
v. 354, n. 1-2
url http://www.repositorio.ufba.br/ri/handle/ri/5830
dc.language.iso.fl_str_mv eng
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dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.1016/j.apcata.2008.11.013
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