Study of the catalytic species metallocene/MAO and metallocene/TMA by cyclic voltammetry

Detalhes bibliográficos
Autor(a) principal: Costa, Fábio Gomes
Data de Publicação: 2004
Outros Autores: Simplício, Lílian M. T., Rocha, Zênis N. da, Brandão, Soraia Teixeira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/7742
Resumo: Texto completo: acesso restrito. p. 67-72.
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spelling Costa, Fábio GomesSimplício, Lílian M. T.Rocha, Zênis N. daBrandão, Soraia TeixeiraCosta, Fábio GomesSimplício, Lílian M. T.Rocha, Zênis N. daBrandão, Soraia Teixeira2013-01-04T12:30:26Z20041381-1169http://www.repositorio.ufba.br/ri/handle/ri/7742v. 211, n. 1-2Texto completo: acesso restrito. p. 67-72.In this paper, an electrochemical study of the metallocene/methylaluminoxane (MAO) and metallocene/trimethylaluminium (TMA) species is presented. The metallocenes used were [(CH3)2Si(Cp)2ZrCl2] and [(Cp)2ZrCl2]. The evaluation of the Metallocene/MAO and Metallocene/TMA systems was based on the analysis of the redox potentials of the solutions with different Al/Zr molar ratios using acetonitrile as solvent. The results obtained for Al/Zr ratios lower than 30, suggested that in presence of TMA or MAO, the formed monomethylated species are [(L)ZrIV(CH3)Cl], L = cyclopentadienyl (Cp)2 or (CH3)2Si(Cp)2. For Al/Zr molar ratios higher than 30, the results obtained in TMA presence are in agreement with the formation of the species [(L)ZrIV(CH3)( -CH3)Al(CH3)2]+, while in MAO presence the ionic pair,[(L)ZrIVCH3]+[MAOCl]−, is formed. There’s a general agreement that these are active species in olefin polymerization.Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2013-01-04T12:30:26Z No. of bitstreams: 1 1-s2.0-S1381116903007258-main.pdf: 172857 bytes, checksum: 7000ecc3e417aae31ebfd9bf5361694a (MD5)Made available in DSpace on 2013-01-04T12:30:26Z (GMT). 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dc.title.pt_BR.fl_str_mv Study of the catalytic species metallocene/MAO and metallocene/TMA by cyclic voltammetry
dc.title.alternative.pt_BR.fl_str_mv Journal of Molecular Catalysis A: Chemical
title Study of the catalytic species metallocene/MAO and metallocene/TMA by cyclic voltammetry
spellingShingle Study of the catalytic species metallocene/MAO and metallocene/TMA by cyclic voltammetry
Costa, Fábio Gomes
Zirconocenes
Polymerization
Ethylene
Cyclic voltammetry
title_short Study of the catalytic species metallocene/MAO and metallocene/TMA by cyclic voltammetry
title_full Study of the catalytic species metallocene/MAO and metallocene/TMA by cyclic voltammetry
title_fullStr Study of the catalytic species metallocene/MAO and metallocene/TMA by cyclic voltammetry
title_full_unstemmed Study of the catalytic species metallocene/MAO and metallocene/TMA by cyclic voltammetry
title_sort Study of the catalytic species metallocene/MAO and metallocene/TMA by cyclic voltammetry
author Costa, Fábio Gomes
author_facet Costa, Fábio Gomes
Simplício, Lílian M. T.
Rocha, Zênis N. da
Brandão, Soraia Teixeira
author_role author
author2 Simplício, Lílian M. T.
Rocha, Zênis N. da
Brandão, Soraia Teixeira
author2_role author
author
author
dc.contributor.author.fl_str_mv Costa, Fábio Gomes
Simplício, Lílian M. T.
Rocha, Zênis N. da
Brandão, Soraia Teixeira
Costa, Fábio Gomes
Simplício, Lílian M. T.
Rocha, Zênis N. da
Brandão, Soraia Teixeira
dc.subject.por.fl_str_mv Zirconocenes
Polymerization
Ethylene
Cyclic voltammetry
topic Zirconocenes
Polymerization
Ethylene
Cyclic voltammetry
description Texto completo: acesso restrito. p. 67-72.
publishDate 2004
dc.date.issued.fl_str_mv 2004
dc.date.accessioned.fl_str_mv 2013-01-04T12:30:26Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/7742
dc.identifier.issn.none.fl_str_mv 1381-1169
dc.identifier.number.pt_BR.fl_str_mv v. 211, n. 1-2
identifier_str_mv 1381-1169
v. 211, n. 1-2
url http://www.repositorio.ufba.br/ri/handle/ri/7742
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elservier
publisher.none.fl_str_mv Elservier
dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.1016/j.molcata.2003.10.027
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
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instname_str Universidade Federal da Bahia (UFBA)
instacron_str UFBA
institution UFBA
reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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