https://repositorio.ufba.br/handle/ri/7742
Campo DC | Valor | Idioma |
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dc.contributor.author | Costa, Fábio Gomes | - |
dc.contributor.author | Simplício, Lílian M. T. | - |
dc.contributor.author | Rocha, Zênis N. da | - |
dc.contributor.author | Brandão, Soraia Teixeira | - |
dc.creator | Costa, Fábio Gomes | - |
dc.creator | Simplício, Lílian M. T. | - |
dc.creator | Rocha, Zênis N. da | - |
dc.creator | Brandão, Soraia Teixeira | - |
dc.date.accessioned | 2013-01-04T12:30:26Z | - |
dc.date.issued | 2004 | - |
dc.identifier.issn | 1381-1169 | - |
dc.identifier.uri | http://www.repositorio.ufba.br/ri/handle/ri/7742 | - |
dc.description | Texto completo: acesso restrito. p. 67-72. | pt_BR |
dc.description.abstract | 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. | pt_BR |
dc.language.iso | en | pt_BR |
dc.publisher | Elservier | pt_BR |
dc.source | http://dx.doi.org/10.1016/j.molcata.2003.10.027 | pt_BR |
dc.subject | Zirconocenes | pt_BR |
dc.subject | Polymerization | pt_BR |
dc.subject | Ethylene | pt_BR |
dc.subject | Cyclic voltammetry | pt_BR |
dc.title | Study of the catalytic species metallocene/MAO and metallocene/TMA by cyclic voltammetry | pt_BR |
dc.title.alternative | Journal of Molecular Catalysis A: Chemical | pt_BR |
dc.type | Artigo de Periódico | pt_BR |
dc.identifier.number | v. 211, n. 1-2 | pt_BR |
dc.embargo.liftdate | 10000-01-01 | - |
Aparece nas coleções: | Artigo Publicado em Periódico (Química) |
Arquivo | Descrição | Tamanho | Formato | |
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1-s2.0-S1381116903007258-main.pdf Restricted Access | 168,81 kB | Adobe PDF | Visualizar/Abrir Solicitar uma cópia |
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