Campo DC | Valor | Idioma |
dc.contributor.author | Simplício, Lílian M. T. | - |
dc.contributor.author | Rocha, Zênis N. da | - |
dc.contributor.author | Gil, Marcelo P. | - |
dc.contributor.author | Santos, João Henrique Zimnoch dos | - |
dc.contributor.author | Casagrande Junior, O. L. | - |
dc.creator | Simplício, Lílian M. T. | - |
dc.creator | Rocha, Zênis N. da | - |
dc.creator | Gil, Marcelo P. | - |
dc.creator | Santos, João Henrique Zimnoch dos | - |
dc.creator | Casagrande Junior, O. L. | - |
dc.date.accessioned | 2013-11-07T11:21:02Z | - |
dc.date.issued | 2005 | - |
dc.identifier.issn | 1381-1169 | - |
dc.identifier.uri | http://repositorio.ufba.br/ri/handle/ri/13581 | - |
dc.description | Texto completo: acesso restrito.p.96–101 | pt_BR |
dc.description.abstract | The ethylene polymerization using TpMs*TiCl3 (1) (TpMs* = HB(3-mesitylpyrazolyl)2(5-mesitylpyrazolyl)−) and TpMsTiCl3 (2) (TpMs = HB(3-mesityl-pyrazolyl)3−) was performed in toluene or hexane at 60 °C in the presence of MAO or TiBA/MAO (1:1) as cocatalysts. Higher activities were found for the polymerization reactions carried out in hexane, and using a combination of TiBA/MAO as cocatalysts. Absorciometric measurements in the UV–vis region and cyclic voltammetric have shown that such complexes when activated by MAO were not stable. Measurements carried out in the presence 1-hexene have demonstrated the necessity to add the cocatalyst in the presence of an olefin, i.e., ethylene or hexene-1 in order to stabilize the active species. Furthermore, these studies have revealed that after the activation process most of Ti remains as TiIV. | pt_BR |
dc.language.iso | en | pt_BR |
dc.rights | Acesso Aberto | pt_BR |
dc.source | http://dx.doi.org.ez10.periodicos.capes.gov.br/10.1016/j.molcata.2005.04.043 | pt_BR |
dc.subject | Titanium | pt_BR |
dc.subject | Tris(pyrazolyl)borate | pt_BR |
dc.subject | Polymerization | pt_BR |
dc.subject | Non-metallocene catalyst | pt_BR |
dc.title | Spectroscopic and voltametric studies in titanium tris(pyrazolyl)borate catalysts | pt_BR |
dc.title.alternative | Journal of Molecular Catalysis A: Chemical | pt_BR |
dc.type | Artigo de Periódico | pt_BR |
dc.identifier.number | v.238 n. 1-2 | pt_BR |
dc.embargo.liftdate | 10000-01-01 | - |
Aparece nas coleções: | Artigo Publicado em Periódico (Química)
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