Catalytic Activity During Copolymerization of Ethylene and 1-Hexene via Mixed TiO(2)/SiO(2)-Supported MAO with rac-Et[Ind](2)ZrCl(2) Metallocene Catalyst

Activities during ethylene/1-hexene copolymerization were found to increase using the mixed titania/silica-supported MAO with rac-Et[Ind](2)ZrCl(2) metallocene catalyst. Energy Dispersive X-ray spectorcopy (EDX) indicated that the titania was apparently located on the outer surface of silica and act...

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Detalles Bibliográficos
Autores principales: Jongsomjit, Bunjerd, Ngamposri, Sutti, Praserthdam, Piyasan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2005
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6147728/
https://www.ncbi.nlm.nih.gov/pubmed/18007337
http://dx.doi.org/10.3390/10060672
Descripción
Sumario:Activities during ethylene/1-hexene copolymerization were found to increase using the mixed titania/silica-supported MAO with rac-Et[Ind](2)ZrCl(2) metallocene catalyst. Energy Dispersive X-ray spectorcopy (EDX) indicated that the titania was apparently located on the outer surface of silica and acted as a spacer to anchor MAO to the silica surface.  IR spectra revealed the Si-O-Ti stretching at 980 cm(-1) with low content of titania.  The presence of anchored titania resulted in less steric hindrance and less interaction due to supporting effect.

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