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Molecules 2005, 10(6), 672-678; doi:10.3390/10060672
Article

Catalytic Activity During Copolymerization of Ethylene and 1-Hexene via Mixed TiO2/SiO2-Supported MAO with rac-Et[Ind]2ZrCl2 Metallocene Catalyst

* ,  and
Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Thailand
* Author to whom correspondence should be addressed.
Received: 7 October 2004 / Accepted: 16 November 2004 / Published: 14 July 2005
(This article belongs to the Special Issue Synthesis and Chemistry of Chiral Metallocenes)
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Abstract

Activities during ethylene/1-hexene copolymerization were found to increaseusing the mixed titania/silica-supported MAO with rac-Et[Ind]2ZrCl2 metallocenecatalyst. Energy Dispersive X-ray spectorcopy (EDX) indicated that the titania wasapparently located on the outer surface of silica and acted as a spacer to anchor MAO tothe silica surface. IR spectra revealed the Si-O-Ti stretching at 980 cm-1 with low contentof titania. The presence of anchored titania resulted in less steric hindrance and lessinteraction due to supporting effect.
Keywords: Metallocene catalyst; titania; silica; supports; copolymerization Metallocene catalyst; titania; silica; supports; copolymerization
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Jongsomjit, B.; Ngamposri, S.; Praserthdam, P. Catalytic Activity During Copolymerization of Ethylene and 1-Hexene via Mixed TiO2/SiO2-Supported MAO with rac-Et[Ind]2ZrCl2 Metallocene Catalyst. Molecules 2005, 10, 672-678.

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