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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
6
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pubmed:dateCreated |
2007-11-16
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pubmed:abstractText |
Activities during ethylene/1-hexene copolymerization were found to increase using the mixed titania/silica-supported MAO with rac-Et[Ind]2ZrCl2 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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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
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pubmed:status |
MEDLINE
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pubmed:issn |
1420-3049
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pubmed:author |
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pubmed:issnType |
Electronic
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pubmed:volume |
10
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
672-8
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pubmed:dateRevised |
2009-10-27
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pubmed:meshHeading |
pubmed-meshheading:18007337-Alkenes,
pubmed-meshheading:18007337-Catalysis,
pubmed-meshheading:18007337-Ethylenes,
pubmed-meshheading:18007337-Organometallic Compounds,
pubmed-meshheading:18007337-Polymers,
pubmed-meshheading:18007337-Silicon Dioxide,
pubmed-meshheading:18007337-Spectroscopy, Fourier Transform Infrared,
pubmed-meshheading:18007337-Spectrum Analysis,
pubmed-meshheading:18007337-Titanium,
pubmed-meshheading:18007337-X-Rays
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pubmed:year |
2005
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pubmed:articleTitle |
Catalytic activity during copolymerization of ethylene and 1-hexene via mixed TiO2/SiO2-supported MAO with rac-Et[Ind]2ZrCl2 metallocene catalyst.
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pubmed:affiliation |
Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand. bunjerd.j@chula.ac.th
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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