Catalytic activity during copolymerization of ethylene and 1-hexene via mixed TiO2/SiO2-supported MAO with rac-Et[Ind]2ZrCl2 metallocene catalyst

Molecules. 2005 Jul 14;10(6):672-8. doi: 10.3390/10060672.

Abstract

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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alkenes / chemistry*
  • Catalysis
  • Ethylenes / chemistry*
  • Organometallic Compounds
  • Polymers / chemical synthesis*
  • Silicon Dioxide
  • Spectroscopy, Fourier Transform Infrared
  • Spectrum Analysis
  • Titanium
  • X-Rays

Substances

  • Alkenes
  • Ethylenes
  • Organometallic Compounds
  • Polymers
  • metallocene
  • titanium dioxide
  • Silicon Dioxide
  • ethylene
  • 1-hexene
  • Titanium