화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.18, No.5, 1836-1840, September, 2012
DOI10.1016/j.jiec.2012.04.010  Export Citation
Effect of Mn doped-titania on the activity of metallocene catalyst by in situ ethylene polymerization
S.H. Abdul Kaleel1, Bijal Kottukkal Bahuleyan1, S.K. De1, Masihullah Jabarulla Khan1, Rachid Sougrat2, and Mamdouh A. Al-Harthi1, 3, †
  • 1Department of Chemical Engineering, King Fahd University of Petroleum and Minerals, 31261 Dhahran, Saudi Arabia
  • 2King Abdullah University of Science and Technology, 23955-6900 Thuwal, Saudi Arabia
  • 3Center of Research Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, 31261 Dhahran, Saudi Arabia
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Ethylene polymerization was carried out using highly active metallocene catalysts (Cp2ZrCl2 and Cp2TiCl2) in combination with methylalumoxane. Titanium(IV) oxide containing 1% Mn as dopant was used as nanofillers. The influence of filler concentration, reaction temperature and pressure on the catalytic activity and polymer properties was investigated. There was a fourfold increase in the activity of zirconocene catalyst by addition of doped-titania. The morphology indicates that the doped-titania nanoparticles have a nucleus effect on the polymerization and caused a homogeneous PE shell around them. The optimum condition for polymerization was found to be 30 ℃.
Keywords:Manganese doped titania;Metallocene;In situ polymerization;Ethylene
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