Surface science studies of model Ziegler-Natta polymerization catalysts

Seong Han Kim, Enrico Magni, Gabor A. Somorjai

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Thin films of titanium chloride, with and without MgCl2, have been produced, characterized, and used for in situ propylene polymerization with AlEt3. The oxidation states of Ti in the film are mainly 4+, 3+ and 2+, and their distribution varies with deposition method. Temperature programmed desorption (TPD) of mesitylene and tetramethyl-cyclopentadiene shows that the surface of titanium chloride film without MgCl2 has more homogeneous adsorption site distribution. Both films produce highly isotactic polypropylene. The polypropylene film grown on the titanium chloride film without MgCl2 has a rough surface, compared to that with MgCl2.

Original languageEnglish (US)
Pages (from-to)3861-3866
Number of pages6
JournalStudies in Surface Science and Catalysis
Volume130 D
StatePublished - 2000

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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