Characterization of supported bimetallic catalysts for ethylene polymerization: The effect of external Lewis bases
β Scribed by Lia Barazzoni; Francesco Menconi; Cesare Ferrero; Angelo Moalli; Francesco Masi; Angelina Altomare; Roberto Solaro; Francesco Ciardelli
- Publisher
- Elsevier Science
- Year
- 1993
- Weight
- 693 KB
- Volume
- 82
- Category
- Article
- ISSN
- 0304-5102
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The effect of a basic layer (Si02-R3Al intermediate) in the one-phase silica supported titanium-based catalyst was investigated using the simple model catalyst systems obtained by reacting the activated silica gel consecutively with R3Al and TiC14. Mode of the interaction of SiO, with R3Al-resulting
X-ray photoelectron spectroscopy (XPS) has been applied to the study of a series of metaliocene catalysts, containing Zr, Ti or Hf. for the polymerization of ethylene. Surface atomic compositions, binding energies and valence band (VB) spectra have been measured. Surface compositions were found to b