Reactions of bis(cyclopentadienyl)zirconium dichloride with porous silica surface
| Autor: | Marko Peussa, Minna Kröger-Laukkanen, Lauri Niinistö, Markku Leskelä |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Zirconium
Inorganic chemistry Carbon-13 General Physics and Astronomy chemistry.chemical_element Infrared spectroscopy 02 engineering and technology Surfaces and Interfaces General Chemistry Alkylation 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films chemistry.chemical_compound Cyclopentadienyl complex chemistry Atomic layer epitaxy Chemical stability 0210 nano-technology Metallocene |
| Zdroj: | Applied Surface Science. 183:290-300 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/s0169-4332(01)00573-6 |
| Popis: | Surface reactions between bis(cyclopentadienyl)zirconium dichloride (Cp 2 ZrCl 2 ) and porous SiO 2 surface were studied by preparing series of samples by saturated gas–solid reactions in an atomic layer epitaxy (ALE) reactor. Partially dehydroxylated silica supports were obtained by preheating. Cp 2 ZrCl 2 reacted mainly with the isolated OH groups. The availability of OH groups influenced the bonding mode of the zirconocene complex which was mainly singly bonded on silica preheated at 600 °C, while preheating at 350 °C resulted in multiple bonding as revealed by NMR and elemental analyses. There was no evidence for surface alkylation or chlorination. |
| Databáze: | OpenAIRE |
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