Ethylene oligomerization using quinoline-imine nickel(II) complex immobilized in fluorotetrasilicic mica interlayer by one-pot preparation method
| Autor: | Hideki Kurokawa, Sayoko Nagashima, Hideki Yamanaka, Hiroshi Miura, Tsutomu Sakuragi, Kazuhiro Yamamoto, Masa–aki Ohshima |
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| Rok vydání: | 2016 |
| Předmět: |
Ethylene
010405 organic chemistry Chemistry Process Chemistry and Technology Induction period Quinoline Imine chemistry.chemical_element 010402 general chemistry 01 natural sciences Catalysis 0104 chemical sciences chemistry.chemical_compound Nickel Aniline Polymer chemistry Mica Physical and Theoretical Chemistry |
| Zdroj: | Journal of Molecular Catalysis A: Chemical. 425:275-282 |
| ISSN: | 1381-1169 |
| DOI: | 10.1016/j.molcata.2016.10.005 |
| Popis: | Quinoline-imine nickel (II) complexes were immobilized in fluorotetrasilicic mica interlayers by a one-pot synthesis through the reaction of a nickel ion-exchanged fluorotetrasilicic mica (Ni 2+ -mica) with the corresponding quinoline and aniline derivatives. After activation of the prepared precatalyst by a co-catalyst (Et 3 Al, i Bu 3 Al, or Et 2 AlCl), it showed a high catalytic activity for the oligomerization of ethylene with the formation of oligomers having carbon numbers 4–20. The maximum activity (168 g-product g-cat −1 h −1 ) was obtained by the oligomerization at 40 °C and 1.0 MPa in the presence of Et 3 Al using the precatalyst prepared from Ni 2+ -mica, 2-acetylquinoline, and 2, 6-dimethylaniline. In all the oligomerization runs, a long induction period was observed, and the induction time significantly depended on the co-catalyst. This induction period might be caused by the characteristic structure of the precatalysts. The FT-IR and XRD spectra of the precatalysts indicated the formation of the intended nickel complexes in the mica interlayer. |
| Databáze: | OpenAIRE |
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