Beneficial influence of nanocarbon on the aryliminopyridylnickel chloride catalyzed ethylene polymerization |
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| Affiliation: | 1. Laboratoire de Chimie de Coordination UPR CNRS 8241, composante ENSIACET, 4 allée Emile Monso — CS 44362, 31030 Toulouse Cedex 4, France;2. Key laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;3. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;4. Department of Chemistry, University of Hull, Hull HU6 7RX, United Kingdom;1. Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;2. CAS Research/Education Center for Excellence in Molecular Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;3. College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;4. Faculty of Chemistry, University of Opole, Oleska 48, 45-052 Opole, Poland;5. State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China |
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| Abstract: | A series of 1-aryliminoethylpyridine ligands (L1―L3) was synthesized by condensation of 2-acetylpyridine with 1-aminonaphthalene, 2-aminoanthracene or 1-aminopyrene, respectively. Reaction with nickel dichloride afforded the corresponding nickel (II) chloride complexes (Ni1–Ni3). All compounds were fully characterized and the molecular structures of Ni1 and Ni3 are reported. Upon activation with methylaluminoxane (MAO), all nickel complexes exhibit high activities for ethylene polymerization, producing waxes of low molecular weight and narrow polydispersity. The presence of multi-walled carbon nanotubes (MWCNTs) or few layer graphene (FLG) in the catalytic medium can lead to an increase of productivity associated to a modification of the polymer structure. |
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