期刊 In-Situ Immobilization of Ni Complex on Amine-Grafted SiO2 for Ethylene Polymerization  

作  者:Lee, Sang Yun; Ko, Young Soo

机构地区:Department of Chemical Engineering, Kongju National University Budaedong, Cheonan, Chungnam, 31080, Korea

出  处:Journal of Nanoscience and Nanotechnology2018,18(2),1435-1438,4

语  种:外文

出 版 国:美国

摘  要:The results on the In-Situ synthesis of Ni complex on amine-grafted SiO<sub>2</sub> and its ethylene polymerization were explained. SiO<sub>2</sub>/2NS/(DME)NiBr<sub>2</sub> and SiO<sub>2</sub>/3NS/(DME)NiBr<sub>2</sub>(Ni(II) bromide ethylene glycol dimethyl ether) catalysts were active for ethylene polymerization. The highest activity was shown at the polymerization temperature of 25 ��C, and SiO<sub>2</sub>/2NS/(DME)NiBr<sub>2</sub> exhibited higher activity than SiO<sub>2</sub>/3NS/(DME)NiBr<sub>2</sub>. The PDI values of SiO<sub>2</sub>/2NS/(DME)NiBr<sub>2</sub> were in the range of 8~18. The aminosilane compounds and Ni were evenly grafted and distributed in the silica. It was proposed that DME ligand was mostly removed during the supporting process, and only NiBr<sub>2</sub> was complexed with the amine group of 2NS based on the results of FT-IR and ethylene polymerization.

关 键 词:Amine-Functionalized SiO2  Aminosilane  Nickel Catalyst  Olefin Polymerization 

 

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