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

Sang Yun Lee; Young Soo Ko

doi:10.1166/jnn.2018.14917

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

J Nanosci Nanotechnol. 2018 Feb 1;18(2):1435-1438. doi: 10.1166/jnn.2018.14917.

Authors

Sang Yun Lee¹, Young Soo Ko¹

Affiliation

¹ Department of Chemical Engineering, Kongju National University Budaedong, Cheonan, Chungnam, 31080, Korea.

PMID: 29448607
DOI: 10.1166/jnn.2018.14917

Abstract

The results on the In-Situ synthesis of Ni complex on amine-grafted SiO2 and its ethylene polymerization were explained. SiO2/2NS/(DME)NiBr2 and SiO2/3NS/(DME)NiBr2(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 SiO2/2NS/(DME)NiBr2 exhibited higher activity than SiO2/3NS/(DME)NiBr2. The PDI values of SiO2/2NS/(DME)NiBr2 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 NiBr2 was complexed with the amine group of 2NS based on the results of FT-IR and ethylene polymerization.