A robust immobilization strategy in the nano-dispersed Ziegler–Natta catalyst: non-covalent O–Ti coordination
2020
Li, Wei | Wang, Ning | Cao, Yu | Tang, Xin | Dong, Chuanding
An immobilization strategy of catalytic TiCl₄ on polyhedral oligomeric silsesquioxanes (POSSs) is developed, which features both robustness and equivalence of active sites in ethylene polymerization thanks to the non-covalent O–Ti coordination. The symmetric structure of POSS homogenizes the coordination of the TiCl₄ molecules, enabling considerable activity in the synthesis of narrowly distributed polyethylene.
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