Effect of SiO2, CaO, Mixed Lewis Acids, Mixed Co-Catalysts and Poisons on Ziegler-Natta Catalysts

Homo- and co-polymerization of α-olefins were investigated based on catalytic activity and polymer properties with different important effects such as effect of MgCl₂-SiO₂ bi-supported catalysts, effect of addition of CaO, effect of mixed Lewis acid, effect of mixed co‐catalyst and effect of poisoning materials and impurity gas.