Heterogeneous SHOP-Type Ni Catalyzed Ethylene Polymerization
摘要
Industrial polyolefin processes are mainly based on heterogeneous catalytic systems. Shell higher olefin process (SHOP) type nickel catalysts represent one of the late-transition metal homogeneous catalysts for the industrial preparation of linear low-carbon α-olefins from ethylene. This work focuses on the heterogenization of homogeneous SHOP catalysts using hydrogen-bonding interactions or ionic anchoring strategies, which enhances catalytic activity and polymer molecular weight while maintaining narrow polydispersities. Three sodium-sulfonate functionalized SHOP nickel complexes were prepared, and their superior performance in ethylene polymerization compared to homogeneous catalysts was demonstrated, underscoring the potential of these heterogeneous catalysts in efficient production of highly crystalline linear α-olefinic solid polymers.
Graphical Abstract