[1F08-12] Polymer, oligomer(3)

[1F11] On the origin of active and selective nanostructures of Ziegler-Natta catalyst

○Toru Wada^1,2, Alessandro Piovano^2,3, Gentoku Takasao¹, Patchanee Chammingkwan^1,2, Elena Groppo^3,2, Minoru Terano^1,2, Toshiaki Taniike^1,2 (1. Japan Advanced Institute of Science and Technology, 2. DPI, 3. University of Torino)

Although nanometer-sized and defective δ-MgCl₂ supports are indispensable for Ziegler-Natta catalysts, their formation process has not been fully elucidated. In this study, we investigated the formation of nanostructures and active surfaces of Ziegler-Natta catalysts using a multifaceted approach including chemical composition analysis and polymerization tests in addition to total X-ray scattering and various spectroscopic methods. It led us to approach the significance of each step in the preparation method, which has been empirically improved over a long history.

Keywords:Ziegler-Natta catalyst, Nanostructure, Structural analysis