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MgCl~2~‐supported Ziegler‐Natta catalysts: Synthesis and X‐ray diffraction characterization of some MgCl~2~‐Lewis base adducts by Noto, Vito Di ;Marigo, Antonio ;Viviani, Maria ;Marega, Carla ;Bresadola, Silvano ;Zannetti, Roberto is a Chemistry article available to read on EtoBox.
What is MgCl~2~‐supported Ziegler‐Natta catalysts: Synthesis and X‐ray diffraction characterization of some MgCl~2~‐Lewis base adducts about?
## Abstract Some adducts of MgCl~2~ and Lewis bases (or donors) B were examined, having a composition MgCl~2~ · 2B, where B = Ethyl (Et) formate, Et acetate, Et propionate, Et benzoate, Et crotonate, acetone, 2‐butanone and EtOH. The crystallographic investigation of these adducts, carried out on polycrystalline powders and some single crystals, shows some remarkable structural analogies for all examined donors. In particular, the X‐ray diffraction patterns of the adducts indicate the total absence of the close‐packing of chlorine which characterizes α‐MgCl~2~ and the presence of covalent Cl‐Mg‐Cl chains. The obtained data are correlated with the preparation of active supports for Ziegler‐Natta olefin polymerization: after total elimination of B, a disordered structure of MgCl~2~ is obtained, which is coincident with the reported one for the mechanically activated (by ball‐milling) MgCl~2~ and previously described both in the scientific and in the patent literature.
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- Author
- Noto, Vito Di ;Marigo, Antonio ;Viviani, Maria ;Marega, Carla ;Bresadola, Silvano ;Zannetti, Roberto
- Publisher
- Wiley (John Wiley & Sons); Wiley (ISSN 0025-116X)
- Published
- 1992
- Language
- EN
- Field
- Chemistry (Physical Sciences)