MgCl2·4((CH3)2CHCH2OH): A new molecular adduct for the preparation of TiClx/MgCl2 catalyst for olefin polymerization

• Published in: Dalton transactions : an international journal of inorganic chemistry 2012, Vol.41 (37), p.11311-11318
• Main Authors: Thushara, K. S, Gnanakumar, Edwin S, Mathew, Renny, Ajithkumar, T. G, Rajamohanan, P. R, Bhaduri, Sumit, Gopinath, Chinnakonda S
• Format: Article
• Language: English
• ISSN: 1477-9226; 1477-9234
• DOI: 10.1039/c2dt31211e

A new molecular adduct of MgCl 2 with isobutanol, namely MgCl 2 ·4((CH 3 ) 2 CHCH 2 OH) (MgiBOH), has been prepared as a precursor to the supporting material for an olefin polymerization catalyst. The MgiBOH adduct and final titanated Ziegler-Natta catalysts have been thoroughly characterized by powder XRD, thermal analysis, Raman spectroscopy and solid-state NMR for structural and spectroscopy aspects. A peak observed at 712 cm 1 in the Raman spectra of MgiBOH indicates the characteristic Mg-O 6 breathing mode and the formation of the adduct. The diffraction feature at 2 = 7.8° ( d = 11.223 Å) in the XRD confirms the adduct formation and the layered structure. The aim of the present article is to study how the insertion of a bulky isobutanol moiety affects the structural and electronic properties of the MgCl 2 ·isobutanol molecular adduct. Indeed, the focus of the present study is to explore how the presence of isobutanol, in the initial molecular adduct, influences the final Z-N catalyst properties and its activity. MgCl 2 ·4((CH 3 ) 2 CHCH 2 OH) has been synthesized, employed to prepare TiCl x /MgCl 2 and the product has been evaluated for catalytic olefin polymerization activity.