FeCl_3-Al(i-Bu)_3-phen胶体催化丁二烯聚合机理

STUDIES ON THE MECHANISM OF BUTADIENE'S POLYMERIZATION IN THE PRESENE OF FeCl_3-Al(i-Bu)_3-phen

应用FT -IR谱和Uv -Vis,对加氢汽油介质中FeCl3 -Al(i-Bu) 3 - phen胶体催化剂的各组分的相互作用进行研究 ,得出在胶粒表面FeCl3 与phen作用生成Fe(phen)Cl3 ,它被Al(i -Bu) 3 还原为二价离子的表面双金属配合物 ,丁二烯在空位上配位 ,形成π -烯丙基活性种 。

FT-IR、Uv-Vis and ESR were combined so as to give information concerning the action among components of collodidial catalyst FeCl 3-Al( i -Bu) 3-phen in hydrogenated gasoline medium. It was shown by the FT-IR spectra that the reaction between FeCl 3 and phen formed Fe(phen)Cl 3 on the surface of the catalyst's colloidal parties. Fe(phen)Cl 3 was reduced to two_metal surface complex [Fe(Ⅱ)phenR 2AlR 2Cl 2]. The reaction between butadiene and vacancy formed π-allyl reactive specied and completed chain inition.