铁系胶体催化剂各组分相互作用的研究

已知催化剂 FeCl3 Al(i Bu)3 Phen(邻菲罗啉 )在加氢汽油介质中对丁二烯聚合有较高的活 性 1－ 2]，作者曾研究了 FeCl3 Al(i Bu)3 Phen体系催化剂的相态，证明该体系为胶体催化剂 3]. 　　Bushick4]较早地使用电导率研究烷基铝氯化钛体系离子特性与聚合速率的关系 .至今尚未见从胶体角度研究本体系各组分之间相互作用的报导 . 　　本文是把电导率作为胶体的电学性质之一进行研究的 .主要研究了 FeCl3 Al(i Bu)3 Phen胶体催化剂体系单、多组分溶液的电导率与浓度的关系，结合相应的紫外可见光谱分析结果，…

Studies on the Interaction of the Various Components in Colloidal Catalysts of Iron System

The relationship of the electric conductivity of single and multi-component of colloidal catalyst FeCl3-Al(i-Bu)3-Phen with their concentration was studied in hydrogenated gasoline solvent at 25℃ ,meanwhile,the UV-Vis spectra of the corresponding component of the catalyst were detected.The experimental results showed that Al(i-Bu)3 existed in associated state and dissociated into ion couple.The reaction between Al(i-Bu)3 and FeCl3 was the main reaction to form colloidal core.The Fe(III) on the surface of the colloidal particles was reduced to lower valence by Al(i-Bu)3.The stable complex formed by the reaction between Phen and Fe(II) could prevent Fe(II) from being reduced to lower valence.The colloidal particles were comparatively stable by means of the electric double layer yielded by a proper excess of Al(i-Bu)3.The stable colloidal particles could be formed in the optimal ratio of the catalyst components.