【Abstract】 The method of preparation of AlCl 3 catalyst immobilized on γ Al 2O 3 was investigated. AlCl 3 generated by reacting CCl 4 with pure γ Al 2O 3 at 500℃ and γ Al 2O 3 with bimodal meso and macro pore structure were used as immobilizing agent and support, respectively, to prepare the catalyst. The effect of various factors of immobilization conditions on catalytic property in isobutene polymerization was examined. The catalyst, in which the mass fraction of AlCl x is about 7.5 and x =2.2, showed a high activity, selectivity and stability, and no considerable differences in the catalytic behavior were found in the following ranges: reaction temperature, 300~400 ℃; reaction time, 0.5~4.0 h; flow of CCl 4 of adding, 1.15~2.01 mL/h for 15 mL γ Al 2O 3. Additionally, it was shown that the catalytic property in isobutene polymerization is not only dependent on the nature of support, but also on its geometric structure. Compared with the catalysts having micro porous and meso porous structure which showed a poor stability, the catalyst with meso and macro pore bimodal structure exhibited a very high stability, and was supposed to be most suitable one, and it was ascribed to that in the case of the latter, harmful influence of intraparticle diffusion caused by "pore clogging" of large product molecules in the pore channel effectively reduced.更多还原