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通过对Fe_2(SO_4)_3/γ-Al_2O_3催化剂制备方法的研究和对丙烯齐聚反应催化性能的考察,发现该催化剂在温和的反应条件下对丙烯齐聚反应具有高的活性和三聚、四聚选择性.通过氨不可逆吸附法测定催化剂的酸量及其与催化活性的关联,以及采用NaOH对催化剂中毒的方法考察催化剂性能的变化.认为在Fe_2(SO_4)_3/γ-Al_2O_3上丙烯齐聚反应是以酸催化机理进行的.
The preparation of Fe_2 (SO_4) _3 / γ-Al_2O_3 catalyst and the investigation of its catalytic performance for oligomerization of propylene have shown that the catalyst has high activity and trimerisation in the oligomerization of propylene under mild reaction conditions. Poly-selectivity.The acidity of the catalyst was determined by ammonia irreversible adsorption method and its correlation with the catalytic activity, and the change of the catalyst performance was investigated by the method of NaOH poisoning on the catalyst.It is considered that the propylene content in Fe_2 (SO_4) _3 / γ-Al_2O_3 Polymerization is catalyzed by acid.