用ＮａＯＨ和ＣＯ中毒法、ＥＳＲ检测等方法研究了ＮｉＳＯ４／γ－Ａｌ２Ｏ３催化剂上乙烯、丙烯和１－丁烯齐聚反应的催化作用．结果表明：催化剂的酸性对烯烃的齐聚反应起重要作用，并且反应活性主要与Ｈｏ－３．０的酸中心有关，乙烯二聚反应是通过配位催化进行的，其活性中心是Ｎｉ＋，丙烯齐聚是通过Ｎｉ＋上的配位催化和酸催化进行的，而１－丁烯齐聚则是通过酸催化机理进行 The catalysis of oligomerization of ethylene, propylene and 1-butene over NiSO4 / γ-Al2O3 catalyst was studied by NaOH and CO poisoning and ESR detection. The results showed that the acidity of the catalyst played an important role in the oligomerization of olefins, and the reactivity was mainly related to the acid sites of Ho-3.0. The dimerization of ethylene was carried out by coordination catalyzed. The active sites were Ni +, propylene Oligomerization is catalysed by coordination and acid catalysis on Ni +, while oligomerization of 1-butene is carried out by acid catalysis