【摘要】 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更多还原

【Abstract】 The methods of POiSOning with NaOH and carbon monoxide, andESR were used to Study the catalytic behavior of NiSO4 /γ-Al2O3 for oligomerization of lower alkenes, ethene, propene and 1-botene. The comparison of NiSO4/γ-Al2O3 with the catalysts derived from differentsulfates and suPPorts was also made. The results show that the acidityof the catalyst plays an imPOrtant role in alkene oligdmerization andthe activity is related to the acid sites of Strength of H0≤- 3.0. It’ issuggested that the dimerization of ethene over the catalyst is conductedby coordination catalysis, the active sites consiSt of Ni+ and the acidsites; the oligomerization of propene proceeds via both coordination catalysis and acid catalysisl in 1-butene oligomerization, the reaction proceeds mainly via acid catalysis.更多还原