【摘要】 NiSO₄/γ-Al₂O₃的酸性强烈影响其催化丙烯齐聚的活性。CO中毒实验和ESR表征证明,在反应过程中有Ni⁺产生,并成为反应的活性中心。推测NiSO₄/γ-Al₂O₃上丙烯齐聚反应除通过酸中心上酸催化进行外,还通过Ni⁺上配位催化进行。更多还原

【Abstract】 The catalytic activity of NiSO₄/γ-Al₂O₃ in propene oligomerization is greatly influenced by the acidity of the catalyst used. It was found that the acid sites related to propene oligomerization are only those of H_o≤-3.0. The generation of Ni⁺ and its role as an active site in the oligomerization were demonstrated by the electronspin resonance method （ESR） and CO poisoning. The oligomerization is believed to be proceeded by coordination catalysis over Ni⁺ as well as acid catalysis over the acid sites of the supported catalyst.更多还原