OLIGOMERIZATION OF ETHENE OVER SEVERAL CATALYST BEDS CONSISTING OF BOTH Ni/SiO₂·Al₂O₃ AND BPO₄

抄録

The oligomerization of ethene was investigated over several catalysts involving Ni/SiO₂·Al₂O₃(Ni/SA) and BPO₄. The oligomerization of ethene activity of SA or BPO₄ was very low, while that of Ni/SA was very high. Butene was predominantly observed over Ni/SA, while no product was observed over BPO₄. Combined use of Ni/SA and BPO₄ was more effective for promoting the ethene oligomerization than Ni/SA, especially for increasing C₆ fraction. 1-Butene as C₄ products in the ethene oligomerization was mainly obtained in the presence of Ni/SA alone, while an equilibrium mixture of n-butene was formed using Ni/SA and BPO₄ together, suggesting that the isomerization of n-butene formed from ethene occurs over BPO₄.