【摘要】 在低压下用两种均相络合催化剂体系进行了乙烯齐聚制备直链低碳α-烯烃的研究,二元体系催化剂由ZrCl₄和（CH₅）₃Al₂Cl₃组成,三元体系催化剂由上述二元体系及少量n-C₄H₉ONa组成。从反应温度、Al/Zr和n-C₄H₉ONa/Zr对齐聚反应和产物分布影响看,三元体系催化剂的性能大大优于二元体系催化剂,其最高催化活性在90℃、反应2小时可达到1293.5g/g Zr·h,齐聚产物中C₄—C₁0的选择性为80%,其线性率为84%,ZrCl₄,n-C₄H₉ONa在环己烷中的红外光谱指出,在三元体系中存在着（n-C₄H₉0）_nZrCl_4—n（n=1—4）结构。更多还原

【Abstract】 The preparation of C₄-C₁₀ linear a-olefins by catalytic homogeneous oligomerization of ethylene under lower pressure was studied. A binary system catalyst composed of ZrCl₄ and （C₂H₅）₃Al₂Cl₃ and a ternary system catalyst with the addition of small amount of third component n-C₄H₉ONa were used. The effect of reaction temperature, molar ratio of Al/Zr and n-C_H9ONa/Zr on the oligomerization activity and product distribution was preliminarily investigated. The experimental results show that the ternary system catalyst is more active, and a high catalytic activity of 1293.5 g/g Zr·h is attained for a two-hour run at 90℃,and a selectivity for C₄-C₁0 olefins is 80% with a linearity of 84%. The IR spectrum of ZrCl4 and n-C₄H₉ONa in cyclohexane indicates that （n-C₄H₉O）_nZrCl_4-n（n = 1-4） exists in the ternary system catalyst.更多还原